Emphaser ESW-M8 Monolith 20 CM Subwoofer 1 x 4 Ohm 200 Watt RMS 8 " Sub | eBay
1x Hifonics BRW12D2 2000 Watts 12 Inch BRUTUS Car Audio Dual 2 Ohms Subwoofer Bundle - Walmart.com
Emphaser - Gives your spare wheel a real value: our EBS108A subwoofer with integrated amplifier. Car & HiFi test review shows the EBS108A is the Best Product in its class. Retail only
Products - Emphaser
EMPHASER EM-BMW3SUB Bass Speaker Subwoofer Woofer Under Seats For BMW | eBay
ESW-M10 Monolith Subwoofer, 25 cm
Emphaser EM-BMWSUB2 Underseat Subwoofer Bass Compatible With BMW Z4 E89 Ab 2009 | eBay
Monolith Bassreflex Subwoofers
EMPHASER EM-BMW3SUB 20 cm Car Subwoofer Compatible with BMW Vehicles Plug & Play Subwoofer 300W : Amazon.com.be: Electronics