Alpine RS-W12 Shallow Car Audio Subwoofer12 inch R Series Shallow Subwoofer With an ultra shallow subwoofer design and powerful sound output, the R Series Shallow Subwoofers give you the best of both worlds in size and sound. 12 High Performance Shallow Bass Driver Alpine Gen2 DD Linear Magnetic Circuit Cast Aluminum Frame Aluminum Dust Cap Neodymium Magnet Ultra Shallow Design For those looking to add powerful, hard hitting bass performance to their vehicle but lack the space to add a