Customer Ratings & Reviews

Quality box

I have a Fi Q 15 in this box and it hits harder than my last 2 Rockford Fosgate p3 12s. Box is big so make sure you measure out the trunk and keep in mind that you have to angle it to get it in the trunk. This thing kills the lows, i love hearing how detailed it is with the low frequency tunes

By kevin on December 1, 2016 Verified purchase

Great enclosure

this was the perfect box for the right price and my sub sounds amazing.

VERY Nice!

I put a Rockford Fosgate P3D4 15 in this box and somehow I got this box to fit in my 2016 Kia Forte, I'm not sure how I'm going to get it out..LOL Anyways this oversized box makes my 15 sound like there's 2 15's in my ride! This box is well made right here in the USA and I would purchase Atrend again in the future!

By TWP-Mentor on October 7, 2016 Verified purchase

Perfect size and sounds great

Perfect size and sounds great, I use a RS gold 15 sub with 1000rms. It hits hard in this box!

By Anonymous on September 10, 2019 Verified purchase

Huge Box, High Quality, Tuned Low

I have this in a 2003 Honda Accord and it barely fits in the trunk. Very well built box, I used threaded inserts to mount sub. Make sure you measure well before ordering this enclosure. Enclosure weights ~80lbs so you may need a hand installing it after you add the subwoofer.

I have recommended this to some friends already that are looking to upgrade. I can't measure tuning but I will say it sounds like it's really 33hz.

By Anonymous on May 2, 2019 Verified purchase

This box is way better than their “SPL” box.

Got this box in about 2 weeks ago. Very skeptical of prefab boxes and if they are what they say they are. Well this box IS closely tuned near 33 HZ. I have one CVX 15 which is getting about 800 watts rms and it loves it. The internal volume is about 4 ft. Go to their website if you want more details but order here because Sonic ships and I’ve never had any problems with them. Anyway this box is the shit for a prefab.

By Anonymous on May 21, 2019 Verified purchase

Huge

This box is no joke. Lined the inside with a liquid fiberglass polymer for better sound resonation. Worth the buy for a prebuild.

By Anonymous on November 29, 2019 Verified purchase

It was worth the price

The sound of the box with my HDC4-15-A is a great sound but of course you pay for what you get it was in great condition still holding up mdf is extremely thick love this box but of course there are better you just need to spend a lot more money but you definitely get your bang for your buck.

Really clean box

This Sundown SA V2 D2 hits hard in this enclosure. I love it. The service was great! Shipping was fast. Get one…. Go on now getcha one.

By Billy on August 5, 2023 Verified purchase

Good money spent!

Wasn't sure what to expect for the price, but, I was very surprised and satisfied with the sound and the bass produced. I'm running a NVX 154, 1k rms amp, and it's got great loud bass, and accurate bass for all Genres.
Only con is the face plate could have been doubled,(single face) but so far it's holding up well. Would definitely order again for the value and bass produced.

By ed on December 22, 2019 Verified purchase

very solid box

very solid box. works great for my DC Audio 15 inch subwoofer! would by again

By Josh on October 24, 2025 Verified purchase

Great box

I've had one of these boxes for about 8 years now. I bought it to put my old Rockford Fosgate Power HX2 15" in it, and it's been pounding ever since. It absolutely kills it on the lows, I used it in my old Isuzu Rodeo for several years, but have been using it as the subwoofer for my surround sound at home for a little bit now, running it off of an old Rockford 400 which is powered off of a PowerMax power supply. It's unlike anything else I've ever used inside. It is ridiculously loud. So I give this box a thumbs up for both car use, and indoor use. Overall everything about the box has held up incredibly well and after 8 years is still in tremendously good shape. It's better built and has been more durable than any other pre built box I've ever messed with.

Great product

Shipping was a breeze, Product looks amazing. Spec’s were right on point. Sonic Electronix is my One stop shop.

By Julio on September 25, 2024 Verified purchase