Alpine SWS-1043D Type-S 10" subwoofer with dual 4-ohm voice coils at Crutchfield
Earthquake Sound SWS-12 (sws12) 12" Single 4 ohms Shallow-Mount
Amazon.com: Earthquake Sound SWS-12X Shallow Woofer System 12-inch Car Subwoofer, 4-Ohm (Single) : Electronics
X84SWS (Open-Box) - Earthquake Sound Shop
Alpine SWS-12D2 Type-S 12" subwoofer with dual 2-ohm voice coils at Crutchfield
Amazon.com: Earthquake Sound X84SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 4-Ohm (Pair) : Electronics
Alpine SWS-1042D 10" subwoofer with dual 4-ohm voice coils at Crutchfield
Amazon.com: Earthquake Sound SWS-12X Shallow Woofer System 12-inch Car Subwoofer, 4-Ohm (Single) : Electronics
Earthquake SWS-8X 8" Single 4 ohm SWS Car Subwoofer
Review: Earthquake SWS-8xi (2-ohm) and Rockford Fosgate P300-2 - BMW M3 Forum (E90 E92)
Product Review
Best Buy: Alpine Type-S 15" Dual-Voice-Coil 8-Ohm Subwoofer Black SWS-15D4
Earthquake Sound Shop - SWS-8X Shallow Woofer System
Earthquake Sound SWS-6.5 6.5" SWS Car Subwoofer
Earthquake Sound SWS-6.5X Shallow 6.5' 200 Watt Mid Bass Car Subwoofer (pair) 168975910172 | eBay
Amazon.com: Earthquake Sound SWS-12X Shallow Woofer System 12-inch Car Subwoofer, 4-Ohm (Single) : Electronics
Customer Reviews: Alpine SWS-1223D Type-S 12" subwoofer with dual 2-ohm voice coils at Crutchfield
Earthquake Sound SWS-12X 12" Single 4 ohm Shallow Sub
Earthquake Sound SWS-6.5X Shallow 6.5' 200 Watt Mid Bass Car Subwoofer (pair) 168975910172 | eBay
Earthquake Sound Shop - SWS-12X Shallow Woofer System
Earthquake Sound SWS-10X Shallow Woofer System 10-inch Car Subwoofer, 4-Ohm (Single)
Amazon.com: Earthquake Sound SWS-12X Shallow Woofer System 12-inch Car Subwoofer, 4-Ohm (Single) : Electronics
Earthquake Sound Shop - SWS-8X Shallow Woofer System
Earthquake Sound SWS-8Xi 8" 300 Watts Shallow Subwoofer w/ Mounting Ring (Each) 168975910929 | eBay
