JBL - GX Series 12" Single-Voice-Coil 4-Ohm Subwoofer - Black

I bought 3 of these bad boys 2 years ago and they’ve held their own if you were planning on spending 400 dollars on a subwoofer and seen these I’d say buy a more expensive subwoofer but I got all 3 for $90 brand new and for the money they’ve paid for themselves if your thinking about getting a cheap subwoofer then I would totally recommend these

I purchased two of these and have only installed one. As other reviews have stated, it’s hard to pass up such a good deal when these are on sale. That being said, that was all I was expecting when purchasing these, nothing more. But to my surprise, I’m extremely impressed by the performance from these 250 watts RMS subwoofers. I had an Alpine 12” Type R in one of my automobiles, and a JL 13W7 in another car I own. Both those subs are fed 1000 watts RMS and the JBL sub pushing 250 watts can actually keep up with the bass when comparing those two. I’m sure you may be thinking what an extreme comparison, but I can assure you for the low wattage requirement for these subs, you can easily achieve car rattling bass from these subwoofers. Make sure you have the proper enclosure though. I put the JBL subwoofer in a ported box which has a volume of ~ 1.9-2.0 cubic feet, and they sound great!!! I have not put these in a sealed enclosure, so I couldn’t say how they sound in those. I recommend a ported enclosure to get maximum output since you’ll be running a lower wattage. I also set my low pass crossover to 100 Hz, which seems to be a sweet point for these subs to transition from your lows, to your mid and high frequencies. I have this subwoofer (yes only one) running off a Kenwood Excelon X501-1, which seems to be the exact Kenwood amplifier Best Buy sells as the Kenwood KAC-501, but with a silver color finish. I packed up my bigger amp to run these, because the Kenwood was enough to run these without having to do any major electrical upgrades to my automobile( high output alternator mainly). I had to do major costly upgrades to run the JL and Alpime subwoofers properly, which wasn’t the case with these subwoofers. I think that should be a major deciding factor when buying any car audio equipment, as I learnt the hard way by dumping loads of money into car electrical upgrades. This is a true gem of a purchase if you give it enough power and the correct enclosure. I did not purchase an enclosure from Best Buy though, because they did not have what I was looking for. I added some pics of my other Subwoofers and amplifiers, to prove that this is a genuine review, as I see a lot of claims online, but no picture proof.

Great so far. Like many others, I got two of these at discount and didn't expect too much. Knowing my van is basically baseless from the factory I figured anything was better than my current position. Man these things have blown me away with their performance. I only installed one, in my van being powered by a MTX Thunder 500.1. It sounds great. I usually keep the bass turned down on my head unit otherwise this sub is rattling everything. Like I said, more than capable. I built a 1.7 cu.ft. sealed box, as I found that as the recommended box from JBL for this speaker. I extremely happy with my purchase!

Great SQ sub. Perfect for the audiophile with the need to keep power consumption low without sacrificing too much volume.

Bought two when they were on sale for 29.99. They do bang for 250 rms. Combined with the Attrend box. Box: https://www.bestbuy.com/site/atrend-12-dual-sealed-subwoofer-enclosure-charcoal/9026984.p?skuId=9026984

Awesome sub for the price replaced a JL audio sub it sounds better

I really love this subwoofer, Excellent sound huge upgrade to my system.. deep and clean boom boom. It gives that thunder sound effects i was looking for

Unbelievable sound coming from this subwoofers. Purchased 2 of them and installed them on to a ported box. Sounds amazing for the price. Worth it if you get them for $30.