ReviewMeta.com: Pioneer TS-W257D4 10 Inch Subwoofer 1000 Watts Max 4 OHM Amazon Review Analysis
Amazon.com: Pyle 10" Car Audio Speaker Subwoofer - 1000 Watt High Power Bass Surround Sound Stereo Subwoofer Speaker System - Non Press Paper Cone, 90 dB, 4 Ohm, 50 oz Magnet, 2