See all parts that fit your 1981 900
12" Single Ported/Vented Enclosure
Product highlights
• 12" Single PRO Ported Subwoofer Enclosure
• 11/16" Medium Density Fiberboard Construction
• Total box volume: 1.48 cubic feet
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Manufacturer:
Model Number:
GSP 1 12
Weight:
28.00lbs
Internal SKU:
gsp112
Internal Product ID:
62500
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Not quite...
The box is definitely sturdy and well constructed. I think that I was hoping for a better product to throw my sub into that would've been less hassle for me, which is the reason I purchased it so I wouldn't be building my own. The port tube was a little loose, so I had to glue it. It was missing a screw on the outside port mounting point, maybe all the black from the carpet and the black screws going into the black plastic confused the assembly person. The terminal cup connectors inside are ridiculously thin and my 1/4" female quick disconnects had to be massively crimped down and still seemed like they wanted to slide off. I actually think I may have to replace the quick disconnects with ring terminals, which fortunately are an option thanks to the nuts that hold the ultra thin gold plated strips to the cup terminal. My final gripe is that the speaker hole was cut oblong, which created a nightmare for setting the speaker for mounting. In hindsight I could've used some bobby pins to repeatedly lift and reset until I found the perfect position before drilling my holes. Additional note, if you are trying to put an Alpine 12" into this box, it for the most part doesn't fit well without some severe maneuvering.
17 found this helpful
Just OK
Box looks good, with the exception it doesn't actually come with that Ground Shaker plate on it. Sound quality is on point. Bad points would be the port tube fell off before package even made it threw the delivery, and the sub hole is cut poorly making getting all screws for sub mount difficult, I managed 7 out of the 8 in a rush.
15 found this helpful
Great tuned quality box!
I have purchased the 10" and 12" version of this box, the mdf is quality and the carpet work is really nice!
The box is tuned perfectly and hits a full range of hz, I have yet to find a better round port box for the price.
Great price, amazing quality, and fast shipping!
15 found this helpful
Great box!
Works great with the 12" single VC unit I also purchased here in my vehicle. These boxes are built very well with attention to detail and workmanship. The proof is in the end result. Very easy to install woofer and wires as well as fitting into vehicle. My next box will definitely be a ground shaker unit as well from Sonic.
13 found this helpful
Ground Shaker GSP 1 12
For a prefab enclosure I was surprised at how well it was built.
6 found this helpful
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
