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  • Specifications
    RMS Power
    250 watts
    Peak Power Handling
    1000 watts
    4 ohms
    Minimum Frequency Response
    35 hertz
    Maximum Frequency Response
    0.2 kilohertz
    90 decibels
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JBL - GX Series 12" Single-Voice-Coil 4-Ohm Subwoofer - Black

Your price for this item is $129.99

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Rating 4.7 out of 5 stars with 454 reviews

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  • Rating 4.8 out of 5 stars

  • Rating 4.6 out of 5 stars

  • Rating 4.8 out of 5 stars

96%would recommend to a friend

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The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

  • Rated 5 out of 5 stars

    Really surprised with the performance!!!

    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.

    Posted by FairviewHeightsGuy

  • Rated 5 out of 5 stars

    Buy when on sale.

    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

    Posted by AverageJoe

  • Rated 5 out of 5 stars

    Awesome Boom for the Buck!

    This is an amazing driver when you catch it on sale which BB tends to run once every quarter, I built an array of near field subs with this driver. There is a huge peak at 60Hz and drops pretty quickly from there. If you are going to use it like me for NF bass array, you will need to DSP the heck out of these. Regardless, this is an amazing driver for the money, when you are running multiples of these. I am at 16 right now :)

    Posted by Powerslave

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