Amazon.com: Technical Pro - 18" Raw Subwoofers/Woofers/Speakers - PA DJ Pro Audio Replacement Sub - 1000 Watts RMS - 80 oz Magnet - 8 Ohms - 3" ASV Voice Coil : Electronics
Amazon.com: Goldwood Sound, Inc. Stage Subwoofer, Dual Voice Coil 12" Woofers 260 Watt Each 6ohm 2 Speaker Set (GW-412D-2) : Musical Instruments
Audiopipe TSCVR8 TSCVR Series 8 inch Subwoofer - Dual 4 ohm voice coils
Source Hi-Fi Midbass shielded 150W 8 Ohm 86dB 40Hz - 2000Hz Hivi D8.8 Hi-end Woofer speaker on m.alibaba.com
Audiopipe TSCAR8 8 inch Subwoofer - Single 4 ohm voice coil
6.5" VULKAN SERIES SUBWOOFER 500WMAX / 250 WRMS DUAL COIL 4 OHM VOICE – GENIUS AUDIO USA
T-12 Limited Plus – บริษัท บิซซอฟท์ ดีเวลลอปเมนต์ จำกัด
B&C Speaker 15TBX100 4Ω - 15″ Subwoofer
Focal Theva No.2 Slim 3-Way Bass-Reflex Floorstanding Loudspeaker with 5" Speaker Drivers - Each (Light Wood) | World Wide Stereo
GRS 15SSW-4HE 15" High Excursion Super Subwoofer 4 Ohm - Walmart.com