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HONDA CIVIC
Coupe or Sedan
ThunderForm Loaded Enclosures purchased in the United States from an authorized MTX dealer
are guaranteed against defects in material and workmanship for a period of two years from the date
purchased by the end user, and limited to the original retail purchaser of the product.
Amplified ThunderForm Enclosures purchased in the United States from an authorized MTX dealer
are guaranteed against defects in material and workmanship for a period of one year from the date
purchased by the end user, and limited to the original retail purchaser of the product.
Product found to be defective during that period will be repaired or replaced by MTX at no charge.
This warranty is void if it is determined that unauthor ized parties have attempted repairs or altera-
tions of any nature. Warranty does not extend to cosmetics or finish. Before presuming a defect is
present in the product, be certain that all related equipment and wiring is functioning properly. MTX
disclaims any liability for other incurred damages resulting from product defects. Any expenses
incurred in the removal and reinstallation of products are not covered by this warranty. MTX's total
liability will not exceed the purchase price of the product. If a defect is present, your authorized MTX
dealer may be able to effect repairs.
Proof of purchase is required when requesting service, so please retain your sales receipt and take
a moment to register your product online at www.mtx.com.
256
Vehicle Specific Subwoofer Enclosure
Made in the USA
One Mitek Plaza, Winslow, IL. 61089
1-800-225-5689
www.mtx.com
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READ ALL DIRECTIONS CAREFULLY BEFORE BEGINNING
MOUNTING LOCATION:
The enclosure mounts in trunk of two or four
door Civic on passenger side.
TOOLS REQUIRED FOR INSTALLATION:
Wire Cutters
Terminal Crimpers
INSTALLATION:
vehicle on passenger side (do not mount yet).
2
.
from your amplifier; loosen terminal knobs (a 13-mm nut driver can be
used). Connect speaker wires from
amplifier
to enclosure, positive to the
red terminal knob and negative to the black terminal knob. Refer to step
0
for mounting directions
AMPLIFIED THUNDERFORM
Routing Power Wire; we recommend a connection directly to the
battery.
3
.
trim will remove easily. If the car is a four door then both the front and rear
For technical assistance call 1-800-CALL MTX.
replace a professional installation. As always before screwing or drilling
check to make sure you will not damage any wires or hoses or cause
Batteries normally produce explosive gases which can cause
personal injury. Therefore, do not allow flames, sparks or lighted
substances to come near the battery. When charging or working near a
battery, always shield your face and protect your eyes. Always provide
_
_
20 Amp Fuse
Lo
w Le
ve
l Signal
Tu
On Lead
X-OVER
TATU
Optional EBC
(Electronic Bass Control)
1
6
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door thresholds need to be removed.
will unsnap easily.
5
pre amp location. Route wire under rear seat on passenger side, over to
threshold and under carpet to the front of vehicle.
6
Open hood.
Locate the factory grommet on the
fire wall
on the passenger side just
to the inside of the battery. It will be a black grommet about two inches
in diameter. This pulls out very easily. Cut a small "X" in the center of the
grommet to accept 10ga power wire.
Grommet
Batte
ry
8
.
Route 10ga red power wire through grommet into the engine com-
partment.
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.
Optional
- The EBC, or Electronic B
ass Control, allows a remote bass
control to be adjusted from the driver's seat.
Setting Crossover
You should set the crossover to your own personal listening taste. The
crossover is adjustable to any frequency between 50Hz (counterclock-
wise) to 150Hz (clockwise). As a guideline, the goal is to create the illu-
sion of bass up front. The higher the crossover point the more “audibly
visible” your sub is going to be. Take your time and really listen to your
system, grab a soda and a few of your favorite tunes and have fun.
ROUBLESHOOTING TIPS IF AMP DOES NOT TURN ON
19
.
on trim; it will snap into place.
0
below.
2
5
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9
from any moving or hot parts that could damage the wire.
10.
Cut 10ga red power wire to length, connect the supplied fuse holder
from the wire kit to the end of the wire.
11.
20
amp fuse from MTX fuse holder. Connect furnished ring
terminal to positive side of battery. Remove 10mm bolt from factory bat-
tery terminal. Pass bolt through factory battery terminal, then ring termi-
nal, and into the other side of factory battery terminal and retighten bolt.
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.
S
PEAKER WIRES
3
Tap into the rear speakers in the trunk
with the supplied RCA High
Level input
wires
yellow (positive), gray/white (negative). Right side, red/yellow(positive),
brown/white(negative). Tap into wires and route to pre
amp of enclo-
sure.
Although, MTX has made every effort to assure proper wiring colors,
MTX is not responsible for any changes made by the vehicle manufac-
C
ONNECTION TO ENCLOSURE
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
INPU
T
T
X-OVE
TATUS
STRIPED
SOLI
D
SOLI
Blue/Y
ell
ow
(+)
Gre
y/White (-)
Bro
wn/White (-
)
Red/Y
ello
w (+
w (+))
Optional EBC
(Electronic Bass Control
5
A
IN PU T
T
X- OV ER
16.
20
amp fuse under hood.
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.
8
Adjust gain and crossover.
Setting Gain
Turn gain knob on Thunderform pre amp to minimum, counter clockwise.
3
4
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