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Overview You must have JavaScript enabled and Flash 9.0.115 to see this content. Boston Acoustics SPG555. Read the Performance Auto & Sound review of the GTA-400M PERFORMANCE High efficiency Class AB design Boston’s Q-Tune™ circuitry for Simple Bass Output Optimization SST™ (Symmetrical Signal Topology) system uses balanced asymmetrical inputs for noise cancellation Fully adjustable and selectable Lowpass/Highpass crossovers Wrap-around heatsink design for ample cooling in multiple mounting positions INSTALLATIONCompact chassis allows for placement flexibility Dedicated High- (speaker level) and Low- (RCA) level inputs Optimal angled speaker and power blocks for easy wire connections All input/output connections are located on one side of the amplifier to ease installation and wire management IMS™ (Integral Mounting System) reduces the amplifier footprint Recessed control panel for clean installation and concealed wire management Optional GTA-RSL remote gain for controlling the subwoofer volume from the drivers seat Specifications Mono Power @ 4-ohm(CEA-2006-A): 250 Watts x 2 Frequency Response (-3dB): 10Hz-50kHz Signal to Noise Ratio (A Weighted): >90dB Lowpass Crossover: 12dB Adj. (50Hz to 200Hz) Highpass Crossover: 12dB Adj. (50Hz to 200Hz) Height: 2 3/8"(61mm) Width: 14 3/4" (375mm) 4 Ch. Power @ 4-ohm (CEA-2006-A): 70 Watts x 4 4 Ch. Power @ 2-ohm (CEA-2006-A): 125 Watts x 4 Depth: 8 3/8" (211mm) Channels: 4 Channels Customer Reviews Reviewer: Aaron this amp is ok clear and clean sound but lacks power so i gave it to my son for his car. Im going with the gt5750 5 channel, i have not hook it up yet i hope it has more power than the 704 front and rear speakers than the 704 4 channel did.
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