AW831T 8” NATURAL SOUND WOOFER 30 oz. Strontium Magnet Power Handling: 200 watts RMS Frequency Response: 30Hz - 1kHz Efficiency: 90.3 dB PHAT Foam Surround Non-Pressed, Non-Transfer Paper Cone KM3’ Coated for Virtually No Cone Distortion 1.5” 4-Layer ASV Voice Coil Dual 4 Ohm 2 or 8Ohm Operation Mounting Dimensions: Depth; 3 7/16” Hole; 7” Diameter; 8 3/8” Multi-connect Lug Lock Terminals