MTX XTHUNDER - Troubleshooting

INSTALLATION
For
proper perfomance
and
safety,
MTX
recommends
installing
an
inline
fuse
per
the
owner's
manual
instructions according
to
the
following.
XTH
UNDER
1500.1
160A
Fuse
XTHUNDER1200.1
120A
Fuse
XTH
UN
D
ER800.5
BOA
Fuse
XTHUNDER125.4
60A
Fuse
TROUBLESHOOTING
Problem
Cause
Solution
No
+
12V
at
Remote
Connection
Supply+
12V
to
Terminal
No
+
12V
at
Power
Connection
No
LED
Indication
Supply+
12V
to
Terminal
Insufficient
Ground
Connection
Verify
Ground
Connection
Blown
Power
Fuse
Replace
Fuse
Volume
on
Source
Unit
Off
Increase
Volume
on
Source
Unit
Speaker
Connections
Not
Made
Make
Speaker
Connections
Power
LED
On,
Gain
Control
on
Amplifier
Off
Turn
Up
Gain
No
Output
Signal
Processing
Units
Off
Apply
Power
to
Signal
Processor
All
Speakers
Blown
Replace
Speakers
Head
Unit
Volume
Set
Too
High
Lower
Head
Unit
Volume
Output
Distorted
Amplifier
Gain
Set
Too
High
Lower
Amplifier
Gain
Balance
Reversed
Speaker
Wire L
&
R
Reversed
Correct
Speaker
Wire
Orientation
RCA
Inputs
Reversed
Reverse
RCA
Inputs
Bass
is
Weak
Speakers
Wired
Out
of
Phase
Wire
Speakers
with Correct
Phase
Not
Using
MTX
Subwoofers
Buy
MTX
Subwoofers
Excessive
Output
Levels
Lower
the
Volume
Blowing
Fuses
Amplifier
Defective
Return
for
Service
6
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