MB Quart 400W 10 Discus Series Shallow Subwoofer With Poly Cone And 2 Voice Coil Type: Subwoofers RMS Power: 200W Sensitivity: 82 dB Impedance: 2 x 4 Ohm Feature: 10 Shallow Subwoofer Dual 2 4-Ohm Voice Coils 400 Watts Power Handling All new design based on popular RLP shallow subs Stamp-cast deep drawn steel basket Durable heavy textured powder coat 2� dual voice coil Vented aluminum voice coil former UV rubber surround Thermal formed PP cone & dust cap Works well in sealed and ported applications CUT-OUT: 9.13 (232mm) CHASSIS DEPTH FROM FLANGE: 2.95 (75mm)