Troubleshooting - Rockford Fosgate FanaticQ midrange FNQ2404 Operation & Installation

T
ROUBLESHOOTING
Symptom
No sound from
speakers
Distorted sound
from speakers
Engine noise
from one or
more speakers
Diagnosis
Wires between amplifi-
er, crossover or speak-
ers not connected
properly.
Amplifier has no output.
Speaker wires are
shorted to each other
or to the chassis of the
vehicle.
Speakers are blown.
Incorrect wiring be-
tween crossover and
speakers
Speaker wires shorted
to chassis of vehicle.
Speaker wires are rout-
ed near radiated noise
source. (Power cables,
vehicle computers, etc.)
Crossover is mounted
near radiated noise
source. (Power cables,
vehicle computers, etc.)
– 8 –
Remedy
Check and repair or
replace wiring as needed.
Check system with known
working amplifier and re-
pair or replace as needed.
Check for shorts in the wir-
ing with a volt/ohm meter
and repair or replace wires
as needed
Check system with known
working speaker and repair
or replace as needed.
Check wiring and repair or
replace as needed.
Check for shorts in the
wiring with a volt/ohm
meter and repair or
replace wires as needed.
Re-route speaker wiring
away from noise sources.
(Refer to the Installation
Considerations section of
this manual.)
Move crossovers away
from noise sources. (Refer
to the Installation
Considerations section of
this manual.)