Belva BBX212BK Dual 12" Ported Sub Box w/ Custom Black Baffle

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Belva BBX212BK (BLACK)

3.70 Total Cu Ft - Dual 12" 3/4" MDF Ported Subwoofer Box Enclosure with Custom Black Baffle

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List price $129.99

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$99.95

with warranty

+ FREE Shipping in US 48

Order within 18 hrs 19 mins to ship 10/21

Arrives by Wednesday, Oct. 23 to zip 23465

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Free Speaker Wire with Enclosure Purchase

Get a Free roll of Belva 12 Gauge Speaker Wire when you purchase a Belva BBX Subwoofer Enclosure. Simply Click the "Add Both to Cart" button to the right. This offer cannot be combined with any other coupons or offers.

14.99

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Belva BBX212BK (BLACK)

$99.95

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100% OFF

Belva BBSW127

$14.99

Special Price $0 ($14.99 if purchased separately)

Belva BBSW127

• 7 Meters
• 12 Gauge Speaker Wire
• High Strand Count for Maximum Flexibility
• 23 Foot Length

(Offer 1 of 1)

Combined Total Price

$99.95

You Save $14.99

 

General Features:

  • 12" Dual Ported Subwoofer Enclosure
  • Black satin finish front face board
  • Covered in black carpet
  • Durable 3/4" Medium Density Fiberboard (MDF) construction
  • Subwoofer mounting depth: 14 1/2"
  • Subwoofer cutout diameter: 11 1/4"
  • Box volume: 1.85 cubic feet (per chamber)
  • Total box volume: 3.7 cubic feet
  • Dimensions: 16"D x 35"W x 16.25"H
  • Also available in Blue and Red
  • Authorized Internet Dealer
  • 30-Day Return Policy

Port Specifications:

  • Rectangular Slot Port
  • Number of ports: 2
  • Port volume: 0.18 cubic feet (per port)
  • Total port volume: 0.36 cubic feet
  • Estimated port tuned frequency (fb): 35 Hz
  • Port dimensions: 1.5"Width 12.5"Depth

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.
Vented / Ported
Number of Subs/Speakers
This value represents the number of speakers or subwoofers that the enclosure accommodates.
2
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.
11.25"
Maximum Speaker Depth
Your subwoofer or speaker must not exceed this dimension in order to properly mount in this enclosure.
14.5"
Total Box Volume
The internal volume measurement in cubic feet before subwoofer magnet displacement.
3.7 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.
1.85 cubic feet
Height
The height of the item, measured from top to bottom, in inches.
16.25"
Width
The width of the item from left to right (side-to-side) measured in inches.
35"
Depth
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
16"
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.
2
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.

Spring 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
35 Hz

Port Details

Number of Ports
The number of ports the enclosure has.
2
Tuning Frequency
35 Hz
Port Diameter
The outside diameter of the port. Check the product's owner's manual for the recommended port diameter for your sub.
12.5"
Port Length
The length of the included port tubes. Many tubes are cardboard and may be cut to the length recommended by the sub's manufacturer. Check your product's owner's manual for the recommended port length for your sub.
1.5"

Warranty and Return Policy

Parts Warranty Duration
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
59%
4 Star
23%
3 Star
18%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.7
Features
4.5
Design
4.8
Usability
4.4

GA

Overall
Durability
Value
Features
Design
Usability
sounds great

October 10, 2013

Box sounds great. Only problem is the trim ring on the Hifonics subs wouldn't fit without a little grinding.

46 of 57 found this helpful

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St.Louis

Overall
Durability
Value
Features
Design
Usability
Great price

March 25, 2014

Speaker box is very nice the only problem I had was the face plate was to small for my speakers I had to cut a bigger hole so they can fit.So watch out for the size,dimension on this product. I would recommend this product

42 of 51 found this helpful

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Redding, CA

Overall
Durability
Value
Features
Design
Usability
Solid Box

September 27, 2013

this box is pretty solid. i have had it for around 2 months now and its workikng great with my two alpine type s. it feels well bilt and looks nice with the shiny front part.

39 of 48 found this helpful

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Tuba City, AZ

Overall
Durability
Value
Features
Design
Usability
awsome value an great look

June 10, 2014

I just got one Belva BB212BK BOX ,pretty big for two 12" NVX the sound was smooth and had just the right amount of bass

38 of 47 found this helpful

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Cambridge, OH

Overall
Durability
Value
Features
Design
Usability
yes

March 8, 2015

This box is nice and heavy. It looks sexy and my nvx 12s fit in it. I would recomend this box. I dont like the terminals but thats not a big deal.

35 of 42 found this helpful

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lakeland, FL

Overall
Durability
Value
Features
Design
Usability
Bargain Package Deal

January 12, 2015

Looks & Sounds Great...Box is put together well & Speakers sound Amazing

37 of 47 found this helpful

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Hinesville, GA

Overall
Durability
Value
Features
Design
Usability
Great looks with great construction.

March 23, 2015

It's simple and straightforward. The construction is great, and it came securely in another box. Separate ports for each sub. The is the best you're going to get without paying an arm and a leg for a custom enclosure.

31 of 38 found this helpful

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Stevensville, MT

Overall
Durability
Value
Features
Design
Usability
Ok..

April 4, 2015

Not even a couple days after bumping two gto jbl in it the carpet started to split... But overall I like the bezel- but only because I paid close attention to diameters and measurements of subs I bought compared to this box's measurements. Would be better if they made it to where you could wire in a series the correct way.

29 of 35 found this helpful

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APO , AE

Overall
Durability
Value
Features
Design
Usability
GREAT BOX

November 6, 2016

Great box. It arrived almost an entire week early to my APO box (pretty impressed) and in perfect condition. My Sundown Audio SA 12's fit perfectly in the cutouts. This box slams with the SA's running at 1500w RMS. No port noise and plenty of punch in the lower frequencies. I would definitely recommend this box to anyone running a medium sized setup like mine. I did have a little issue getting it in the trunk of my E39 BMW but nothing to complain about.

3 of 3 found this helpful

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Fresno, CA

Overall
Durability
Value
Features
Design
Usability
Best Box for the Price

June 17, 2016

This box is such an amazing value. It looks amazing and is constructed very well. The only complaint is that I had to resize the cut out for my subwoofers to fit. But overall it is an amazing value and I would definitelt recommend to a friend.

1 of 1 found this helpful

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Magnolia, NJ

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Huge

April 24, 2016

Huge box for huge sound highly recommend for powerful subs that need the space!

1 of 1 found this helpful

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St.Peters, MO

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Great quality

March 9, 2016

Well let's first start off by saying great job to all that work at Sonic! This box is great. It is very well made, and I received my order super fast. I am definitely going to recommend Sonic to everybody I know!

1 of 1 found this helpful

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Boone, IA

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Awesome Box!

September 3, 2019

I bought this peticular box as it was almost spot on for cubic feet for my JL Audio Subs. This thing is built like a tank. The carpet is good quality and the front glossy part shines real nice. If your looking for an inexpensive yet not cheaply built box, this is the one.

0 of 0 found this helpful

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Ambridge pa

Overall
Durability
Value
Features
Design
Usability
Worth it

March 15, 2018

Nice durable box looks an perfomes very well great value

0 of 0 found this helpful

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Paterson nj

Overall
Durability
Value
Features
Design
Usability
Nice box

March 9, 2018

Nice box but once I put the speakers in it the front fence of the speaker box wouldn’t fit over the speakers the holes were to small so I had to pay to get the face trimmed

0 of 0 found this helpful

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Capac

Overall
Durability
Value
Features
Design
Usability
Almost perfect

March 4, 2018

Bout this box to house two of the new Alpine Type R 12’s. The cut outs on face plate of the box is a little too small for the subs to fit (if you keep the rubber ring surround on the subs). So mounting was difficult. After fighting with it for a while they worked out. Sounds great.

0 of 0 found this helpful

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Auburn Al

Overall
Durability
Value
Features
Design
Usability
Great box

February 3, 2018

Great box in my opinion. I have 2 Orion XTR 12s in it and they sound amazing. Ordering another of these boxes to run 4 12s soon

0 of 0 found this helpful

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$city, $state

Overall
Durability
Value
Features
Design
Usability
Excellent product!!!

September 7, 2017

I would definitely recommend this box. Excellent quality, shipped on time, and sounds GREAT!!! You won't find a better box in this price range

0 of 0 found this helpful

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,

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
This box slams!!!

August 3, 2017

This is a awesome box well built and very solid worth every penny!!
I put two Sundown Audio subs in it and it slams!!!
I honestly love it so much I am fixxen to order a second one so I can run four 12's in my truck!!
If you don't like rock solid low end bass that makes your car pulsate ,
or bass that hit's so hard it blurs your vision!!
This beautifully well crafted box is not for you!!
I highly recommend this product and Sonic Electronix I guarantee that you will not be disappointed with either!!!

0 of 0 found this helpful

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Thomasville, Nc

Overall
Durability
Value
Features
Design
Usability
This box slams!!!

July 9, 2017

This box is amazing for the low price! if you are looking for a heavy well built box that will shake the rear view mirror slam off your windshield look no further!!
I loaded this beautifully crafted sumbitch with two sundown audio 12's and hit it with 800 watts rms and was blown the hell away!!
I would highly recommend this box to anyone who is looking to shake the pantie's off ya girlfriend or melt down grandpa's hearing aid from 2 block's away!
I will be doing business from hear on out with the fine folk's @ Sonic Electronix !!!!

0 of 0 found this helpful

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Martinez, GA

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Have 1

May 8, 2016

Bought this box, part of the front cover where the screws are was damaged during shipping, but still decent box

0 of 0 found this helpful

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Charleston, SC

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Caution!

May 5, 2017

Most subs with beauty ring or thick mounting ring will NOT fit in box. Will have to cut subs or box.

0 of 1 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 $79.99

Belva BAK42 - 4 Gauge Amp Kit

CCA 4 Gauge Wiring Kit with RCA & Speaker Wire

Your Price $25.99

8 Gauge - Stinger Amp Kit

Single amplifier 4000 Series complete installation kit.

Your Price $36.99

Belva BAK02 - 1/0 Gauge Amp Kit

CCA Wiring Kit with 2-Channel RCA & Speaker Cable

Your Price $49.99

NVX XKIT02 - True Spec 1/0 Gauge Amp Kit

Pure Virgin Copper, Full 1/0 Gauge Amp Kit with RCA

Your Price $139.99

Scosche WGB12

12" Waffle Style Protective Subwoofer Grille

Your Price $7.99

Atrend 12G

Chrome Bar Style Grille for 12" Subwoofers (1Pair)

Your Price $23.99

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 $99.99

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

40 ft. Bulk Pack of Sound Dampening Material

Your Price $99.95

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 $11.99

Product Summary

Manufacturer

Model Number

BBX212BK

Weight

62.00lbs

Internal SKU

bbx212bk

Internal Product ID

72853

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: Belva BBX212BK (BLACK)

Item Added to Cart

Belva BBX212BK (BLACK)

3.70 Total Cu Ft - Dual 12" 3/4" MDF Ported Subwoofer Box Enclosure with Custom Black Baffle

$99.95

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NVX XKIT42 - 4 Gauge Amp Kit

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Scosche WGB12

12" Waffle Style Protective Subwoofer Grille

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