four-channel marine amplifier: built-in bluetooth for wi-fi music streaming twin mosfet power supply marine grade production waterproof marine rating ip-01 silver-plated speaker output terminal connectors adjustable enter advantage degree control anti-thump put off circuitry integrated thermal, overload & speaker brief protection heavy duty aluminum alloy heatsink output electricity: a hundred watt x 4 max amplifier magnificence: ab bluetooth wireless variety: 25′ ft fuse type: 20a enter benefit impedance adjustment: 1 – 300mv frequency reaction: 15hz – 30khz +/-3db enter impedance: 10k ohms (low), one hundred ohm (high) enter sensitivity: 250mv (low), 2. 5v (excessive) t. H. D.: <0. 04% s/n ratio: 95db strength supply: dc 12v matching speaker impedance: four-eight ohms dimensions (l x w x h): eight. 0'' x 7. Nine'' x 2. 0'' 6" horn speakers: power/load score: 50-watts nominal impedance: 8 ohms frequency range: 500 hz – 5 khz spl(@ 1w/1m): 100db mounting bracket & hardware blanketed dimensions: 6" h x four" w x 8'' d speaker wire: connects audio speakers for your audio video (a/v) receiver or amplifier. Marine grade white copper features a plastic jacket around the speaker twine facilitates to supply terrific undistorted indicators. The white line on one aspect of the wire makes it brief and clean to differentiate the polarity comes wrapped round a hard plastic spool that makes shelling out handy and clean. Period: 50 feet. Gauge: sixteen.