SoundMax SM-SA6042, Instruction Manual

SOUNDMAX

SM-SA6042

13

Troubleshooting Guide

Before you consult this listing, make sure the vehicle’s electrical system is working properly by verifying

that other electrical items (e. g. headlights, Windows, etc.) still function correctly.

SYMPTOM

PROBABLE CAUSE

SOLUTION

Low or N.C. remote turn-on connections

Check remote turn-on voltage at amp and

head unit

Blown fuse

Replace with new fast-blow fuse

Power wires not connected

Check butt splices or solder joints;
Check ground and battery connections

No audio

Blown or non-speakers connected

Use VOM or DVM to measure speaker coil
impedance; check speaker wiring connections

Input sensitivity not set properly or
damaged speaker cones

See adjustment procedure and check each
step; inspect each speaker for damage and

repair or replace suspected component

Distorted audio

Low turn-on voltage

Refer to head unit owner’s manual

Audio level low

Mute circuits is on head unit

Check electrical system for low voltage;
Check ground connection

Audio lacks

Speakers wired with wrong polarity,
causing cancellation of bass frequencies

Check polarity of wires from amplifiers to each
speak as defined by the system design;
Check battery voltage at amplifier during
operation

External fuse
blowing

Incorrect wiring or short circuit

Refer to electrical installation and check each
installation step

Whining noise on

audio with engine
running

Amplifier is picking up alternator noise

Install a line noise filter on the head unit’s

power wire;
Check alternator routing diodes or voltage
regulator for proper operation. Check all
grounds, check battery voltage, check RCA

cables

Ticking noise on
audio with engine
running

Amplifier is peaking up radiated spark
noise

Check RCA audio cable; Install an in-line noise
filter on the head unit’s power wire, check
spark plug wires