10.
Remove 20amp fuse from MTX fuse holder. Connect furnished ring
terminal to positive side of battery. Remove 5/16" bolt from factory battery
terminal. Pass bolt through factory battery terminal, then ring terminal,
and into the other side of factory battery terminal and retighten bolt.
11.
Ground amplifier to chassis of vehicle; connect the terminal provided
to the 10ga black wire from furnished wiring harness. A good ground is
as important as the power connection. The ground should be as short as
possible and the contact point should be free of paint and debris.
SPEAKER WIRES
12.
In the channel on drivers' side between front and rear door locate
the rear speaker wires in the wiring harness. Colors are right channel;
blue/white (positive), blue/pink (negative), and left channel; brown/yellow
(positive), brown/light blue (negative). Tap into wires with the supplied
RCA High Level input wires and route under carpet to the rear seat, over
to pre amp on enclosure. Depending on the option package, there may be
more than one wire in these colors. The speaker wire will be the smallest
wire and twisted together.
Although, MTX has made every effort to assure proper wiring colors,
MTX is not responsible for any changes made by the vehicle manufac-
turer which sometime occur. If wiring colors do not match then physical
verification is required.
CONNECTION TO ENCLOSURE
13.
Connect speaker wire RCA's to the inputs of pre-amp.
Note: Patented BTL turn on circuitry- amplifier senses DC offset provided by “high
powered” or BTL type head units. This feature turns the amplifier on automatically
if you are using high level inputs.
_
+
20 Amp Fuse
20
A
PW
R
G
N
D
RE
M
EB
C
INPUT
RI
G
H
T
LE
FT
G
AI
N
X-
O
VE
R
ST
AT
U
S
STRIPED
SOLID
SOLID
Blue/White (+)
Blue/Pink (-)
Brown/Light Blue (-)
Brown/Yellow (+)
Optional EBC
(Electronic Bass Control)
14.
Plug power harness into amplifier pre-amp.
20
A
PW
R
G
N
D
RE
M
EB
C
INPUT
RI
G
H
T
LE
FT
G
AI
N
X-
O
VE
R
ST
AT
U
S
15.
Replace 20amp fuse under hood.
16.
When amp turns on, LED will display red during diagnostic mode,
and then green, signaling amp is on and functioning. Amp will only turn
on when radio is on.
17.
Adjust gain and crossover.
Setting Gain
Turn gain knob on Thunderform pre amp to minimum, counter clockwise.
Play a favorite tape or compact disc that contains consistent music and
bass. Turn the source unit to maximum listening level. You should know
that some source units will produce distortion or “clip” before the unit
reaches maximum volume. Reduce volume to the loudest listening level
before distortion. Turn the gain knob on the Thunderform pre amp clock-
wise until the speaker starts to distort and reduce gain to loudest listening
level before distortion.
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