The price is firm The owner upgraded and this was his original nothing was wrong with it. I do not have the supplies to test it on site so I can bring a multi meter if you know how to test, or you can hook up on site or I will allow returns for 24 hours (as long as brought back in same condition within 24 hours) **I meet by 249&Bw8 area** Product highlights: powered bandpass subwoofer 8" woofer built-in 100 watts RMS amplifier (125 watts maximum) acrylic front window 4 white LEDs illuminate interior when sub is on frequency response: 46-150 Hz sensitivity: 87.5 dB variable low-pass crossover (50-150 Hz at 6 dB) phase switch (0, 180°) bass boost control (0-12dB at 55 Hz) preamp- and speaker-level inputs 10-gauge wiring kit required (sold separately) dimensions: 14.88"W x 11.15"H x 14.9"D1 x 9.84"D2