crescendo SYMPHONY S1 Manual do Proprietário - Página 9
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TROUBLE SHOOTING
NO SOUND ( NO OUTPUT )
@ Please check all connections, cable rounting, shorts & voltages.
@ Please check the fuses , If they are blown, please replace with new one.
@ Please check whether speakers work well, you can test speakers by connecting to
another amplifier
PROTECTION
@ Please check minimum impedance, overheating (thermal), shorts and voltages.
@ S1 minimum working impedance is 1 ohm.
S2 and S4 minimum working impedance is 2 ohm stereo or 4 ohm bridged.
@ If amplifiers shut down due to heat, allow some time to cool down.Please allow for better
airflow around the amplifiers.
@ S1, S2 and S4 working voltage is 8.5V ~ 16Volts
@ Due to the high efficiency of the amplifier, input signals over 4v (S2 & S4) may cause protect.
Check input signal levels.
DISTORTION & NOISE
@ Readjust input level and check the speaker quality at another amplifier
Replace poor quality speakers with good quality ones
@ Check amplifiers and headunit's ground contact. all grounds should be common.
@ Check RCA cables for nicks or poor routing. Replace or re-route as needed.
@ Engine noise is caused by poor grounding of amplifiers, headunit, other components,
battery or alternator, so please check all grounding connection.
POOR BASS RESPONSE
@ Please check speaker cables and polarity.