Alpine Swr-t12 12-Inch 1800 Watt 4 Ohm Shallow Mount Subwoofer
#  12" Single 4 ohm Type-R Shallow Mount Subwoofer# Power Handling: 1800 Watts# RMS Power Handling: 600 Watts# Aluminum woofer cone# Santoprene rubber surround# Cast aluminum frame# Radial finned heat sink# Special spider design uses a series of adjacent rolls to get the cone moving without requiring a lot of space# Advanced motor structure reduces the sub's profile while maintaining accuracy# Dynamic neodymium magnet structure# Frequency Response: 25-500 Hz# Sensitivity: 85.5 dB# Top Mount Depth: 3-1/2"