RP-series amplifiers have protection features to prevent any damages from misuse or
faulty conditions.
If RP-series amplifiers sense excessive heat, short circuited speakers DC, or voltage
the protection indicator will light, and the system will be turned off.
In order to check the problem, you should turn all levels down and all power off and carefully
check the installation for wiring mistakes or short.
If RP-series amplifiers shuts down due to excessive heat, They will be working later
when it is cooled down
Before removing your amplifier, refer to the list below and follow the suggested procedures.
TROUBLE SHOOTINGS
NO SOUND ( NO OUTPUT )
@ Please check all connections, cables' routing, short & volta ge.
@ 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 overload, overheat ( thermal ), short and voltage, DC offset.
@ Minimum working impedance is 1 ohm for RP-350.1D, RP-800.1D, RP-1500.1D, RP-2000.1D, RP-3500.1D
and RP-4500.1D. RP-75.4AB and RP-150.4AB is 2 ohm stereo or 4 ohm mono.
RP-600.5 is 2 ohm stereo or 4 ohm mono for CH1 ~ CH4 and 1 ohm for CH5.
@ If amplifiers are shut down due to heat, they will be on some minutes later after cooling down.
Please make better airflow and no obstruction around amplifiers for thermal protection.
@ RP-350.1D, RP-800.1D, RP-1500.1D, RP-2000.1D, RP-3500.1D, RP-4500.1D RP-75.4AB, RP-150.4AB &
RP-600.5’s working voltage is 8.5 ~ 16Volts.
@ When over 4V DC comes into amplifiers, then, they will be DC protected. Check whether amplifiers
work after removing RCA-Input.
If amplifiers work, then check DC by checking RCA-input .
When DC is over 4V at input, try by rep12V source unit .
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 Jack, then repalce with new one or reroute Rca Jack.
@ 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 reverse polarity.
