NO SOUND ( NO OUTPUT )
1) Check all connections, cables' routing, short, voltage at SoundQubed amplifiers and headunit
2) Check fuses ,If they are blown, pls replace with new one.
3) Check whether the speakers work well, you can test the speakers by connecting to another amplifier.
PROTECTION
SoundQubed amplifiers have the safest protection circuits.
When the amplifier is shutdown, Protection LED ( RED light ) is turned on on endpanel.
SoundQubed amplifiers will be back on, when resetting headunit by turning off and on if there is no circuit fault.
1) Overload : make sure the recommended subwoofer speaker’s minimum impedance and do not use lower than
recommended ( minimum ) impedance
Single unit of SoundQubed amplifier recommended subwoofer speaker‘s impedance is 1ohm.
Linked SoundQubed amplifiers’ recommended subwoofer speaker‘s impedance is 2ohm.
Q2-200, Q4-90 & Q4-120 amplifier’s minimum impedance is 2ohm stereo or 4ohm mono.
2) Overheat ( Thermal ) : SoundQubed amplifiers will be on some minutes later when they are shut down due to
overheat. For better heat disspation, Pls make better airflow and no obstruction around SoundQubed amplifiers.
3) Speaker Short : Pls make sure the speaker wire connection and re-route speaker wires
4) DC offset : When oer 4V DC, SoundQubed amplifiers will be protected. Pls check whether SoundQubed amplifiers
work after removing RCA-input.
If SoundQubed amplifiers work after removing RCA-input, then pls measure DC by checking RCA-input L and R.
DC is over 4V at input, Pls try by replacing headunit or source unit.
5) High & Low voltage protection : SoundQubed amplifiers have high and low voltage protection
Q1-750, Q1-1200.2 and Q1-2200.2 have voltage protection range from 8.5 ~ 16 Volts, Q1-4500 has 8.5 ~ 18 Volts
So make sure the battery voltage whether they are within recommended voltage ranges
NOISE PROBLEMS SOUND
1) Readjust input level and check the speaker quality at another amplifier.
Pls replace poor quality speakers with good quality ones
2) Pls check ground contact between SoundQubed amplifiers and headunit.
3) Pls check Rca Jack and repalce with new one or re-route Rca Jack cable.
4) Engine noise is caused by poor grounding of amplifiers, headunit, other components, battery or alternator,
so pls check all grounding connection.
POOR BASS RESPONSE
1) Pls check speaker cables and reverse polarity of one channel
TROUBLE SHOOTING TIPS
