500 Watts MonoBlock Amplifier, Class D, 1 Ohm Stable Subwoofer Amplifiers for Car Audio Speakers. VARIABLE SUBSONIC FILTER WITH LOW-PASS CROSSOVER - To prevent your subwoofer(s) from bottoming out, the variable subsonic filter filters out frequencies below the subwoofer(s) specified low frequency limits and allows the driver to reach a maximum safe excursion.
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