Use both inputs for front and rear stereo. Crossover Selector (HPF/FLAT/LPF)
This switch allows these two amplifier channels play full range, low pass, high pass. Input Level Controls
This for adjusting input sensitivities.
2.GB
SAC 2090 CONTROL FUNCTIONS
1.
4. the LPF (Low Pass Filter) position, all the high frequencies are filtered out
and the amplifier produces only low bass frequencies.
Switch the crossover FLAT when amplifier used Tri mode configuration when full range speaker are used. adjust the sensitivity, turn the controls fully counterclockwise minimum. Adjust the radio/head unit volume knob maximum
volume, and then turn the level controls the amplifier clockwise until audible distortion occurs.
GB.
3. the amplifier used power
subwoofers, set the crossover switch LPF. the amplifier used power midrange and tweeters coaxial type speakers, set the crossover HPF. the HPF position adjust the frequencies from 40Hz-178Hz, the low frequencies are filtered out and allowing the amplifierto
play mid and high frequency. CORSSOVER
This for adjusting LPF HPF frequencies; the LPF position, adjust the frequencies from 66Hz-275Hz, all the high frequencies are filtered out and the amplifier
produces only low bass frequencies. Status LED indicators
GREEN indicates the normal operating condition: the amplifier ON. RED indicates the Amplifier protection
5. RCA inputs
RCA cables marked FRONT REAR from head unit other line level device should connected here.
On the contrary, the HPF position, the low frequencies are filtered out and allowing the amplifier play mid and high frequency
