Showing 45 reviews for Belva Sub Box 1SV12G (Gray)

Customer Review Summary for Belva Sub Box 1SV12G (Gray)
Average Customer Rating is 4.6 out of 5 stars:
4.6
based on 45 Reviews
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Rating Distribution:
5 star:
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69%
4 star:
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24%
3 star:
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2%
2 star:
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4%
1 star:
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0%
what's this?
Average Attributes Rating:
Durability
4.7
Value
4.8
Features
4.6
Design
4.6
Usability
4.7
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Quick Comparison:
Most Helpful Customer Reviews:
December 20, 2010 Great Box!
4 of 4 people found the following review helpful:
Review by
Luke from Minneapolis, MN
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Value
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This is a nice box for the price. I normally build my own boxes but I didn't have much extra time and it is too cold out to build one anyways, so I bought this one and I'm sure glad I did. Realistically to buy a sheet of MDF, spray adhesive, bottle of wood glue, nails, and carpet costs about the same as this box and it is already made. Sure it is prefab, but its a very good prefab enclosure. This is real 3/4 inch mdf and the port is tuned pretty low too. I would guess like 34-36 Hz or so. Very solid construction and rounded off port on the inside. Carpet looks great. Terminals are nice too, although they are plastic fasteners, they will hold up just fine. I have a Phoenix Gold rsdc in this box and it slams! I can feel the bass pounding my chest. If you want a nice loud box, this is the box you want. Exceeded my expectations by far!
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September 1, 2012 decent box
2 of 2 people found the following review helpful:
Review by
Murad from Novi MI
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i bought this box for the newest alpine type r.... lets say it sounded decent but not good enough for me, i have had many sound systems and this didnt sound so good with the type r..... if your decide to get a type r id go with a 3.0 cu ft box tuned 32-38hrtz for the best deep loud sound quality
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September 30, 2010 Great Solid Box
2 of 2 people found the following review helpful:
Review by
DJ JonnyB from Sacramento, CA
Overall
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Value
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Usability
This box is built very well. It's perfectly tuned for the Alpine SWR-1243D Type-R that I also got from Sonic Electronix. The SPL of this combo is ridiculous in the trunk of my '09 Civic Si Sedan, and it leaves more than 3/4" of my trunk space left for other junk. Definitely recommend. With a set of banana plugs also ordered, I still only spent less than $225 which includes the price of shipping for these three items. Speaking of which, I ordered in the early hours of Tuesday (switching over from Monday) and I got the these three items delivered to my door by 11AM Wednesday! There's no way you can find a better deal than that! Now all I need for this combo is some serious Dynamat to keep everything from rattling apart.
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August 10, 2010 1SV12
2 of 2 people found the following review helpful:
Review by
Jake from OR
Overall
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Value
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Design
Usability
I bought this box for an Alpine Type R 12. I usually build all my own ported boxes but I decided to save some time and buy this one. The box is built from quality 3/4" MDF, the carpet looks great, and the seams are well caulked. What you really should know when buying this box, it is around 1.5 cubic feet net, and tuned to around 35hz. A little small for most 12's in vented applications, but the 35hz tuning was a pleasant surprise. Most prefab boxes I've seen are tuned >40hz and can't quite hit the low notes. Overall, definitely a great value and a decent design.
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March 24, 2009 THE BEST
2 of 2 people found the following review helpful:
Review by
Mario from Bakersfield, CA
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Value
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Usability
This box is the best if you want a ported box. It just has everything you need for a well cheap price but the box is just amazing. I put my kicker cvr 12 and that thing bumps, am definitely buying another of the same box for my other kicker.
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March 22, 2009 Great Speaker Box
2 of 2 people found the following review helpful:
Review by
jason from Silver City, NM
Overall
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Value
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Usability
Makes a big difference in the bass. This box is good for a smaller type of trunk.
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March 9, 2009 well built
2 of 2 people found the following review helpful:
Review by
Greg from Conroe, TX
Overall
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Value
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Usability
this is a very solid, well built box. the box is sealed well at all seams also and made of good quality mdf. I have a kicker cvr in it and it sounds great. great choice for a single ported enclosure. can\'t go wrong. by the way, i think it has great binding posts. good value, it won\'t disappoint.
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February 12, 2013 Bad.
1 of 1 people found the following review helpful:
Review by
basshead93 from conway, arkansas
Overall
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Value
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Design
Usability
I bought this box a while back and one of the speaker wire terminals is loose causing the connection to be weak.. its been loose since I got it but it just recently started causing problems.
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May 26, 2010 Nice product
1 of 1 people found the following review helpful:
Review by
Amerskier from Wenatchee, Wa
Overall
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Value
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Design
Usability
This box is a very nice box especially for the money. Gives a crisp clean sound and doesnt matter what type of music you are listening to.
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December 20, 2009 Great
1 of 1 people found the following review helpful:
Review by
Gentriginus from Walnut Creek, CA
Overall
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Value
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Design
Usability
I bought this box for my Rockford P3. The box takes up half of my trunk but it slams my sub. You can't find a better deal on a ported box like this anywhere
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July 10, 2014 Outstanding quality & Price
Review by
Trent from Bellinham, WA
Overall
Durability
Value
Features
Design
Usability
Would recommend, sturdy construction with insulation.
Improved bass quality, w/new box I could hear bass notes that were missing before.
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May 25, 2014 Solid well built box.
Review by
Elguanaco from chicago, IL
Overall
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This box is great. ! I have a Power Acoustik GW3-12 in this box and it really pushes some air! All my mirrors are blurry while im driving nice clean bass
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May 4, 2014 Good Box for Cheap
Review by
Mark from Portland, OR
Overall
Durability
Value
Features
Design
Usability
I needed a box for a C2 Audio Threatcon 4 subwoofer. C2 cuggests a box near 2 cubic feet tuned to 35 hz. This one is tuned to 36 as a I recall so it's pretty close. It's nicely constructed. Wish that it were slanted so that I could put it up against the rear seat of my car and that it were tuned a bit lower. For 35 bucks I couldn't build it for less.
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April 29, 2014 Sick box.
Review by
Andre from Burlington, ON, Canada
Overall
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Value
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Design
Usability
It's pretty massive. Carpet matched my trunk which is a win. Screw terminals are not the best but they work.
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April 27, 2014 Solid box for the price!
Review by
christopher from Humble, TX
Overall
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Value
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This is a good solid box for its value, very study and looks decently sharp. obviously there are better boxes out there, but for this price you cant as for much more. i'd recommend it to anyone trying to build a system with out big spending. great product, thanks to sonic for low prices and super fast shipping as always
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April 19, 2014 great box for the price
Review by
Christopher from Reno, NV
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Value
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Design
Usability
It sounds great. and looks nice. fits well in my trunk also
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April 15, 2014 great
Review by
billy from canton, TX
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Design
Usability
hooked it up to re audio srx 12 and it sounds great
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April 15, 2014 works great
Review by
bottwell from dallas
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Design
Usability
Hooked it up with an re audio srx 12 and it sounds great very very happy.
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March 31, 2014 great box!
Review by
frank from guadalupe, AZ
Overall
Durability
Value
Features
Design
Usability
When I got the box, it was broken at the face plate by the port. It was in the bottom corner. It wasn't too bad so I decided to drop the sub in anyways.
I have an nvx sub in it and it sounds really good. The lows are deep.
Overall it's a good quality box and sounds great
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February 9, 2014 Sounds great
Review by
Stevie from Biloxi, MS
Overall
Durability
Value
Features
Design
Usability
This box sounds great with my alpine 12. The terminals were easy and the box is put together well.
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January 8, 2014 awesome subwoofer box
Review by
d.flo from Aurora, IL
Overall
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Value
Features
Design
Usability
This subwoofer box is great and produces a lot of loud bass. However it is huge so make sure you have enough room.
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March 23, 2013 great box
Review by
MARKLAR from clallam,wa
Overall
Durability
Value
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nice well built. only thing it lacks is being pre wired. so you might have to spend a few bucks on connectors. but it is nice. buy it

im running a dvc 12inch pioneer champion series off a fli acid amp its 600watt rms 2ohm mono... bumps
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August 17, 2012 Great buy!
Review by
dennis from port saint lucie, FL
Overall
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Value
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Design
Usability
Matched the air space to my boston g2 12'' sub have no complaints at all
sturdy, clean !
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March 3, 2012 Great value!
Review by
Pistol p from Winnemucca, NV
Overall
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Value
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Design
Usability
This is a great well built box. I have an RE12" sub in it and it produces the sound that I wanted. Great box recomend to all!
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February 21, 2012 Great value
Review by
oliver from lewisburg, TN
Overall
Durability
Value
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Design
Usability
Ive had this box for a good 6 months and havent had any problems. Very durable and built right. Im running an RE 12 and an RE amp in a tahoe and this thing slams! It would be hard to build one for this price. Only complaint i have is that it stinks like they heat treated the mdf or something. My truck smelled like a forest fire for a good month or two.
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February 14, 2012 pleased
Review by
will from sturgeon bay, WI
Overall
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Value
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Design
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I bought this to go with my orion xtr pro. it makes the deeps better mids louder and highs annoying. Make sure if you buy this product to tighten the connectors a little more. i put my system together but damn near broke one of the connectors when tightening by hand. Other than that i am very pleased with this product. Sonic Electronix never fails me! I recieved it in three days from KY to WI!
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October 3, 2010 Sub Box
Review by
Patric from Oregon
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Great box! Excellent quality, especially for the price. Have had it for 6 months now and it looks like new. Very impressed for how cheap the price was!
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June 15, 2010 nice box for good price
Review by
matt from englewood, OH
Overall
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Design
Usability
product is durable, produces good sound and is a very good deal
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June 14, 2010 decent sub box
Review by
William from Livermore, CA
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Bought this box for my son and put a sony 12 and visonic amp and it hits pretty hard and very loud but not as tight as the sealed box he had so he loves it because he's a teenager !
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June 10, 2010 great box
Review by
Maxwell from carmichael, CA
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This box is great and you wont find such a nice one at this price anywhere.
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June 10, 2010 single 12 inch vent ported box
Review by
ian from Antelope, CA
Overall
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Value
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Usability
Bought this box a while back and must say for the price its a great box. Ive looked at other higher end box's and they are way over priced. Good construction and seems sturdy. I would recommend this box to anyone who wants a single sub system.
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April 20, 2010 works well
Review by
John from WA state
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works well with my alpine 12". installed the sub into it myself, very easy. good value. go sonic!
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February 22, 2010 great buy
Review by
DWES415 from San Mateo, CA
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my brother bought this for his kenwood 12. it sounds like he has 2 12s. the crazy thing is he is only pushin 220watts rms. box makes all the sound. get this if you need a great box
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February 12, 2010 Not to bad but could be bigger
Review by
Fred from Findlay,ohio
Overall
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Value
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Usability
Got this box to house a American bass xfl 12". I needed a bigger box but I have a small trunk so my options are limited. my 12" beats in this box just not at full potential. good box for pre-fab
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February 1, 2010 Great Box
Review by
Seth from Santa Clarita, CA
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The works perfect. The box is more durable than i thought it was going to be. Just the right size that i needed. I even put some poly-fil inside to enhance the sound of the subwoofer. Great price for a great box!!
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January 31, 2010 Great so far!
Review by
CeeKay from Bismarck, ND
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Value
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Usability
Bought it six months ago to house an Adire Brahma 12" (old-school). I needed 3/4" MDF and around 2sq.ft., ported... Even with shipping it was about half the price of buying a similar box locally, because all my local shops are rip-offs...Sonic can't be beat for price!

So far, everything is great! Only thing that's failing is the window trim on my Pathfinder. X)
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October 11, 2009 Worked well
Review by
B. Blaser from Wisconsin
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Usability
Was used for mtx 9512-44 worked well for what I needed it for...
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July 4, 2009 One hell of an upgrade
Review by
Aaron from Lubbock, TX
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went from sealed .8 cubic foot box to this ported box for more volume. the difference was night and day. i have scaled back the gain on my amp and dropped the sub volume to 0 on my deck, and this box still provides so much volume i'm afraid the back glass will fall out. simply unbelievable. fyi, alpine type x and hifonics bxi1606d, 1100w rms @ 2 ohm.
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June 3, 2009 not the best for a type r
Review by
bass head from san diego, ca
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its pretty loud but tends to sound kind of sloppy at some notes. if your new in the audio game i would get it but i wouldnt recommend it. if you want to save a little money id go with a sealed 1.0. on the other hand if you want crazy loudness id go with a building your own ported box or you can find a good prefab tuned at 32-38 hz. but im happy with it but soon to change box.
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May 6, 2009 great box great price
Review by
Elijah from Hill City, SD
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u will never find a better ported box for this cheap. it is very well built. sadly it is currently serving as a nightstand in my bedroom due to the sub no longer living there lol
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April 15, 2009 box
Review by
Joey from Coon Rapids, MN
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this is a great box, great build quality. great port flow and absolutely no port noise. great box
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March 16, 2009 Great box
Review by
Bob from Mesa, AZ
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Usability
I put an Audiobahn Alum12X in it with a 200 watt RMS amp. I had to widen the hole a little to get it to fit. It is nice and loud. I put it in the back of my Honda Element so the port fires under the rear seat toward the driver seat. For the cost it cant be beat. It would have taken me hours to put one together. What a time saver. This is the first box I have ever purchased. I usually just make my own.
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February 15, 2009 Okay enclosure
Review by
Chris from Cuse, NY
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I bought this box because it was a lot bigger than the previous box I was using. I have a Pioneer Premier TSW3001-D2 in this box and it still needs more than 1.8 cu ft to show its true potential. Overall its a good box and it does have good sound quality, but I am not hitting any of those low notes with it that I really want.
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January 29, 2009 A+ product
Review by
Christopher from Cheyenne, WY
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Fast Fast shipping. For all you guys that are looking for a clean box with great value and durability this it. I'm using it to support my 12" Olympus Series Dual 2 ohms Subwoofer (OLM-1612). Buy it !!!!!!!
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September 16, 2008 Awesome box
Review by
Jonathon from Greenville, NC
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Looks attractive, feels sturdy, wasnt expensive. Perfect for my memphis 12. I actually ended up with the exact box except black.. so i assume the picture is wrong, although i'd rather a black box anyway.
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