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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

12-inch Sealed Car Sub Box Made with 3/4" MDF and lined w/ Polyfil (1.0 cu ft airspace 12SQTC)

In Stock
|

List price $59.99

You Save: $28.00 (46.67%)

$31.99

with warranty

Order within 41 hrs 43 mins to ship 4/27

Arrives by Thursday, Apr. 30 to zip 07095

60-Day Money-Back

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Warranty assistance for a year

In Stock

Arrives by Thu, Apr. 30

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Bundled Savings with this Product

FREE Sealed Enclosure with Your Image Dynamics Sub Purchase!

Add a Belva MDFS12 Sealed Subwoofer Enclosure to your Image Dynamics Subwoofer purchase and save $32. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

FREE Sealed Enclosure with Your Image Dynamics Sub Purchase!

Add a Belva MDFS12 Sealed Subwoofer Enclosure to your Image Dynamics Subwoofer purchase and save $32. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

FREE Sealed Enclosure with Your Image Dynamics Sub Purchase!

Add a Belva MDFS12 Sealed Subwoofer Enclosure to your Image Dynamics Subwoofer purchase and save $32. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

FREE Sealed Enclosure with Your Image Dynamics Sub Purchase!

Add a Belva MDFS12 Sealed Subwoofer Enclosure to your Image Dynamics Subwoofer purchase and save $32. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

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Special Price $0 ($31.99 if purchased separately)

Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

FREE Sealed Enclosure with Your Image Dynamics Sub Purchase!

Add a Belva MDFS12 Sealed Subwoofer Enclosure to your Image Dynamics Subwoofer purchase and save $32. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

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Special Price $0 ($31.99 if purchased separately)

Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

FREE Sealed Enclosure with Your Image Dynamics Sub Purchase!

Add a Belva MDFS12 Sealed Subwoofer Enclosure to your Image Dynamics Subwoofer purchase and save $32. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

50% Off a Sealed Enclosure with Your Kicker Sub Purchase!

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

Get a FREE Sealed Enclosure with Your Kicker Sub Purchase!

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

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Special Price $0 ($31.99 if purchased separately)

Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

Get a FREE Sealed Enclosure with Your Kicker Sub Purchase!

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

25% Off on the Subwoofer Box!

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Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

(Offer 1 of 42)

Combined Total Price

$159.99

You Save $31.99

General Features:

  • Single Sealed 12" Enclosure
  • Internal box volume: 1.0 cubic ft
  • High Quality 3/4" MDF Construction
  • Durable black carpeting
  • Pre-lined with Poly-Fil
  • Seams are fully caulked for better efficiency
  • Gold post terminals for clean and easy wiring access
  • Box Dimensions: 14-1/4"L x 14-1/4"D x 14-1/4"H
  • 30 Day return policy

Speaker Box / Enclosure Specifications

Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
Subwoofer Cutout Shape
This is the shape of the enclosures cutout hole and defines the style of subwoofer that can be installed.
Round / Circle
Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Sealed
Number of Subs/Speakers
This value represents the number of speakers or subwoofers that the enclosure accommodates.
1
Box Style/Shape
The box style or shape refers to the actual shape of the box. Square and rectangular boxes are straight-edged boxes on all sides, whereas hatchback and truck style enclosures feature an angled front or back design that allows for installation in places short on depth such as single cab pickup trucks. You can also use such enclosures in hatchback cars or other vehicles where space is a premium. Tube and cylinder shaped boxes were made popular by Bazooka and are a great option for those looking for a nice amount of bass without sacrificing lots of space. They may even fit in locations that slim truck boxes cannot fit in. If the enclosure is vehicle specific, we encourage you to read the product description to find out which vehicles the enclosure is made for.
Square/Rectangle
Cutout Diameter or Length
The actual diameter of the hole in the subwoofer box. Length is the measured length per side of a square subwoofer or speaker opening.
11"
Maximum Speaker Depth
Your subwoofer or speaker must not exceed this dimension in order to properly mount in this enclosure.
13-1/4"
Total Box Volume
The internal volume measurement in cubic feet before subwoofer magnet displacement.
1.0 cubic feet
Box Volume (Each Chamber)
This is the total air space inside each chamber of the empty subwoofer enclosure. By matching this value with the recommended air space of the subwoofer, you will be able to know if the subwoofer will match this box.
1.0 cubic feet
Height
The height of the item, measured from top to bottom, in inches.
14-1/4"
Width
The width of the item from left to right (side-to-side) measured in inches.
14-1/4"
Depth
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
14-1/4"
Wood Thickness
The thickness of the wood the enclosure is made of, measured in inches.
3/4"
Number of Terminals
The number of terminals the enclosure has. Each terminal represents 1 positive and 1 negative.
1
Terminal Type
Spring clip terminals work best with bare wire connections with small-gauge speaker wire, or pin-type connectors.

Binding post terminals are a sturdier, more versatile type of speaker terminal. Because binding post terminals are are threaded, you can tighten them down against the wire or connector for a tight, clean connection. The most popular style of binding post terminals is known as a "5-way binding post". This type can accept bare wire, or any of the common speaker wire connectors. Binding posts with the option to be used with banana clips are even more versatile

Spring posts are a hybrid of the two. Instead of using a thread and "screwing" them tight, they use a spring to allow the wire to fit and tighten against the terminal.

Binding posts (banana clip ready)
Box Exterior Color
The color of the enclosure's exterior/outer finish.
Black
Box Finish
The material used on the outside of the box. Most boxes are carpeted to prevent exterior scratches; however vinyl is popular as it can often be color-matched to a near exact look of your leather factory interior.
Carpet
Tuning Frequency
Compatible Vehicle Make and Model
The model of vehicle that this vehicle specific product is designed for. Please keep in mind that engine variations can affect the compatibility of the products.

Port Details

Tuning Frequency

Promotions

Promotions
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
80%
4 Star
19%
3 Star
2%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.9
Features
4.6
Design
4.7
Usability
4.8
Mike

Minneapolis, MN

Overall
Durability
Value
Features
Design
Usability
Great box for a great price

October 7, 2013

Very nice box. Extra bonus with the poly fill. Deep black carpet color looks great. 12" sub dropped in perfectly without any sanding. Can't beat the price with free shipping!

35 of 63 found this helpful

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Kevin

Rockford, IL

Overall
Durability
Value
Features
Design
Usability
Pretty good for money but...

March 27, 2014

Overall, this enclosure is fantastic and it is a great value if you didn't want to build a custom enclosure like myself, but there is one thing that is wrong in the description... on both sides of the box, the left and right when looking from the front, are recessed 3/4 of an inch, leaving a lip on both sides that is 3/4 of an inch tall, so it changes the internal volume of the box by a small amount, around 0.14 cubic feet. Not a big difference but for some that is a deal breaker. it does come with a small amount of polyfil, enough to cover all 4 solid sides. Otherwise, great buy! Still worth 5 stars in my opinion i just think they need to be more specific with the outside dimensions.

Side note: the lip on each side is a nice addition and it adds to the visual aesthetics of the box and also serves as a nice place to mount your amp so it sits a little recessed on the box like I did with my Alpine MRV-500 monoblock amp!

32 of 58 found this helpful

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ChaDog

Ranburne,Alabama

Overall
Durability
Value
Features
Design
Usability
Great Box and Great Deal!!!

September 17, 2013

Wanted to repower a old 12" MTX speaker. Replaced with a new box and as good as new! Speaker hits as hard or harder, than it did when it was brand new. Thanks........

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mike

grand rapids mn

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Value
Features
Design
Usability
great value great sound

October 14, 2013

Nice box preassembled. All you need is terminals and short piece of speaker wire!! Once sub is muonted if new season it!! Then pound on it !!!
Nice tight sound!

35 of 65 found this helpful

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Zwasinge

Moms House

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Value
Features
Design
Usability
Nice Box

September 17, 2013

Solid box with clean look. Nice terminals for easy install.

22 of 39 found this helpful

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Vlad

Ukraine

Overall
Durability
Value
Features
Design
Usability
Subwoofer Enclosure

December 22, 2014

I bought Subwoofer on this site. Send to a friend in Ukraine to participate in the competition for mobile media (car audio).

34 of 64 found this helpful

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Stephen

Webster, MA

Overall
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Value
Features
Design
Usability
Great quality

November 12, 2013

This is very solid for small price. Great quality enclosure here.

34 of 64 found this helpful

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MJones

Canada

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Value
Features
Design
Usability
Fantastic Value for such a great item!

September 17, 2013

After receiving the Box, I promptly installed it and began tuning my subwoofer and amp. Wow. Not only did the bass sound punchier, which was expected, it sounded much clearer and did not overlap my OEM speaker in my 02 Jetta.
The box is definitely a key component in my audio setup and I would recommend this product to any of my friends looking for this type of product.

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George

Marmora, NJ

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Value
Features
Design
Usability
well built enclosure

May 19, 2013

i purchased this along with the 12" Kenwood sub-woofer. The speaker sounds great in this box. no rattles or anything like that, built pretty solid and is just a good basic box shaped enclosure. i would highly recommend this enclosure if you are just looking for something simple, sounds good, and if you have the space for it in your vehicle or wherever you intend to use it!

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box user

el paso texas

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Value
Features
Design
Usability
Awesome box

October 31, 2013

The box was a great purchase and a great deal. Very happy with my purchase.

29 of 55 found this helpful

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Me

Jacksonville, FL

Overall
Durability
Value
Features
Design
Usability
Well Constructed, Nice Box

September 14, 2013

I only give it 4 Stars because I purchased this originally because the specs listed this box as having a 1.25 cu. ft. internal volume. I ideally need 1.25 cu. ft. for my Kicker Comp12. However, this box is 1.0 cu. ft.. The webpage was updated after I received mine. Still I kept the box, put a little more stuffing in it than required to make the sub think the box is even larger.

Other than that the box is very well constructed. I you were using it for a high powered 600W RMS or greater sub I would reinforce of the corner joints with wedges or corner braces for added stability (remembering to subtract the volume of the wedge braces, especially, from the internal volume). Meaning This box would be good for high powered shallow mount subs with a Vas slightly under 1.0 cu. ft..

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David

Federal Heights, CO

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Value
Features
Design
Usability
great box

November 17, 2013

Great box would buy again great build not too big if ya worried about space

32 of 62 found this helpful

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Tony

Stafford, virginia

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Value
Features
Design
Usability
So far so good!

October 8, 2013

I got this for my rockford P3D4-12. Powered by alpine m-500. Really rocks! I listen to mainly rock and everything sounds fantastic. Build quality of the enclosure is great!

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David

Caseyville, IL

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Value
Features
Design
Usability
Solid Cheap Box

September 18, 2013

For the money this box is just right. Nothing fancy but it looks clean and the connections are of good quality. I have zero complaints.

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paul

great falls, MT

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Value
Features
Design
Usability
Great Box

June 20, 2012

I had 3 subs in this box in the last 6 months and it is still in great shape. No real flaws with the box, i would buy a similar box, but i have moved on to ported boxes. This box can handle 1000 watts. I had overpowered 2 subs in it going at about 1200 watts and box is still sturdy.

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Certain Disaster

Dayton Ohio

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Durability
Value
Features
Design
Usability
Would recommend

April 19, 2012

The box is well built, black carpet was applied properly so it looks good sittin in my gray trunk. Highly recommend...

7 of 12 found this helpful

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Michael

Fort Worth, TX

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Value
Features
Design
Usability
Great deal!

November 5, 2009

Not only was the price outstanding but this is a wonderful product with a great look. Thanks Sonic Elec!!!

8 of 14 found this helpful

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Kelly

Lumberton, MS

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Value
Features
Design
Usability
Great box

September 27, 2013

I have a power acoustik. Reaper. In this box and it's slams

23 of 45 found this helpful

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Cole

Little Rock, AR

Overall
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Value
Features
Design
Usability
it's a square box!

September 18, 2013

Seems to be well built. This design is something you could build yourself but for the price its hard to justify the time to build it. I changed to a vented box though and am much happier with my sub now. I listen to mostly electronic music.

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Miguel

MIlan, TN

Overall
Durability
Value
Features
Design
Usability
works well

August 24, 2013

this box was perfect for my nvx sub and now hits really hard and clean. The sound is great and fits in my car just fine. Has no air leaks and holds the force of the subwoofer well. Love the free polyfill that came with it too.

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Matt

Bourne, MA

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Value
Features
Design
Usability
Great Box!

July 1, 2013

Exactly what I needed, plus the poly fil was a nice thing to have too.

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Matthew

overland park, KS

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Durability
Value
Features
Design
Usability
This box is great!

March 12, 2013

I recently upgraded my entire subwoofer system and this was the box I chose, for the price it is unbeatable. I have a Pioneer 12 inch champion series dual voice coil subwoofer in the box being powered by an Alpine MRP-M500 class d amp running at 500 watts at 2 ohms this combination sounds perfect. I have had many other setups before this. And I bought my current set up the be the end of my car audio line. I could not be happier with everything that I chose. The subwoofer sounds so good in this box being powered by the amp I have the lows are like butter and the highs are not unbearable. I highly recommend this box.

5 of 9 found this helpful

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D

Alexandria, VA

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Value
Features
Design
Usability
Works Great!

December 1, 2011

Bought this as replacement box. Couldnt hear a differnce but sounds the same as my old box.

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Max

San Diego, CA

Overall
Durability
Value
Features
Design
Usability
Does what it's mean't to do!

May 17, 2011

I purchased this for an Alpine SWX-1243D a few months back and it works like a champ! Took me a full five minutes to get my sub installed in this thing and I was ready to box. Solid build, good carpet color, and excellent price.

5 of 9 found this helpful

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adrian

San Diego, CA

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Durability
Value
Features
Design
Usability
awesome buy

June 24, 2010

Great buy for the price, I bought two and both of them are really sturdy and working great.

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Huntanator

Stillwater, Oklahoma

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Durability
Value
Features
Design
Usability
great box

June 17, 2010

great box. looks clean and well built. shipped fast. would buy again

9 of 17 found this helpful

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Jimmy

Rock Island, IL

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Durability
Value
Features
Design
Usability
U don't always get what U pay for!

February 17, 2010

This box has very nicely build quality and is very STURDY! What a bargain!
Thanx Sonic!

5 of 9 found this helpful

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adonis

brunswick, GA

Overall
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Value
Features
Design
Usability
great item

February 7, 2010

this is a nice box for a single subwoofer......and the price is good..

5 of 9 found this helpful

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Enox

Donna, TX

Overall
Durability
Value
Features
Design
Usability
BOX! :P

September 15, 2009

the box seems to be durable and its completely sealed. its just a box, it does what its supposed to.

5 of 9 found this helpful

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Richard

Sun Valley, CA

Overall
Durability
Value
Features
Design
Usability
good

August 18, 2006

this box is cheap and looks good, it does the job, for the money it is deffinitly worth it

7 of 13 found this helpful

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Rick

Canada

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Durability
Value
Features
Design
Usability
12

June 9, 2006

I've bought 2 different boxes from sonic. They are well built and super cheap. Even when shipping to Canada it beats the cost of building your own. This sized sealed box is great for low tight bass in all sorts of music. I'll be using it with an Alpine Type R and posibly a JLw7 when they're in stock again.

5 of 9 found this helpful

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EMil

la mesa, CA

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Value
Features
Design
Usability
Cant find a cheaper price

December 31, 2005

wow i have one of these that i bought off a friend for 40 and now its 25 brand new wow best price good work sonic.

5 of 9 found this helpful

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Johnny

Montevallo, AL

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Value
Features
Design
Usability
strong box

November 5, 2005

when this box arrived i was shocked to see how beefy it was. for 25 dollars i dont think you could get a much better deal.

5 of 9 found this helpful

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MARCO

Laurinburg, NC

Overall
Durability
Value
Features
Design
Usability
GOOD BOX

March 11, 2005

THIS BOX IS MADE OF SOME GOOD STUFF AND IS GREAT FOR A LOW WATT SUBWOOFER

5 of 9 found this helpful

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Aaron

FORT MADISON, IA

Overall
Durability
Value
Features
Design
Usability
nice quality box!

March 29, 2015

Very nice box! Well constructed and has a very nice fit!

2 of 4 found this helpful

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Freddy Krueger

Demotte , IN .

Overall
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Value
Features
Design
Usability
Well built at a great price !

March 23, 2015

I have a pioneer TS-W3004D$ sub mounted in this box which I also purchased from sonic and it sounds fabulous . It is made very sturdy and it barely fits in my little Fiat 500 . You couldn't make one this cheap and with the FREE shipping , it is a win win no brainer .Sonic is very classy and professional with extremely fast shipping ! I will only use sonic for my car audio needs . Way to go sonic .

2 of 4 found this helpful

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Joshua

Rockport, IN

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Value
Features
Design
Usability
Compact and power packed!!

March 22, 2015

Built great, really like the compact size and polyfill lined straight out of the box. Plug and play it's that easy.

2 of 4 found this helpful

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Robert

Manchester, NH

Overall
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Value
Features
Design
Usability
Excellent box

October 24, 2013

Switched to a sealed box for my Alpine Type-X. Much better SQ! Now I can push more power, and have more accurate bass. Box was well built, as described, but contained a minuscule amount of fiber. Not sure how well this affects the box, but I'm happy overall... so it's fairly a minute thing to worry about anyways.

7 of 14 found this helpful

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Lloyd

Moreno Valley, CA

Overall
Durability
Value
Features
Design
Usability
Great Box

July 5, 2013

This box is made extremely nice and has held up well. Great Value. I only wish that the opening was not already cut out, as not all 12" subs have exactly the same size opening and it is a little difficult to trim 1/8" off.

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Yugedrums

Florence, SC

Overall
Durability
Value
Features
Design
Usability
Solid little box

April 1, 2013

Bought two of these for two Kicker CompVR 12's and they are made nicely, carpeted well and are solid little boxes. They sound great and are at the very low end of acceptable internal box sizes, so they are tiny compared to other boxes. Can't beat the price either!

4 of 8 found this helpful

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Pedro

bakersfield, CA

Overall
Durability
Value
Features
Design
Usability
Nice sound

March 6, 2013

Came pre poly filled,sounded amazing for a pre made box. also can't beat the price and service.

4 of 8 found this helpful

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Nucc

Boston

Overall
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Value
Features
Design
Usability
Great Box

February 28, 2013

Very compact and finished nicely with the carpet. Looks great with my black sub and silver amp.

4 of 8 found this helpful

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Rockshard

Sierra Vista, Az

Overall
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Value
Features
Design
Usability
Allows hard hits

February 25, 2013

It fit the late model Implas perfect. I couldn't have done it better even if i'd of measured first. Woofer hits hard and sounds clean.
Clean install,
Perfect for metal and hard rock is my opinion.
I'm enjoying the purchase 100%

6 of 12 found this helpful

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Jake

Minneapolis, MN

Overall
Durability
Value
Features
Design
Usability
Great box for a cheap setup!

January 13, 2013

I love the quality of the box itself. It has held up very well pushing my 12" VVME. I purchased this enclosure because it was the cheapest I could get at the time. However, I am upgrading now that I can afford a ported box. The carpet is a very deep black and the box itself is rather small, granted it is a sealed enclosure with only 1.2 ft of volume. Ultimately, I would recommend this subwoofer to anyone looking for an affordable sealed box that fits in their trunk and sounds great!

5 of 10 found this helpful

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Jake

Santa Rosa, Ca

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Value
Features
Design
Usability
Works perfect

January 29, 2012

I bought this box because it was close to the specs for my 12" JL W3, I put just a bit of box filler and I sounds great! I wouldn't have anything to say bad about this box. It does everything I want perfectly!

4 of 8 found this helpful

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dave

agawam ma

Overall
Durability
Value
Features
Design
Usability
great item

July 20, 2011

Bought this single sub box and it was built great.

5 of 10 found this helpful

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800a4

Horn Lake, Ms

Overall
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Value
Features
Design
Usability
Very well made and inexpensive box.

June 8, 2011

Installed an MTX 5500 12 inch sub in this particular enclosure and was really surprised. No flexing to speak of while being fed a solid 450 watts. Well worth the money .

5 of 10 found this helpful

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davetron22

Green Bay, WI

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Value
Features
Design
Usability
Solid Product for a Solid Price

September 22, 2010

The enclosure fits perfect into just about any trunk and is built solid. I will be buying another one for house my other RFP2D2 sub shortly. Perfect size and the connectors work great!!!

3 of 6 found this helpful

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B

Carlisle, Pa

Overall
Durability
Value
Features
Design
Usability
Decent inexpensive enclosure

July 6, 2010

I bought this enclosure 6 months ago for my Rockford Punch P3D212. The only complain I have is that the sub didn't fit; I had to sand the entire opening for about 15 minutes to get the sub in. Otherwise since then, I have had no complaints.

4 of 8 found this helpful

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hess

ct

Overall
Durability
Value
Features
Design
Usability
good alternative to building a custom box

April 18, 2010

This box has good build quality, and had the right dimensions to fit my new woofer. I'd recommend it to anyone looking for a sealed enclosure for their 12'' sub. I actually bought one for a friend of mine as well.

4 of 8 found this helpful

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Eric

Bedford, OH

Overall
Durability
Value
Features
Design
Usability
Great Deal!

November 16, 2009

Low cost fast shipping and overall an excellent product. First time shopper at Sonicelectronix and what a welcome, I will definitely be back to do more shopping. THANKS SONICELECTRONIX!!!

4 of 8 found this helpful

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SpeakerMaster

Orlando,FL

Overall
Durability
Value
Features
Design
Usability
Great price and good product

October 29, 2009

You can count on the product and the prices are great, quick shipping

4 of 8 found this helpful

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Hector

Houston, TX

Overall
Durability
Value
Features
Design
Usability
Great box

October 5, 2009

Nice tight clean bass in a compact enclosure. Wish it came with a grill guard

5 of 10 found this helpful

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Sean

St. cloud, Florida

Overall
Durability
Value
Features
Design
Usability
Single 12" MDF Enclosure

August 26, 2009

I purchased 2 of these enclosures and so far I am quite satisfied with the product. I have not had any problems with this product and I would recommend it to anyone who is looking for a small durable enclosure for your 12'' sub of any kind.

4 of 8 found this helpful

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Chillis

Philadelphia, PA

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Durability
Value
Features
Design
Usability
Great Product!!

July 31, 2009

The Product was really worth the money, Fast Shipping and easy to put together. Thanks Guys.

5 of 10 found this helpful

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Brandon

Rockledge, Fl

Overall
Durability
Value
Features
Design
Usability
excellent box

July 16, 2009

great box still in use to this day

5 of 10 found this helpful

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cortjest

little rock, ar

Overall
Durability
Value
Features
Design
Usability
hot digity

June 21, 2009

good sturdy box, no problems, nice and sqaure, there was nothing wrong with the box. made from plywood (or particle board, or similar) with a felt exterior

4 of 8 found this helpful

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none

evansville, in

Overall
Durability
Value
Features
Design
Usability
Good enclosure

May 31, 2009

Good quality. Put in a Kenwood KFC-W3011 sounds great.

4 of 8 found this helpful

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Shaya

Laguna Hills CA

Overall
Durability
Value
Features
Design
Usability
dont let the price fool you

April 25, 2009

Im running two p3's in two of these boxes, for the price, you cant beat this box, its cheap, it sounds good, no air leaks, looks great, built very sturdy, things get caught in the carpeting easily, but alot of sub boxes have that problem

4 of 8 found this helpful

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Marcus

Peoria Heights, IL

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Durability
Value
Features
Design
Usability
......

March 1, 2009

great match for sub

4 of 8 found this helpful

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William

San Jose, CA

Overall
Durability
Value
Features
Design
Usability
Depend on your sub

July 13, 2007

I use this sub for Alpine Type-X that has a huge magnet and runs at 1000W. I realized that this enclosure is not big enough for big-magnet subwoofer since the remaining space is less than 1 cubic ft. If you're gonna use it for Type-R, W6 and smaller sub, this enclosure is the one you're looking for.

4 of 8 found this helpful

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Thomas

Crestwood, KY

Overall
Durability
Value
Features
Design
Usability
Good quality

July 13, 2007

This sub box is solid and does its purpose. It is basic and very cheap for what it is. No complaints here.

5 of 10 found this helpful

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Mike

Henderson, NV

Overall
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Value
Features
Design
Usability
AWESOME VALUE

February 26, 2007

This enclosure was a great find. Really cheap and sounds great. Sturdy design. I'm running a 900watt RMS Fi sub in it and sounds awesome

4 of 8 found this helpful

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Ben

West Lafayette, IN

Overall
Durability
Value
Features
Design
Usability
Great Subwoofer Box

December 22, 2006

This box is awesome. I have a short extended cab truck, and it really produces some tight crisp bass for the amount of room that I have. The sales representative was also very helpful with the questions that I had. I would recommend buying this enclosure if you are pressed for space but still want some good clean sound.

4 of 8 found this helpful

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Wanda

SPRINGFIELD, OH

Overall
Durability
Value
Features
Design
Usability
Simple, affordable, durable, enclosure...

July 11, 2006

This box is really thick and heavy. I put my Power Acoustics FUBR-12 (12" subwoofer, 900 rms)in it and it sounds great, seems very durable.

6 of 12 found this helpful

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jonathan

Greensboro, NC

Overall
Durability
Value
Features
Design
Usability
Most inexpensive i've seen

July 11, 2006

This box is great, great quality and very professional looking so you'll never be made fun of when you're showing off your system. Best price on the market i must say. Definately glad i picked this one up. No problems with installing my Pioneer sub.

4 of 8 found this helpful

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Nick

Lafayette, CA

Overall
Durability
Value
Features
Design
Usability
Great box

March 28, 2006

Cheapest box you can find on the net new. Great value and works perfect. Looks nice and doesn't take up too much room.

4 of 8 found this helpful

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Gerry

providence,RI

Overall
Durability
Value
Features
Design
Usability
Great value

March 24, 2015

The belva box is great! Good price. Perfect size. The polyfill it came lined with wuz just enough to make up for the displacement of the subwoofer I installed in it. Solid box!

2 of 5 found this helpful

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Todd

Bradenton, FL

Overall
Durability
Value
Features
Design
Usability
Great box at a great price

January 29, 2015

Box came in very protective packaging. Sounds good for a smaller box. Very pleased with this purchase!

18 of 37 found this helpful

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sal

somerton az

Overall
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Value
Features
Design
Usability
ow some

December 23, 2014

great box for the price well build for the price looks like a more expensive box

9 of 19 found this helpful

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john

abilene texas

Overall
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Value
Features
Design
Usability
good deal

April 3, 2014

overall good deal.nice box well crafted and good looking for the right amount of money.

11 of 23 found this helpful

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Whiteboy

mobile, al.

Overall
Durability
Value
Features
Design
Usability
sub box

February 10, 2014

Very well made box and if you don't have a lot of space this is the box for you. I went from a ported 11/16 box to this 3/4 sealed box the bass is alot deeper and tighter, i am very happy with this box and the price. Tt only took a week to get but it saves you about 50 bucks.

12 of 25 found this helpful

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DaVinci

Sacramento, CA

Overall
Durability
Value
Features
Design
Usability
Very nice

January 5, 2014

I got this as a bundle. I am very happy with it. I prefer closed over open any day.

15 of 31 found this helpful

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Lakeman

Delafield, WI

Overall
Durability
Value
Features
Design
Usability
Great Value

October 31, 2013

No buzzing or rattling. Solid construction. Well built for low price.

24 of 49 found this helpful

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Pheznik

Brandon, MS

Overall
Durability
Value
Features
Design
Usability
Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

June 21, 2013

It is a great simple and cheap box. I had to make the opening a bit bigger but it took all of 3 mins with a sander/grinder. I've had no issues with this box.

3 of 7 found this helpful

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steve

cincy, oh

Overall
Durability
Value
Features
Design
Usability
great simple box

February 13, 2013

I recommend this box for anyone who wants a simple, clean, quality built box. It works well and has clean bass in my trunk. It has the bare minumum of poly fil for this box, it wouldn't hurt to add a little bit more since this is a smaller squared box for a 12' sub. Need something to mount it with also.

3 of 7 found this helpful

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david

fort walton beach, FL

Overall
Durability
Value
Features
Design
Usability
Awesome box

October 23, 2012

Great product and an even better price would definitely recommend.

3 of 7 found this helpful

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nicolo

hillsborough

Overall
Durability
Value
Features
Design
Usability
great enclosure

August 19, 2012

This box is strong. Works great with the kenwood sub I bought from sonic. Polyfill is already installed cant go wrong. Sonic is the best place to buy your electronics. Everything i bought came in perfect condition.

4 of 9 found this helpful

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josh

ohio

Overall
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Value
Features
Design
Usability
great product

October 18, 2011

Nice constuction well built. Would buy from seller again!

3 of 7 found this helpful

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jay

garland texas

Overall
Durability
Value
Features
Design
Usability
hmm.

January 17, 2011

This is a great box as long as ur not runnin more then 300 rms to ur subs. the box just isnt strong enough for the air that ur subs are moving. other then that its a good sounding box for sealed.

3 of 7 found this helpful

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alex

Waltham, MA

Overall
Durability
Value
Features
Design
Usability
Great sub enclosure for the money

March 1, 2010

Great box, does exactly what its supposed to. put a 12" kicker 07cvr124 in it paired to a visonik amp. man it was loud, had it in an explorer than Corolla, shook the ground!

4 of 9 found this helpful

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Z

San Antonio, TX

Overall
Durability
Value
Features
Design
Usability
Works great!

June 4, 2009

Haven't had a problem with this enclosure at all. Fits great, solid construction, and excellent price.

4 of 9 found this helpful

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Clint

Braselton, GA

Overall
Durability
Value
Features
Design
Usability
Great Deal

December 22, 2006

I was attemping a basic install for my daughter.

This was my first time loading a subenclosure. I was worried that I would get a cheaply made box. It is sturdy and sounds great.

I put in a little poly-fill. Loaded the sub. Mounted the amp on the side of the enclosure and wired it all up. The kids all like it, too.

4 of 9 found this helpful

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Matt

Danville, CA

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Durability
Value
Features
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Usability
Its Okay

April 13, 2006

i have heard many things about boxes like this

Pros: its cheap carpeted and big

Cons: its not fot for all subs, meaning that your sub many not like the box specs, sometimes its better to build your own

but nonetheless if your lazy or can build a box this one would do just fine

3 of 7 found this helpful

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Francis

Canada

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Value
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Good product

August 10, 2005

Nice box. Very simple. Solid and clean looking. Good wire connections. Great for me because it does not take away a lot of trunk space! Can not go wrong at this price.

4 of 9 found this helpful

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Steven

Amelia, OH

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Value
Features
Design
Usability
Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

August 30, 2014

Great box and great value. Had to increase cut out size a bit for my sub, but not their fault I didn't pay attention to it!!!!. I'll be purchasing another or possibly a dual box in the future. Well built imo

10 of 22 found this helpful

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David

Warrenville, SC

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Value
Features
Design
Usability
Great Enclosure For The Price!

August 21, 2014

I received this enclosure via a package deal from Sonic Electronix with the Infinity Kappa 120.9w. They are a great match! The enclosure matches the subwoofer manufacturer's recommended sealed enclosure size.

This enclosure arrived in perfect condition, with no air leaks. I have tested out the Infinity 120.9w woofer with 600 wrms pounding to bass heavy music, and the enclosure held strong.

The terminals provide the option for banana plugs or direct wire from the amp using the screw down option (which I chose because I have no banana plugs on hand). I may be getting some banana plugs just for easier connect/disconnect.

The fact that the enclosure carpet (black) matches my Lexus trunk carpet perfectly is a nice bonus.

I did add some extra poly-fil - the amount that came with the enclosure was one thin layer around the interior of the box - not enough for my liking. I bought some poly-fill and packed the box half full.

This enclosure should last a long time - it is very solid and well made. I also like that the sides are inset about 1/4", allowing for easy grip when lifting the enclosure.

17 of 36 found this helpful

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Motor man

Butte, MT

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Value
Features
Design
Usability
Good box well made

August 12, 2014

Very good box for the price. Well made and very sturdy. carpet has week glue but most boxes have that problem at the seams. Over all you can't beat this box for the price.

13 of 28 found this helpful

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Dave

canton ohio

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Value
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great box

June 24, 2014

Very impressed with the quality of the product for the price

8 of 18 found this helpful

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sam

Canada

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Value
Features
Design
Usability
works but..

December 23, 2013

feels bit cheep and i had to glue seams they wiggled a bit

8 of 18 found this helpful

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Kim

Wantagh, NY

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Value
Features
Design
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Soild Box

September 19, 2013

Nice solid box. Put together well, no air leaks. Mounted a Kenwood KFC-W3013PS in my box and what a great pair.

20 of 42 found this helpful

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Tosh

Bay Area, CA

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Value
Features
Design
Usability
Good box

September 4, 2011

Used an Alpine type R 12 with a m500 amp and this box hits quite nicely for it. However the plastic terminal cups that came with it melted and I had to order a replacement. Overall the sound quality is good and hits hard (could be harder so might upgrade to custom spec ported).

3 of 8 found this helpful

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Ethan

Greensboro, NC

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Value
Features
Design
Usability
Really nice

August 17, 2011

For the price i couldn't have asked for more. I'm using a kicker 12 inch subwoofer and it hits really clean. The material is nice and thick and well put together.

3 of 8 found this helpful

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maxisawesome

San Diego, CA

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Durability
Value
Features
Design
Usability
Worked For Me!

April 8, 2011

Just what it says it is - sealed enclosure for a 12" subwoofer. My Alpine SWX-1243D fit tight in and wiring was a snap. Been actively using this box for three months now with no issues. Solidly made, shipped well.

5 of 12 found this helpful

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Chris

NM

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Value
Features
Design
Usability
Nice box

July 29, 2009

Great box. I'm running a RF P3 and it sounds great, no problems. Mine ends up being way heavy with my sub, I'll probably end up mounting it permanently to the floor of my trunk. But SonicElectronix offered, for me, the best price in sub enclosures anywhere!

3 of 8 found this helpful

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Andrew

Arleta, CA

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Value
Features
Design
Usability
great box

April 13, 2006

i put my alpine in here and it fit perfectly. sounds great. i recommend it to anyone.

3 of 8 found this helpful

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John

Riverside, CA

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Value
Features
Design
Usability
Excellent box

March 27, 2006

This box is a great value for only $25.
Very well made, solid MDF. Much stronger than I expected... weighs 25lbs.
Carpeting is nicely done, fairly good quality.
The cutout was a little off for my RE SE12, but I managed to make it fit.

3 of 8 found this helpful

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Robert

Fresno, CA

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Durability
Value
Features
Design
Usability
Belva 1CF 3/4" Sub Box

April 25, 2014

I didn't expect much for the Price. I was Pleasantly Surprised. This Box is Well Made. Extremely Well Made for the Price. The Binding Posts are Gold with Decent Quality. The Box has some Batting inside, though I added about twice as much more to it. You could use Slip On Connectors on the Inside of the Binding Posts, but I chose to Solder. This Box is subjected to Lots of Vibration and I didn't want anything working Loose. The Speaker Opening is a Perfect fit for my Sub. I tried to add Sealing Tape to make it Tighter, but it was already so tight that the Sealing Tape wouldn't fit, so I left it Off. I've been driving around for several weeks now and not a rattle. I'm extremely Surprised and Satisfied with this Sub Box.

15 of 33 found this helpful

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Danny

Gastonia, NC

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Value
Features
Design
Usability
does its job...

April 4, 2014

Works perfect, the fill inside is thinner than it looked but it works.

8 of 19 found this helpful

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Raj

bronx, ny

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Value
Features
Design
Usability
Nice

January 6, 2014

I like everything about the box, except for the terminal connectors. It comes with the screw on ones, I would prefer the spring loaded. But thats something one could live with.

17 of 37 found this helpful

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MJ

Melbourne, Fl

Overall
Durability
Value
Features
Design
Usability
Decent box

September 18, 2013

overall box is build solid and has now sealing issues like some slighter cheaper ones found on amazon.com. I was a little disappointed in the foam packing, the picture on the ad looks like it has a decent amount in the box, in real life is was very thin just enough to line the inside walls. Overall sound out of it is very good, deep, clear bass.

11 of 25 found this helpful

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Rocket

Gastonia NC

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Value
Features
Design
Usability
Perfect Box Lowest Price Period...

August 20, 2013

Perfect Box for my 12 inch Kicker sub. Exact size I needed. Well made, lowest price anywhere. Fast shipping. You cannot go wrong with this box. I love it . Thanx Sonicelectronix.

5 of 13 found this helpful

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Shannon

Centerton, AR

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Value
Features
Design
Usability
great for the price.

December 19, 2010

there is no way anyone will beat these prices. if the specs meet the needs for your sub and u want great sq buy this box.

11 of 26 found this helpful

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Krock

Roswell GA

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Value
Features
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Usability
Great Box!!

February 18, 2010

I have a JL 12w6v2 in it and it sounds great!!!

6 of 16 found this helpful

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:^)

sioux falls, SD

Overall
Durability
Value
Features
Design
Usability
COOL BOX

October 8, 2014

GREAT BOX FOR THE VALUE!!! :^) I WOULD DEFINITELY RECOMMEND THIS BOX TO ANYONE THAT NEEDS ONE!!!

6 of 17 found this helpful

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Tom

OH

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Features
Design
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Great box

December 31, 2014

Very nicely made. Good choice/buy. Sonic is the best.

8 of 22 found this helpful

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Martin

Texas

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Design
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Awesome box for good price!

December 10, 2013

Box is awesome and seller responded fast and quick shipping!

19 of 44 found this helpful

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nukka

pa.

Overall
Durability
Value
Features
Design
Usability
Nice box

March 16, 2014

Sturdy construction, nice carpet, would definitely buy again. If you your looking for a good sealed en closer this is perfect for you.would definitely recommend to my friends.

5 of 22 found this helpful

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Accessory Tools and Products

Accessories added

NVX XKIT42 - 4 Gauge Amp Kit

Pure Virgin Copper, 4 Gauge Amplifier Installation Kit

Your Price $69.99

Belva BAK42 - 4 Gauge Amp Kit

CCA 4 Gauge Wiring Kit with RCA & Speaker Wire

Your Price $29.99

8 Gauge - Stinger Amp Kit

Single amplifier 4000 Series complete installation kit.

Your Price $39.99

Scosche WGB12

12" Protective Waffle Style Subwoofer Grille

Your Price $4.99

GS Audio BG-12

Chrome Bar Style Grille for 12" Subwoofers

Your Price $13.99

High-Performance Streetwires Speaker Wire

25 ft. of 12 Gauge speaker cable with twisted pair construction for improved power flow and fine-stranded copper windings.

Your Price $44.95

NVX SDRLR1 Universal Roller Tool

Install your sound damping with the SDRLR1 tool

Your Price $7.99

20 ft. of Dynamat Xtreme Trunk Kit

Keep your trunk from rattling and improve bass quality by using a sound dampening trunk kit.

Your Price $94.95

NVX SDBP40 - 40 ft. (10% More Than Competition)

40 ft. Bulk Pack of Sound Dampening Material

Your Price $119.99

36 ft. of Dynamat Extreme Bulk Pack

Make your sound system sound perfect by reducing road noise with 9 sheets of sound dampening material.

Your Price $159.99

Banana Clip Terminals

These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.

Your Price $1.99

Insulated Female Quick Disconnect Connectors

100 pack of 12-10 Gauge yellow insulated quick disconnects.

Your Price $7.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles or can be used for your polyfil.

Your Price $6.99

Car Stereo and Speaker / Subwoofer Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $16.99

Browse 4 questions and 20 answers
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Why did you choose this?
Sonic Electronix Store
I wanted an enclosure for my new MB Quart 12 inch PWM304 and sealed enclosure are better in tight bass which is what i seek. I already had 2 10inch Type R sub with vent enclosure which was fun but not really accurate with drums and etc...
Pierre-luc D on Apr 23, 2015
I wanted a sealed box that fit the subzero subwoofer. It is 25% off with the subwoofer and decided to purchase it.
Ian H on Jan 8, 2015
3/4" MDF with a quality screw type terminal and a great price. to bulid it myself would cost the same price. and FREE shipping . AWESOME DEAL. And the many Great reviews. Thankyou and GOD BLESS
JEFFREY G D on Mar 18, 2015
deal package
JAIME B on Dec 14, 2014
I have a Sony Xplod XS-L122P5. Will this box work?
A shopper on Jan 24, 2015
Best Answer: it should assuming its round. and not misshape
Reply · Report · Sean M on Jan 25, 2015
· Add Answer · I Have This Question Too (0)
Where are Belva subwoofer enclosures made?
A shopper on Feb 24, 2015
Best Answer: Thank you for the recent inquiry!

After researching this specific product, unfortunately we don't have the necessary information to assist you. Due to the limited information at our disposal, we're not in the position to provide you with the answer you're seeking. Therefore we invite you to contact the manufacturer directly for additional support. Since they have additional resources at their disposal, they're much better equipped to aid in your request.
Reply · Report · Customer SStaff on Feb 25, 2015
· Add Answer · I Have This Question Too (0)
What are the box demensions?
tom e on Feb 6, 2015
Best Answer: Box Dimensions: 14-1/4"L x 14-1/4"D x 14-1/4"H. Did you read the description? Do you any other dimensions?
Reply · Report · Derek V on Feb 7, 2015
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

MDFS12

UPC

818060010101

Weight

20.00lbs

Internal SKU

mdfs12

Internal Product ID

951

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)