* rms power in watts, amp 1 & amp 2 all channels driven
* @14.4v, 4-ohms stereo <=1% thd+n 70 x 2
* @14.4v, 2-ohms stereo, <=1% thd+n 85 x 2
* @14.4v, 4-ohms mono, <=1% thd+n n/a
* rms power in watts, subwoofer channel driven
* @14.4v, 4-ohms mono <=1.5% thd+n 210 x 1
* @14.4v, 2-ohms mono, <=1.5% thd+n 420 x 1
* length: 16 3/4 (425mm)
* specifications common to all models:
* height: 2 1/8 (54mm)
* width: 9 5/8 (244mm)
* frequency response, 0.5 db: 20 hz - 20 khz
* signal-to-noise ratio: 95 db, a-weighted, re: rated power
* input sensitivity: 125 mv - 5 v low level, 250 mv - 10 v high level
* electronic crossover: variable (defeatable) hi pass, 50 - 200hz, 12bb per octave, for the full-range channels
variable low pass, 50 - 200hz, 24db per octave, for the subwoofer channel
* bass boost: variable 0 to +18db boost @ 40hz, for the subwoofer channel

Package Contents: 

ZX550.3 3-Channel Car Amplifier

Remote Bass Control

Min. Impedance Unbridged: 2 Ohms

Min. Impedance Bridged: 4 Ohms