GS-30HZ112B black 12" 30-hz single competition ported sub box

I put my BTL NEO in this box and it is making it hit lows like never before. Now I have to deal with all the parts in my Expedition XLT shaking.
I love this box.

Very poor costumer service can’t get them on phone or get an email reply.

Very poor costumer service can’t get them on phone or get an email reply.

I have been in car audio for many years so please trust me when I say that this is the best quality best made prefab box I have ever seen in my life and the things that this enclosure can do with your subwoofer is unreal. When I ordered mine I had them cut a 12in square out for my Q class L7 Solo-Baric and before I show people what I have that usually guess I have to 15" Subs in my vehicle! You cannot go wrong this is a complete winner!

By far the highest quality best made engineered prefab subwoofer box I've ever seen in my life and I have been in car audio for many years, it truly looks like a custom-made box as soon as you lay eyes on it in the things this box can do with your subwoofer will blow your mind. When I ordered mine I had them cut my sub hole for a square kicker Q class L7 12 only pushed by a kicker dxa 1000 amp and people always think I have two 15 in subwoofers in my vehicle it has the lows that hard! I don't work for groundshaker and I didn't get a deal on the boxer saying this I just know that no matter which way you go this box is a winner

BEAST!JUST PUT A JL AUDIO 12W7AEV3,WITH A JL AUDIO XD1000/1 AMP,AUDIOCONTROL LC2i AS WELL.AND LETS JUST SAY MY SYSTEM GETS LOWER THEN LIL JON PLAYING LIMBO!LOL ?#BASSHEAD.

GREAT WORK GROUNDSHAKER!

Just ordered mine for a 12 inch kicker q class dual 2 ohm cant freaking wait

Im confused. Is it made out of high density fiberboard or medium density fiberboard or both. It says "high density mdf wood" but mdf means medium density fiberboard..so its high density medium density fiberboard?

this enclosure is amazing. I’ve had 2 different subs in mine; initially a soundstream T5.122 (which sounded fantastic on a pioneer GM-D9701) then moved up to a Skar VXF 12, along with a Taramps MD1800.1. with my current setup it’s probably the best sounding single 12 I’ve ever heard, this box is no joke it can get lowww. well worth $200, just wishing I’d have spent the extra $50 for the dual 12 version

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I purchased the GS-30HZ112B in March. It’s the best box I’ve ever purchased for the money. I wish I could have the same quality box to fit the rear of my van. It’s too big and I can’t lay down the rear seats. It’s made to lay flat into a bed.

Just recieved my enclosure today. First impressions Good looking box, not to heavy good carpet job. I bought this for a Kicker Q class 12, Perfect fit. I went to my favorite bass tracks and this enclosure is tuned right for low Bass. I noticed that 45Hz didn't hit as hard. But that's OK. This is the most affordable enclosure I've seen online and it is good build quality. Fast shipping and boxed up like a tank great job!!!

I just bought this item on Thursday of nov 11 got it today nov 13 I got it for my kicker comp q 12 2ohm dual and I gotta say box is very well made very sturdy came in great shape no issues I hook it up and everything and I gotta say I put it in my highlander it’s bigger then expect but I mean it’s a competition box with a competition speaker you gotta go the right way and man does it hit hard holy crap man it’s very good really recommend this box definitely worth the money don’t go to the shop locally they were trying to charge me 389 for the same one but definitely recommend it

This is a tough box , im very impressed , I have a 2800 RMS , DB 3012 , and a 4000 watt amp hooked to it and it slaps this sub and there isn't any flex in the box it is a beast if you have any doubt don't it is the best prefab box for the money imo !!

Will a subwoofer with the cut out of 11.09 inches work in this enclosure? I have a sundown ZV5 12, and I am trying to find an affordable enclosure for it. Thank you in advance, for any/all assistance in this matter, looking forward to your response.

I put two fi audio team 12 in the dual box on a dc audio 10 k I pounded this box for a year and a half and no rattles or box failures I recommend putting your trust in them you won’t b disappointed

Based on the dimensions it seems to be 2.7 cu ft net volume not sure why they said total air volume.
I have a zvx 12 and at 1000w rms -1300 rms I'm getting port noise. I would recommend to go with kerf cutom box.

Based on the dimensions it seems to be 2.7 cu ft net volume not sure why they said total air volume.
I have a zvx 12 and at 1000w rms -1300 rms I'm getting port noise. I would recommend to go with kerf cutom box.

Based on the dimensions it seems to be 2.7 cu ft net volume not sure why they said total air volume.
I have a zvx 12 and at 1000w rms -1300 rms I'm getting port noise. I would recommend to go with kerf cutom box.

Based on the dimensions it seems to be 2.7 cu ft net volume not sure why they said total air volume.
I have a zvx 12 and at 1000w rms -1300 rms I'm getting port noise. I would recommend to go with kerf cutom box.

Based on the dimensions it seems to be 2.7 cu ft net volume not sure why they said total air volume.
I have a zvx 12 and at 1000w rms -1300 rms I'm getting port noise. I would recommend to go with kerf cutom box.

Whats the net air space....iv got a sundown x12

Whats the net air space....iv got a sundown x12

Whats the net air space....iv got a sundown x12

Whats the net air space....iv got a sundown x12

Whats the net air space....iv got a sundown x12

Does not respond to emails, does not respond to Fb messages. Can not find any information out about question I have.
Do not do business with this company .
Many others have said the same thing.

Does not respond to emails, does not respond to Fb messages. Can not find any information out about question I have.
Do not do business with this company .
Many others have said the same thing.

Does not respond to emails, does not respond to Fb messages. Can not find any information out about question I have.
Do not do business with this company .
Many others have said the same thing.