MTX Thunder4122 - Troubleshooting Guide

Problem
No LED indication
LED on, no output
Troubleshooting Guide
Read this if you wanna be a do-it-yourselfer -- or give us a call at I-8OWlLLMTX.
g&g
No t12V at remote connection
No t12V at Power connection
Insufficient ground connection
Blown power fuse
Supply t12V to terminal
Supply t12V to terminal
Verify ground connection
Replace fuse
Volume on head unit off
Speaker connections not made
Gain control on amplifier off
Signal processing units off
All speakers blown
Increase volume on head unit
Make speaker connections
Turn up gain
Apply power to signal processor
Replace speakers
Output distorted
Head unit volume set too high
tower head unit volume
Amplifier gain set too high
tower amplifier gain
Balance reversed
Speakers wired L t R reversed
RCA inputs reversed
Wire speakers with correct orientation
Reverse RCA inputs
Some balance reversed
Some Speakers wired L t R
reversed
Some RCA inputs reversed
Wire speakers with correct orientation
Reverse appropriate RCA inputs
Bass is weak
Speakers wired out
of phase
Not using MTX woofers
Wire with correct phase
Buy MTX woofers
Blowing fuses Excessive output levels
Amplifier defective
tower volume
Return for service