Customer Ratings & Reviews

Wire

This wire is silver tinned IFC and is true to spec. Heavy duty jack and a high strand count for easy installation. Best wire I have ever purchased.

Good Box

Great box does well with my subs would buy again

Great product for your $

Its pretty good package for installing amplifier i recommend this if you're looking for good wires for your system

Heavy Duty!

I would recommend this product for the guy's out there that are serious about their music. If you got good, high quality subs, then this box will make them perform to your sub's max output with out worry of blowing up your box.

nvx ftw

Nvx is my go to manufacture for everything all there products give u the most bang for your buck

A+

Quality wire, built to spec. Highly recommended. I used NVX wires and accessories for all of the electrical in my car. Did the big 3, have about 40FT of 0/1 gauge NVX wire and 50FT of the 16 gauge speaker wire for all of my speakers. Very happy with the results.

good box

I bought this box for 2 12" kicker cvx subs 750 watts a piece its a great closed box for them especially stuffed 1/4 with pillow stuffing.. looks real good to.. quick shipping

good value

product worked for my new hifonics subs. that will be a winter system for my ride so i don't have to keep my main subs in all year round. i really like it mostly because its has black carpeting.

great speaker wire

Excellent speaker wire an is true 12 gauge very durable and flexible gave my subs the power it needs I was impressed with it

Good stuff

Ok they say "wire is wire" if that were the case monster, streetwire and a few others wouldn't be so expensive. This review is based on response of professional installers. My guys were so impressed with how NVX makes my system sound.

The Box that Rocks

Appears to be fairly well built. Arrived with a little dent and a tear but its too little to bother with. Sounds nice but doesn't hit as deep as I would have liked. Small size however, leaves me some room for a couple of bags of groceries. Three stars for durability since I've only owned this for about a month.

Amazing Enclosure, Even Better Price.

Ordered this as my first enclosure, put two 12" subs in it and I haven't found a box that hits as hard and as clean as this one has. Will definitely buy from SonicElectronix again for my car audio needs.

great box

Very sturdy well built. Allows maximum bang. Great price under $60

Fast and easy great buy

I got my complete set up: 12" kicker subs box 1000watt Mbquart amp and amp kit. I have always installed my own equipment, I found it helpful that they have videos that covered some of the product they carry. There are a few shop's in Texas like Best buy and Custom Sounds that offer equipment. But the professionalism of the knowledgeable staff the price and the reliability made it clear that I wanted to do business with them.

solid sealed box!!!

Cant beat the price. But it is really very good box. I put two 12" hifonic,also bought from here, with a 2 channel 1000 watt amp.It really shook my rearview mirror in my '97 towncar. My brother loved it so we put it in his '92 prelude.Wow!!! You can hear him before you see him. Great buy!!!

works well

this cable is super durable!!! i recommend it its high quality just as stated... it is a little difficult to cut through and to size or strip but it has a double jacket allowing for long life and will take most any type of regular wear and tear

Great stuff

No disapointments at all great speaker wire I love Nvx equipment

Its a box

have kicker 12, they sound alright have some loose paneling in my car, so I'm having trouble getting the clarity I want. over all its a box and it works.

Great Wire

I ordered this because I wanted to try this brand. I was surprised at the quality of the product. Arrived fast to. I recommend this brand to anyone who wants good, flexible and reliable wiring.

Nice speaker wire.

I bought 25' of this 12 gauge speaker wire to wire up my mids and tweets. This is good size wire with a nice thick jacket on wire and was perfect for this application. I would recommend this speaker wire to anyone.

Great box

I have this box with 2 kickers 12 in back of a Nissan altima and they soundgreat. Would recommend to anyone and would definitely buy again. Sonic electronix is the best

Great Box

I ordered this for 2 crunch gpv's about six months ago because I didn't have the tools to properly build my own box. After six months this box is still holding up and works perfect with my subs.

Awesome "BANG" for your buck

I am on a budget, like most of us. I needed a nice looking box for a reasonable price. For $52.00 you can't beat it.
I loaded my 2 12" Alpine TypeS subwoofers in it. Mounted my amp to the back and they are still going strong.

bangn

Love it nice size for my subs still banging the same system

Solid Box

Ok so I bought this box because I wanted a quick sealed enclosure for my 2 JL W3's. The box is made pretty solid, true 3/4 MDF but the caulk job on the inside was kind of off but that's nitpicking. Haha after 3 weeks though of pushing my W3s the top of the box is leaking air. So not the best made but definitely a good pre fab and pretty cheap. Can't really complain. It is nailed together tho so yea..

It's a box without a hole

Solid sealed enclosure. Two of them barely fit in the back of my 02 Focus SVT 3 door. The binding posts are cheap, I tightened them as I would other posts but one out of eight wouldn't tighten because the thread tolerance is poor and it acts like its stripped, I can get some pressure on the wire but I worry it will come loose. Probably worth spending a little more money on a better enclosure but it works fine if you're on a budget.

very good sub box

The box is very good at 1.25 cubic feet. I'm running 2 12's with 800 watts rms and it hasn't shattered. Wish it was 1.35 cubic to accommodate for subwoofer basket displacement but it still makes makes subs hit ridiculously hard. Polyfill helps make the box seem bigger due to mechanics and the "Q" point. I really couldn't be happier!

Great Value!

I ordered this item for my grandson and he loves it.

Good value, good quality

Bought the MDFD12 for my son. Installing the subwoofers was very easy and the enclosure looks great. Highly recommend.

good box

It is a good prefab sealed box. I looks good and is functional.

good box cheap but good

this box is deferentially cheap but i put my 2 kicker comp 12's in there makes the sound good but i am thinking of getting a ported box soon, box is made with good material and i like it have it wired down to 2 ohms its sound good

Belva MDFD12

Belva mdfd12 12" box is good quality and good affordable price really good size an make my subwoofer sound amazing... 5 star

WOW Great Quality

I purchaced your Dual 12" sealed sub enclosure and added two Alpine R's and fosgate 1000w amp and WOW does not even come close, it Rocks. The quality of the box is really really impresive. The carpet in not the junk material I've seen in my other buddies combo's.
When you buy this box you know it will deliver and last a long time.... Sonic, keep up the good work!

Dual 12" 3/4" MDF Sealed Subwoofer Enclosure

If you are looking for a quality made box this is it !! I was very impressed with this box the moment I opened it.

The WOW factor was at least a 10.5 on the 1 to 10 scale. I WILL BUY AGAIN .

quality product

This enclosure is a well built enclosure for sq applications. I purchaced to house 2 CV vmax 122 drivers and the sound quality was almost rubbery? not tinny, never a crackle....fluid almost..... call it a well dampened sound with minimal distortion. just clean bass all the way into the 20s. made sounds i diddnt know existed. if you dont care how your music sounds and just looking for loud, look elsewhere. my only complaint, 11" cutout is too small for the vmax and the black carpet is difficult to follow a line with the router.

Great Sound!

i have 2- 12 inch Memphis audio 15-M3124D's in this box each putting out 2000 watts max hooked up to a MA audio HK10KA amp rated at 10,000 watts max. i have the subs bridged and it has way too much power going to them but the box still stands up. i would recommend that when you install your subs that you put some sort of foam stripping underneath the lip so when you screw it down you wont have and leaks at all.

Sleak, Sexy, Soundiful!

Its cheap, in price. Yeah, we see that. But let your worries go to rest, this is a GREAT BOX. Its well made, and put together great. Although they did use nails instead of screws, if you know what your doing, it won't slow you down. I have 2 12" Kickers in this baby, and pounds like a mofo.

Get this box. You won't be disappointed.

Best box for the price.

good box

I bought this box to house two Pioneer TS-W309D2 subs. Box has a solid construction. I could not feel any air coming from the seams.

GREAY BUY!

I put 2 P3 dual voice 12's in this box and they sound awesome .. cant beat the price.. the quality is there

Great box

Runs 2 Rockford Punchs in and no air leaks and bass is clear as hell. Any 12 would sound great in this box, would buy again if it ever goes bad.

Good product

Built very sturdy except for the terminals. Its easy to switch those out though so no complaints. Thanks Sonic!

A little trouble at first...

The whole was no the size it said it was. I happen to be a part-time handy man so I had a circular sander and was able to make the whoel bigger. Took about an extra 20 mins of work to mount the subs, but overall everythign worked out. No complaints about box. It is doing it's thing!

Great Wire

This is great quality, thick wire. It's very flexible and handles decent power.

By Corey on April 27, 2015 Verified purchase

good cheap starter box

i bought this box about a year ago for 2 of my infinity reference 1260w subwoofers. I have two more in a ported box. im pushing 350w to all 4 and I have to say I like this box more than the ported. you feel it more in the sealed box but lose a little on the db's but its worth it. the box is sturdy and hasn't showed wear a bit. its tuned in the lower 40's so you wont get stupid low with it but can get loud. I would recommend it to anyone on a budget or to lazy to build their own box. it comes with polyfill which is a bonus, the terminals on the back need calked but that's with about any box you buy. overall I like it and would buy again if I had to.

soso box!

Nice and built! really small box, has nice and deep sound... but the 12in kicker crvs need more space I think

Great box

Great box for the price and it can fit in any trunk.

great!!!!!

was just the right amount of space i needed for the 12's

ok so far

Installed this weekend, I did add a couple pounds of "pillow stuffing" since the box was a tad smaller then what I needed. I have noticed some flex already but im not suprised with the subs that are in it. I will add triangle shaped gussets and some "trim screw" to try and hold things together.

A sheet of real MDF (not the cheap underlayment) is $32, carpet and glue around $15 so for what they want for this its a good deal that just needs some minor tweaks.

Kick a**

The sub box was really good.

Okay

The box is leaking now. But the price and design was worth it all in all; it's just due to be resealed.

Perfect

Not much else to say besides great product. Shipped in only 3 days, and the pre-done polyfill is a great touch. My only comlaint would be that my car smelled like glue for a few days after I put this box in, but that's just nit-picking. Will definitely order boxes from Sonic in the future!

Sub Enclosure Review

Perfect size to fit my Infinity subs. Wish it came with mounting feet but can't ask for everything. Quality is legit for the price. Just your average rectangular box. Fit in the trunk of my 240sx which is pretty small.

Very high quality wire!

I needed some high quality wire for my new sub install. This wire did not disappoint. Very high strand count, flexible and jacketing was very high quality. Don't hesitate to use this in a high end install.

By Rob on December 10, 2023 Verified purchase

Great Box

Subs fit great and the construction was sound. Thanks Sonic!

GET WHAT YOU PAY FOR!!

This box looked great and felt very durable. My subwoofers wouldnt fit at first so I had to do some shaving, NO PROB. It sounded good for awhile and I loved it. After about two weeks, it lost its sound, went to check out the problem the whole front of the box had almost came off, Box was sealed very well, too bad they used nails instead of screws, would have been a very good box.

Nice Box

This box is pretty clean...nice black fabric, enough to hold the subs and gives them enough air to makes the subs bump and bump and bump and bump! Good buy at an unbeatable price. Awesome.

Great box

This is a great box. I prefer ported but my trunk is too small for it so I had to go with sealed. I'm still happy though. This had the perfect size for my 12s. Also the measurements are a little off. The box is a little bigger that the description said.

Great Subwoofers

Everything was going perfect with the two sub woofers i purchased. Great price & everything. But then someone stole my car & the woofers were in it. Anyways, they were GREAT while I had them.

Great

This is a great sub woofer box for the price it is heavy 41 pounds and it is sturdy. I have 2 12 kickers 600 rms 1500 peak and they sound great in this box hits lows and highs hard. I would say to any one buy it.

Okay Box

had to trim the 12" hole for my Sound stream PCO.12 subs they wouldn't fit at all. once I trimmed the MDF I love this box. they could have used spring term instead of screw though.

By James on June 1, 2015 Verified purchase

Great price for this box, very reliable. I put 2 lanzar 15s in here and they sound great, would highly recommend buying this and not wasting more money on a more expensive box

great box

this box is light weight. its made strong and fits every sub ive ever used in it.

nephew

My nephew loved this product along with the Autotik amp and Kenwood subs for Christmas. I even upgraded my old amp with a 4000 watt PZX Crunch amp to keep up with my nephew and his system lol

nice & clean

I replaced my old box with this 1 & man what a difference. My old box was 11 years old & I didn't realize it was falling apart & with this new box I noticed an instant difference. Its a great box for the price, it holds firm & can handle the full pressure of 1100 RMS

I did have to spray a little adhesive inside for 1 part of the foam & terminals were screwed in & not exactly straight & I also had to poke holes in the foam for wires but these things are no problem. The box is awesome & I will by more in the future

Good bang for the buck

It's tough to build a box for the price you can buy one of these. They are solid. I haven't had any issues with mine.

Good Quality

I would definitely recommend this box to a friend, Nothing like a good old professionally made box, I love the material that they put in it, it really adds to the sound.

Must Have!!!!!

This is an awesome enclosure. The price is very competitive as well. I am running 2 Rockford Fosgate R2D2-12 and there is no distortion at all. It is a very tight, clear sound. I highly recommended for anyone looking for a high quality low cost setup.

Good Sub Box

I like it, I think the covering looked good but I ended up messing it up trying to screw something into the outside. Otherwise i liked the box, my subs hit good in it.

ELW1214.2 BOX

Superb Box! Tight sounding bass, and best of all deep rumbling bass. Excellent for an audiophile like me.
Easy to install and use!

Belva 2 12" sealed enclosure with my 2 12" Infinity Kappas

Great box, holes were perfect sized and nice mounting depth! My triple voice coil Infinity Kappas with the 1600w amp SLAMS!!!!

Great 12's Box

This box is designed well. It is assembled, sealed, and carpeted very well. Speaker terminals are nice inside and out. Couldnt be any happier with this enclosure. Will use box with various subs.

Excellent!

Cheap and effective! This is truly one of the best boxes that i have bought for the price it is. Sounds great and made very well!

best box 4 the buck

Don't let the skimpy price fool you. This box is made very well and it's ready to go. The joints are already caulked and glued - so there is nothing more to do than mount you speaker.

It's not MDF(medium density fiberboard) like all the others, it is made from HDF; high density fiberboard. HDF boxes are typically stronger, stiffer, and lighter than MDF enclosures. The box does not require any additional bracing because of its density. It has a high an undetectable high frequency resonance and doesn't color the sound of your bass with unwanted buzzing or flexing. The HDF box is lighter than MDF because it has smaller fibers that when pressed and heated require less glue and resin to bind the fibers together.

The speaker terminals are screw type gold plated binding posts that will hold 12 g speaker wire easily. They screw into the enclosure for added strength and a tighter seal.

Just make sure that you do your math and pick the right sub for the cubic feet and stuff with poly fiber fill.

Awesome

Bought this for some 12" audiobahhn subs I bought 2 years ago still brand new in the box and hooked everything up in my 91 civic sedan to my
Hifonics BRX2000.1D Brutus Mono block and pure awesomeness. The box makes these subs slam. Highly recommend this box

Extremely well built

Insanely well built box.

Carpet job is top notch, Good quality carpet stretched perfectly over the box. All joints are glued and caulked well. theres no need for extra bracing here but you may add some 2x4's to reduce the airspace if needed. The gold push terminals are well sealed in place.

Hits low and hard with all sub's I've thrown at it (JL Audio 12W04's, Rockford Fosgate P312D4's, Kicker CVX12's and finally Alpine SWX-1242D's)

Don't be afraid of the price. It's a perfect price for a box of this caliber. Would recommend it to anyone.

Tuff Stuff

Nice heavy, good sounding box. I would reccomend putting some polyfil to "cushion" the backfire of the subwoofer, really helps w/any sealed box and totally makes a valuable difference considering it only costs about 5-10$ more. The box itself is well sealed and well made, the connectors on the inside and out are really easy to use and once connected your wires will stay put.

Good Product Good Box

This box is great for the low! I don't have nothing bad to say about this product.... The sound quality is awesome with this sealed box.

By alan on June 18, 2015 Verified purchase

this is a solid box

when i bought this box i wasnt really expecting much, because of the price an all but when i put my rockford fosgates's in it, it did sound great, and let me tell you im gettin 2 12 alpine type r next and im for sure going to be getting this box again.

so dont let the price scare you trust me you wont be disappointed

Good Box

I have this box with two hifonics subs, hooked up too a hifonics 1600 wat amp. Its a very good box and hits really good. Would approve to anyone.

Great Box

This is a well built box. Great quality carpet. If you want a good box without paying high prices this is perfect.

Your basic sealed box

Great box. Quality carpet job, all seams sealed correctly and well, and the terminals are strong and functional. Perfect basic box to make two twelve's hit perfectly. Just remember this is a sealed box, so it will have a differnet sound than that of a ported or bandpass box, but if u want a tighter hitting bass, this box if perfect.

Easy, cheap price, great quality

I bought this box for some Rockford Fosgate P1's and I couldn't be happier. The box is solid and produces some really good sound in my Audi.

Good quality

I was very surprised with the quality of this box. It was well made for it being a prefab box. The polyfil definitely gives the bass a deeper sound.

Excellent!

I bought this for my husband for his birthday and he loves it!

nvc 12 guage

man for the price that I paid and quality of this product couldn't get any better

By rafael on September 17, 2015 Verified purchase

title

Great box well made great value enough said ten word review

Just As Impressive As 4GA

I purchased this along with the 4GA NVX XW4BL20. You can see my 'With the Best of 'Em' review on that page.

This wire is on the same level as the 4GA.

It too has the nice wound bundles of wires, albeit only 3 for the smaller gauge, but the same quality is apparent.

The two wires separate with a little force, and it does not tear the shielding off either pos/neg wire.

Shielding is easy to snip and strip without losing (m)any strands of wire.

This and the 4GA variants have left a wonderful impression on me. Do yourself a favor and don't look any further for power/speaker wire.

By Robert on August 18, 2015 Verified purchase

NVX XWS1225

good wire , it works good, i like,it free with purchase

By Robert on January 11, 2017 Verified purchase

NVX= Quality. End of story

I'm currently switching my entire system over to NVX. I've purchased all the wiring, subs, box, and sound deadener and have yet to be unimpressed. Do yourself a favor.....just buy NVX and quit wasting your time and money.

Good

I bought two of the 12 inch type s subs and am happy with them. They arnt the loudest but are worth the money. Great for someone getting into the sub game

Sub box

Good product I would recommend this sub box to anyone that is looking for a cheap n quality enclosed

Good quality for the price

I have 2 12 pioneer ts-a30s4 and it's working great inside this box

good value

I bought this to put some ID Max's in for my daily. Build quality is good and the price was right. The box was good enough for me to buy another for some first gen JL Audio 12W3's that I was selling.

By Anonymous on July 30, 2018 Verified purchase

Alpine Subs

Worked great in my application, always have had good experience with Alpine products. The dual voice coil configuration makes it easy to order what you need to run your subs at 2 ohms.

Awesome

Such a good wire.... Flexible.... Nicely insulated and right on point with the price.

By Jonathan on February 10, 2020 Verified purchase

Solid Construction

I ordered this box for a pair of AudioFrog gb12d4-12, the box came with a couple of nicks from shipping. And didn't have the poly fill. Customer service was on point.

By Rob on June 8, 2017 Verified purchase

Good solid box

Its a great box... small compact and puts out great sound...A+ on this. Carpet matched my existing carpet turned out pretty great im happy with it :)

good wire

true sizing , double insulated , looks and feels good. also stays tight after being stripped back.

Great Product/Excellent Value

Very flexible for such a thick wire which made it easy to run through the car. Used this to rewire my subs, old wire needed to go. Subs sound cleaner and a bit louder. Great speaker, I will be getting the 16 gauge to run my mids and highs. Highly recommend NVX wiring of amy kind.

By Rizzlers on June 10, 2016 Verified purchase

Great sub and great price!

Alpine has never let me down. This subwoofer hits extremely hard. I have one powered by an alpine mrv-m500 wired at 4 ohms in a ported box. The amp is only at the normal output power setting and that's all I need. This sub is a great buy for anyone who wants the perfect amount of bass to not drown out the music completely. Don't get me wrong though, this sub is capable of doing that if you want it to.

great wire

this is an affordable wire that's great quality. The sound quality is awsome

By Gerald on January 12, 2017 Verified purchase

Surprisingly nice cable

Cable was 12 AWG as advertised. The jacketing consists of a soft-touch frosted rubber that's about an eight of an inch thick with a rounded side and a squared side. They are plenty flexible and the thick jacketing gives a little piece of mind that these would be able to handle moderately sharp corners under my carpet.

Really the only downside was splitting the pair with my fingers to separate the two cables so I could strip them. Doing that a dozen times got pretty old because they're stuck together well

great product

Comes with literally everything you'd need, fits perfectly in my 2014 dodge charger rt. Only think I had to buy in addition was a gauge to be able to lower the volume on the bass. Other then that I love it!

Yeaaaaa!

If u know me I like bass! I have 2 of these in the ground shaker 2 12 sqp
Box and it slams. I was surprised cause that's really nota big box. Imagine
A custom box! Other than that I have it hooked up to a brutis 1200 @ 2 ohms. Good subs.

Great value

Worked out great for me. Will be ordering a second

By Anonymous on September 9, 2019 Verified purchase

speaker

The item did not live up to my expectation because it arrived empty and damaged.
But for the price its a pretty durable box.

Cool wire

Nice wire good and thick it also is flexible enough to run making install easier good quality

By Michael on March 16, 2017 Verified purchase

subs

My boyfriend wanted these subs so i decided to buy them fir him hes happy with them

descent!

This speaker was second choice in regards of finding one that had high temp voice coils. I hooked it up to class d autotek1500d and dropped ohms to 1. I broke it in over three weeks and then as soon as she started banging good, it blew. It had great sound but maybe sealed box and hot summer day banging didn't go well? Either way can't really be mad it was good just not good enough for my application. Vented boxes keep speakers cooler just don't have that tight low I like so if you like sealed set up then get something that can handle the heat!

very satisfied

was very pleased with all products and pricing.i am very satisfied

Premium Wire

Very good product. I was looking for a #12 gauge quality speaker wire for my home stereo system. This worked perfectly. The length sent was as expected and delivery was fast and prompt.

Best subs around for the price

Started with a 10" alpine type E that is now in my girlfriends toyota celica. Bought 2 of these for my car and they sound amazing no matter what style of music im listening to. I couldnt say enough good things about these subs. Extremely satisfied with all alpime products, especially the type S subs.

It Alright

I have owned two of these both have broken on me. Thee first was my fault and the second was a factory issue but would not honor warrenty. They sounded awesome when they worked. I had only one hooked up at a time in a ported box with a alpine mrv500 amp.

bass shaking, hard hitting, deep low traveling bass by far!!!!!

I had just replaced 4 10" orion cobalt subwoofers in a 5 cubic foot box ported at 45hertz. with a sws12d2 subwoofer in a 1.5 cubic foot L vented wedge box tuned at 35.1 hertz. this thing hits as hard as my old 4 orion 10" and hits as low as the 4 10". for the price of this sws you get more then your money's worth!!! this sub slams hard in my hatch back!!! I've been thinking bout getting a sws15d2. don't get me wrong the 12 is loud n hits low. but im a bass head!!!! to the fullest!!!

Great value box

Budget-friendly box great build quality has 2 12 at 600 RMS power the woofer box holds the pressure would recommend this box.

By JORGE on July 14, 2020 Verified purchase

NVX XWS1225

this is some nice wire, very flexible and great price!!

By Anonymous on November 12, 2019 Verified purchase

Great wire.

Great wire. Good quality and true specs. I Only run nvx wire.

Awesome wire

Very good wire, but what is the purpose of the square edge?

By Anonymous on October 30, 2019 Verified purchase

Great Value

I would definitely recommend buyng this wires to hook up speaker to any size or watts amplifier for better sound to your system those wires are extra instead 16 gage core no lose conductivy for better sound I would buy again

By Mark on January 23, 2017 Verified purchase

Good Stuff

This is very good wire very flexable and easy to work with.

By Tom on September 17, 2016 Verified purchase

Fantastic Sub Box

A very well-built and nicely carpeted sub box, that looks great, and should prove to be very durable, as it is constructed with 3/4" MDF instead of thinner material of many other boxes costing more than this.

The black carpet makes more of an impact than the typical gray carpet, and the 5-way binding posts are much higher quality than the typical plastic spring connections normally found on sub boxes.

Very happy with this purchase, and would absolutely consider another should it fit my needs of enclosure volume. (It's not worth the extra time/effort to make a custom box, when this does the job just as well, and comes pre-lined with poly-filled and pre-carpeted)

By Kyle on February 26, 2016 Verified purchase

excellent budget sub

Great service from the guys at sonic electronix as always. Sub is one of the best bangs for the buck. It sounds great paired with my hifonics amp. I can't imagine how it would sound if I built a tuned box

Dual 12" 3/4 MDF Sealed Subwoofer Enclosure (Belva MDFD12)

The Sealed Subwoofer Enclosure
(Belva MDFD12) that I recently purchased
from Sonic Electronix is the perfect completion to my recently installed car audio system. Sounds absolutely fantastic, I have no complaints and I will shop at Sonic Electronix again. Infact I'm shopping their
again right now for a subwoofer remote
control add more bass switch which they
had in stock for my kicker monoblock amp
CXA1200.1 THX Sonic Electronix!

By Greg on November 16, 2020 Verified purchase

Very nice

This wire is top-notch. I’m not an expert, but the quality is the best I’ve seen.

By Wayne on July 31, 2020 Verified purchase

Great deal

Love this box worth every penny really solid box everyone should buy it

Great Budget Box!!

Ordered my box and had it at my front door in 2 days! Great box. Its very well built and pure mdf and thick mdf wood. Nice carpeting. Only down fall i see is there was no poly fill and terminals are on sides instead of rear. I thought it was suppose to be this one pictured and both are the same numbers but different box but i am still very very pleased!

By Norman on November 29, 2017 Verified purchase

Sturdy enclosure

This is a very well constructed box, well sealed and solid. However, mine arrived new in the box and every corner had the carpet worn off and bare wood showing. Also, mine was not lined with poly-fil and the terminal cups were on the sides rather than in the back as it appears in photos- no biggy but that did influence my decision as my install would have been a little "cleaner". All in all it sounds great and seems extremely durable.

By ron on August 20, 2017 Verified purchase

Awesome with my dual JL 12w6v2's

Purchased because I needed a new box for my JL Audio W6v2's. Sounds great! Great solid construction, nice that it's already lined with polyfill, no air leaks and the black carpet looks great. Can't beat it for the price and sound quality with my subs in it is excellent. Guess it would be nice if the terminals were pre-wired but I soldered my own wires in. Love it, would buy again Box fits perfect in my '13 Accord trunk

By Jason on March 8, 2016 Verified purchase

great box

Perfect box just what I was looking for. Fast shipping

great sub for the price

The sub works great with my 1200 watt pioneer mono amp, and it thumps hard even when not using 100% of its potential. I would recommend a lower wattage amp, because my amp blows out the sub.

Perfect fit

Great price, excellent quality just what was needed for my audio project

By Bobby on August 23, 2022 Verified purchase

Great value

Great box for the price I have two 12" pioneer champion series 1400 watts speakers in this enclosure and they sound great thanks sonic for another great purchase.

By courtney on March 9, 2020 Verified purchase

important quality connections

quality made, flexible, and not to mention nice looking OFC speaker wire. I can't complain about this product.

By Anonymous on October 25, 2018 Verified purchase

So for its been great

Sounds better than I thought it would I have two 12 rockford fosgate p3 and they sound great and the price was a great deal

Great deal

The box fit great in my trunk and sounds great

Tight Bass

I always try new subs in a sealed and then ported box. This Belva is a great value and a solid , sharp looking sub box.

By Tom on August 19, 2017 Verified purchase

Wire

Good speaker wire use it for my car audio looks like it was made with good material would recommend 9/10

Very well built box!

Nicely built and good for breaking in any subwoofers. Highly recommended if you like that nice clear sound that cam hit that tight bass.

By Anonymous on October 3, 2018 Verified purchase

Great bang for my buck

I have to LMFAO at all those bad reviews bet they never realized 3 weeks. At lest before you go n turn up amp. Today is Aug 19. 3 weeks ago I bought n installed (DIY). My amp n remote were both turned to 2 gain will EVERYTHING ELSE was set 0. Yes at first could not hear it. But in long run worth it. By 5th day at 2 gain was raddling my mirrors. I only got one these bad boys. Due to out stock. I can't even fathom 2 these. Guys going.BTW I still haven't messed with amp or any settings. Pounder on that for awhile.....

By John AKA WhoFNcares on August 19, 2017 Verified purchase

Great wire

I usually use knukonceptz oxygen free copper wire, but this wire came free with my subwoofer enclosure I ordered. The insulation is really nice, and the black/blue color coding is so much easier to identify than the color coding on knukonceptz speaker wiring.

Oxygen free copper, loads of strands, quality insulation and look. Would easily buy this stuff again

By Ryland on July 3, 2016 Verified purchase

Box

Looks good and easy to install speakers in. Made heavy for durability

great, pretty sub.

this subwoofer is great on my phoenix gold 300.1 at 1 ohm(makes 340 rms at 2 ohms) and it likes high 30 hz to 45hz. recommend to anyone who appreciates sq and a little bump to make your music come alive.

Excellent wire

Very good quality wire...I am hooked on NVX I have purchased speakers, subs, amps, equalizer, installation parts, and wire so far every NVX product has much exceeded my expectations. I'm just waiting for them to start producing head units so I can get one and then my entire system will be exclusively NVX! You hear me NVX?!

Subwoofer box

It looks really sealed and no air will leak and it looks very durable

Great Value

I purchased a sub and received the wire as a bonus. It would still be a great deal at regular price. It is ofc speaker wire . It is extremely flexible and easy to work with . NVX has not failed me yet with any product of theirs that I have tried so far.

By ken s on January 12, 2018 Verified purchase

Good value

I would reluctantly recommend this box. The one I received was already slightly damaged in the corner with carpet coming away from some of the seams in the corners even though it was brand new from eBay.

Nice wire

I needed new speaker wire for my 2 sub boxes which i was putting 1500 watts thru and didn't want any resistance.

Great wire

This wire has a tough sheath but amazingly flexible. Good wire that works great.

Great subs

where to began.. i have 2 of theese wired in 2 ohms powered by a ZRX1800.1D in a ported box tuned at 35 and it rocks my trunk i have a 1977 chevy caprice so i want 2 more (trunk is big enuff) and the amp can handle 4(so why not if you wanna B herd for a block or 2.. two of these is all you need

NVX Top Quality

NVX Is The Shit. 2016 Wait Till You See This Full NVX System In A Slammed F250 SD

By Bryson Customs on April 11, 2016 Verified purchase

Lotta bass, little money

I ordered 2 of these subs for my senior project and boy, i was definitely not disappointed. I built a sealed box to the manufacturers specs and machined it out on a CNC router machine. Whoever said sealed subs don't hit hard definitely hasn't heard these baby's! You can feel the bass in your chest and there's great response with a sealed box with really tight sound. I wired each subs coils in series, to double impedance then parallel together to cut it in half to bring the final impedance to 2 ohms. Im using the hifonics 2000.1D amp tuned to run at 900w rms. These subs really bump for a great price, all the kids say they hear me coming up the school driveway! if you are looking for an ear piercing bass i would build a ported enclosure because im sure these things would perform great in that scenario too. But 2 of these subs in a sealed box tuned to max potential is perfect for what i wanted for daily driving, cant even see out the rearview! these things perform great in a sealed box and have been running cool, they definitely handle the power efficiently. Alpine all the way! i have been recommending the type s's and type r's to all my friends now, these are some of the crispest subs and the tightest bass ive ever heard. I cant speak to the durability because i've only had them for 2 weeks, but after driving for a while i stopped to check how they were doing and the cone wasnt even warm after bumping for hours at 900w between the 2 subs.

Great Value.

This box is awesome for the Price. A little heavy and you must have enough room. It will fill a trunk or back of a SUV. I have two JL 12's ,which makes this a combination that beats. Low, long, stretched about bass that lets the neighbor's; who live a mile away, know you're coming.

By Joshua on February 25, 2023 Verified purchase

NVX XWS1225

Thanks, sonic for fast delivery and for a great price.

By Casey on March 22, 2020 Verified purchase

Exactly what I was looking for!!

It fits into my trunk perfectly and is the exact same size that I was looking for.

By Marcus on March 2, 2020 Verified purchase

Nice box

I'm always reading reviews and they say good or bad but this subwoofer box is awesome I've put cheap and expensive subs in it the BOX MAKES THE SUB!! this is a great box at a great value very well built hits the lows and high nice only down side is terminals are a little cheap

By Anonymous on March 30, 2019 Verified purchase

Great box

I have 2 jl w3v3 subs in this box. And subs hit hard great box good value

By Anonymous on March 6, 2019 Verified purchase

Dual 12" 3/4 MDF Sealed Subwoofer Enclosure (Belva MDFD12)

Perfect fit for my car.Love the carpet cover.Would recommend you carry gray carpet covered boxes.

Great quality

For the price is a very good quality enclosure, very solid and well made

Really nice box

I put 2 mtx sub and the bass is really deep,the best, the price is really good.

By Mag80 on November 6, 2016 Verified purchase

GREAT SUB BOX

SLAMS THE BASS FOR 2 12" SUBS HARD AND GREAT. WELL WORTH THE MONEY AND THE QUALITY THAT ITS MADE FROM WOULD BUY AGAIN FOR DIFFERENT CARS.

By Michael on July 9, 2022 Verified purchase

Dual 12" 3/4 MDF Sealed Subwoofer Enclosure (Belva MDFD12)

Made out of high quality mdf nice tight bass highly recommend this box

Dual 12" 3/4 MDF Sealed Subwoofer Enclosure (Belva MDFD12)

Solid product. I wouldn't put a subwoofer heavier than 30-35 lbs each in it thought. It's lined with polyfil so you'll have to cut a small hole where the terminals are but other than that it's a pretty good box for the price.

Dual 12" 3/4 MDF Sealed Subwoofer Enclosure (Belva MDFD12)

Purchased this enclosure for my son's first system in his '16 Cruze. Great alternative to building a custom enclosure. Great match for the ID12s I had leftover from a previous system. Also, as always, Sonic Electronix has the best prices and ships fast.

By Anonymous on January 30, 2019 Verified purchase

Best Value!

This was already the best deal for a 3/4" MDF dual enclosure I could find, everything else in this range is 5/8".

For the price I wasn't expecting much.
However When it arrived found it is of good build quality, with decent carpet.

They already lined the inside with polyfil, more added value.

Then to top it off, found it has really nice gold plated screw type wire terminals. Better connection and added peace of mind that connections will not come undone.

This is probably the best deal/value on the internet for a dual 12 enclosure. Probably why it's backordered at time of this review.

Very Happy!

High grade cable!

NVX has impressed me many times and this cable is no different. High quality cable and overkill for what I need, but I like overkill.

By Alex on December 5, 2022 Verified purchase

One of the best sub wires out there

Made of very good quality and strong materials. Works great with my RF T1S1 subwoofer.

By James on February 4, 2023 Verified purchase

Subwoofer enclosure

Good quality would buy again
Good prices
Always love sonicelectronix

best 12 for the price

I order this sub thinking it be OK till I git a better on but when I built the box for it and got it playing its really loud and clean sounding it sounds good in 1.70 cubic box with 4 in port that a foot long and mount the sub up side down works better btw, but I got told a lot that its loud

By calvin on August 20, 2015 Verified purchase

Larger than what Crutchfield installed

Like the title, had a previous 500watt sub installed with 16awg low voltage wire and this filled the void I was missing out of my subwoofer.

By Cory on February 8, 2024 Verified purchase

Great value

Good product low price and fast ship
I love it

Great product

ALPINE is a great product period. Buying a great product at almost half the cost of a retail store makes ur experience even better!

Great sub

For the price, u can't beat this sub. The best bang for your buck

Superior quality!

This wire is excellent, top quality coming from Sonic Electronics house brand! The strand count and craftsmanship is the upper echelon when it comes to car audio wire!

By ColbyG on May 12, 2024 Verified purchase

Awesome wire for awesome price per foot

Everywhere I price for 12 gauge was just getting out of hand. I needed some for my jl subs I got. Let say separating them to single strands was a breeze for my install and jacket was nice and thick for protection flexibility was amazing to bend them pretty much into a u shape if you needed to. And ofc selling point then that cca.

By michael on December 7, 2024 Verified purchase

Quality 12 gauge.

Real 12 gauge OFC cable. great value for the money. I typically use KnuKonceptz and the nvx is just as good.

By John G on November 6, 2024 Verified purchase

Great wire

Really nice quality for the money

By Ron on April 13, 2026 Verified purchase

Great 12guage wire!!

Wire is flexible and for sure 12 gauge wire . Lots of strands !!

By Luis on September 19, 2025 Verified purchase