crescendo SYMPHONY S1 Plus Manuale d'uso - Pagina 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.