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Speaker "Pop" When Amplifier Turns On
Possible Cause
Remote from source unit comes on too
quickly.
Poor remote power signal from source
Solution
Disconnect input signal to amplifier and turn amplifier on and off.
If the noise is eliminated, connect the REM lead of amplifier to
source unit with a delay turn-on module
Use a different 12 Volt source for REM lead of amplifier (i.e.
battery direct). If the noise is eliminated, use a relay to isolate the
amplifier from noisy turn-on output.
Excessive Engine Noise
Possible Cause
RCA cables too close to main power
cables.
Bad component in the signal chain
Poor ground connection at system
components
Poor ground connection at battery
Solution
Route all signal carrying wires (RCA, Speaker cables) away from
power and ground wires.
Bypass any and all electrical components between the source and
the amplifier(s). Connect source directly to input of amplifier. If
noise goes away the unit being bypassed is the cause of the noise.
Remove existing ground wires for all electrical components.
Reground wires to different locations. Verify that grounding
location is clean, shiny metal free of paint, rust etc
Add secondary ground cable from negative battery terminal to the
chassis metal or engine block of vehicle.
"WARNING: Amp is in Protection" Shows in READ Display
Possible Cause
There is a short in the system
Solution
Turn the system off. Check connection to all components for
possible shorts. Check all wires and cables for kinks, splices, poor
insulation, etc. Repair/replace if necessary.
Once the short is corrected, the amplifier should function
normally. If the READ display still comes up with a warning, have
the system checked by a qualified technician.
"THERMAL! (and temperature)" Shows in READ Display
Possible Cause
Amplifier has exceeded normal
operating temperature due to improper
ventilation.
Speaker impedance too low or set
incorrectly.
Low battery voltage
Solution
Turn the system off and allow to cool. Verify adequate ventilation
around amplifier. Move the amplifier to a spot with better
ventilation if needed.
Check for proper speaker impedance, 2 (ohms) minimum,
replace if needed. Check that the Impedance Switch matches the
speaker impedance connected to the amplifier.
Check that the vehicle charging system is maintaining proper
voltage.
If the READ display still comes up with THERMAL, have the system
checked by a qualified technician.
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