15-SRX10D4 - Memphis 10" 200W RMS Dual 4-Ohm Subwoofer 15-SRX10D4 - Memphis 10" 200W RMS Dual 4-Ohm Subwoofer Power Handling: Peak: 400 watts | RMS: 200 watts Sensitivity: 84 dB Injection molded polypropylene cone Mounting Depth: 4.57"