Harmony Accessory Master R104 Sub Kit sku-526398137

Harmony Accessory Master R104, sku-526398137, is a Restored Automotive subwoofer kit with UPC 650785140370. It includes 1 custom Chevy Silverado 07-13 extended-cab sealed, down-firing box for dual 10-inch subs; 2 Harmony Audio HA-R104 Rhythm Series 10-inch, single 4-ohm subs rated at 500 watts peak and 250 watts RMS each; 1 Kicker CX300.1 Class D amplifier rated at 600 watts maximum; and 1 Harmony Audio HA-AK10 10-gauge, 600-watt amp kit.

The box fits under the rear seat. It has a 6-inch mounting depth and 0.60 cubic feet of air space per sub. Its dimensions are 55-3/4 inches wide, 8-3/4 inches high at the front, 5 inches high at the rear and 14-3/4 inches deep. Each sub has 86.1dB sensitivity, a 30Hz-1.5kHz frequency response, a 5 5/16-inch mounting depth and a 9 1/4-inch cutout diameter.

The amp delivers 150 watts x 1 channel at 4 ohms or 300 watts x 1 channel at 2 ohms, with a maximum of 600 watts x 1 channel. It has a 50-200 Hz variable low-pass filter at 12 dB/octave, a 24 dB subsonic filter at 25 Hz and a 25-200 Hz frequency response. The kit is described for compatible 2007-2013 extended-cab trucks, including the GMC Sierra named in the source title.

That title also references a CXA400.1 amplifier.