X-8 V.4 D4 - Sundown Audio 8" Dual 4-Ohm X-V.4 Series 1000W RMS Subwoofer. Sundown Audio X-8 V.4 D4 8" 1000W RMS Dual 2-Ohm Series Subwoofer. From the beginning to the end, nothing gets over looked bySundown Audio's engineers.
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