Amazon.com: Q Acoustics Q B12 Subwoofer Carbon Black - Featuring Infinite Baffle Enclosure, 12" Driver, 220 Watt Class D Amplifier, 1.97" Voice Coil - Active Subwoofer for Home Theater Sound System : Electronics
4" (102 mm) 8 Ohm, Midbass Woofer
Atrend 12LSVB-Black Carbon Fiber - Single 12" Black Carbon Fiber Vented SPL Subwoofer Enclosure - Walmart.com
DS18-ELITE 8" SUBWOOFER 4 OHM 900 WATTS WITH CARBON FIBER DUST CAP DVC – IJWBShop
Alphasonik NSW410 Neuron 400 Series 1200 Max / 400 Watts RMS Dual 4 Oh | Alphasonik
Carbon Special Subwoofer | REL Acoustics
REL Acoustics Carbon Special 12" Powered Subwoofer | Music Lovers Audio