Specifications
18
©2004 Directed Electronics, Inc.
Troubleshooting Tips
Symptom Probable Cause Action To Take
No output 
Low or no remote turn-on  Check remote turn-on voltage 
at voltage amplifier and repair 
as needed.
Fuse blown  Check power wire's integrity 
and check for speaker shorts. Fix 
as needed and replace fuse.
Power wires not connected  Check power wire and ground 
connections and repair or 
replace as needed.
Audio input not connected  Check RCA connections and 
repair or replace as needed.
Speaker wires not  Check speaker wires and repair 
connected or replace as needed.
Speakers are blown  Check system with known work
ing speaker and repair or 
replace speakers as needed.
Audio cycles 
on and off 
Thermal protection engages Make sure there is proper venti
when amplifier heat sink  lation for amplifier and improve 
temperature exceeds 90°C  ventilation as needed.
(190°F)
Loose or poor audio input  Check RCA connections and 
repair or replace as needed.
Loose power connections  Check power wire and ground
connections and repair or 
replace as needed.
Distorted output 
Amplifier level sensitivity  Readjust gain. Refer to the 
set too high exceeding  Adjusting the Sound of the
maximum capability of  System section of this manual 
amplifier  for detailed instructions.
Impedance load to amplifier Check speaker impedance load, 
too low  if below 1W, rewire the speakers 
to achieve higher impedance.
Shorted speaker wires  Check speaker wire connections 
and fix or replace as needed.
Speaker not connected  Check speaker wiring and repair 
to amplifier properly  or replace as needed. Refer to 
the Speaker Connections section
of this guide for detailed 
instructions.










