crescendo SYMPHONY S4 Instrukcja obsługi - Strona 11
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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-v2 & S1 Plus minimum working impedance is 1 ohm.
S2, S4 & S6 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-v2, S1 Plus, S2, S4 and S6 working voltage is 8.5V ~ 16Volts
@ Due to the high efficiency of the amplifier, input signals over 4v (S2, S4 & S6) 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.