THIN PROFILE SQUARE DUAL VOICE COIL SUBWOOFER – 2-OHM. The only thing thin about the L7T thin subwoofer is the mounting depth. These tough subs work perfectly in nearly anything with a motor. The L7T 12-inch Subwoofer is a true-bass, thin subwoofer with a pair of 2O voice coils. Thin-mount and mean, the Solo-Baric® L7T square subwoofer delivers more bass than a round driver, giving you up to 20% more cone area than a round sub while fitting where only a thin driver will do. Match any L7T thin sub with a KX-Series mono amplifier for an outstanding combination of power and size. Uses a Sealed or Ported Enclosure. Square Sub Design Moves 20% More Air Than Round Subwoofers. Easily Mounts Under or Behind a Seat. Dual Voice Coil Design. Ribbed Santoprene Surround Resists Heat And Degrading. Bumped Top Plate For More Excursion & Smoother Performance. SoloKonT Cone With 360-Degree Back Bracing. UniPlateT Solid Pole Piece & Backplate For Excellent Heat Dissipation. The L7T 12-inch Subwoofer works best with a sealed or ported enclosure and 600 watts of recommended power. Every subwoofer requires a certain amount of power (W) to play to its full potential. Please see below information on the recommended amplifier power for this specific subwoofer. Remember that this is power at the working impedance (O). If you require assistance on matching a subwoofer to an amplifier then please contact one of our recommended installers. Mounting Hole Diameter (cm). Recommended Box Volume Sealed (Litres). Recommended Box Volume Ported (Litres).