Rockford Fosgate P500-12P Single 12" 500 Watt Ported Powered Active Subwoofer Built-in Amplifier. Optimised 12" Low Impedance Woofer. The 12" high output subwoofer is impedance optimised for the built in 500-watt Class-D amplifier that features a low-pass crossover, bass EQ and phase switch.
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