IDQ8 D4 V4 8' Dual 4-Ohm Coil Subwoofer 500 Watts RMS

8' Dual 4-Ohm Voice Coil IDQ Series Subwoofer 125 Watts RMS Per Coil / 250 Watts Total RMS / 500 Watts Max RMS Power Handling Mounting Depth 4.95' / Cutout Diameter 7.26' 82.20 dB Sensitivity / 35.04Hz Resonant Frequency Works well in a sealed enclosure with a volume as low as.33 cu ft., but can also be used in ported and single reflex bandpass enclosures. Full specifications provided with subwoofer, and manufacturer's assistance is available by phone to help with enclosure design