Review on Nippon HC-101 4 Ohm 1-Channel 400W 120Hz Low Pass Subwoofer Crossover: Enhance Your Bass with Precision by Jose Brunson

I installed a 6" woofer in a caravan. I am running it through a Jensen stereo which has three speaker outputs and is connected to speaker C. The dual voice coil Pyle speaker I used has has good bass but also tried its hand as a midrange and sounded like crap.With two of these built in (one for each stereo channel) at least 99.5% of the high frequencies were GONE.No more guitars or singers vocals or anything like that, ONLY the bass comes out this speaker (as it should!) Note that they are bigger and heavier than I thought they are about 3/4 pounds and about 3 1/2 inches square.