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the t500-1bd produces the same amount of real power than it's predecessor, even though it's nearly 50% smaller in size! in about the same space as a college sized history textbook, you can now use a dedicated subwoofer amplifier to drive two 4-ohm dvc subwoofers. this amp will provide enough bass to separate you from those envious car audio geeks. * 24db/octave crossover * 4 gauge power/ground terminals * audiophile grade speaker connections * infrasonic filter * mosfet output stage * mosfet power supply * rca pass-thru * cea-2006 compliant * number of channels 1 * rated power; continuous power 250w x 1 @ 4-ohms rms * 400w x 1 @ 2-ohms rms * 500w x 1 @ 1-ohm rms * total power: total sum of 'rated power' 500 watts * efficiency (average) 86% @ 4-ohm * 81% @ 2-ohm * 76% @ 1-ohm * crossover controls low-pass (lp): 35-250hz 24db/octave butterworth * tone controls bass: 0db to +18db @ 45hz * infrasonic filter: -3db @ 28hz 12db/octave * signal input low level: 1 rca pair * signal output low level: 1 rca pair * power input connector block * power wire gauge 4 awg * speaker output connector screw terminal barrier strip * speaker wire gauge 8 awg to 18 awg * heat sink type cast aluminum * cooling convection * remote controls optional remote punch bass eq: (overrides built-in punch bass eq) * visual indicators power * thermal * protect * circuit topology class class bd * frequency response 20hz to 250khz +/- 0.5db * shipping weight 13.39 lbs.; * (6.07 kg.) * dimensions (hxwxl) 2.14 x 8.14 x 11.41 (in); * 5.42 x 20.68 x 28.97 (cm)