Amazon.com: Harmony Audio HA-ML182 Monolith 18" Car Stereo Competition SPL Sub 3500W Dual 2 Ohm Subwoofer : Electronics
Buy Wholesale China 10"/12"/15" Car Subwoofer Series Spl Subwoofer Db Bass Powerful Bass Automobile Sounds Car Audio & 10"/12"/15" Car Subwoofer at USD 28 | Global Sources
ZMAX122 - High SPL 12 Inch Subwoofer
12" Tall Roll SPL Subwoofer Cone Red Stitch | The Lord of Bass