Installation And Mounting; Adjusting The Gain - MTX X3000D Owner's Manual

X3000D
- amplifier owner's manual
Installation & Mounting
Any deviation from the connection specifications recommended may cause serious damage to the amplifier, spea-
kers and/or vehicle electrical system. Please double-check the connection before turning the system on.
1. Disconnect the vehicle's negative battery connection.
2. Determine the mounting place for your MTX X THUNDER amplifier. Keep in mind that there needs to be sufficient
air flow across the heatsink of the amplifier to ensure proper cooling. Mark the mounting holes of the amplifier and
drill the holes to mount your amplifier. Before drilling any holes make sure that all vehicle wires, gas lines, brake
lines, gastank etc. are clear and will not interfere with the installation. Mount your MTX X THUNDER amplifier.
3. Run a positive power cable from the vehicle's battery through the firewall using a grommet or firewall bushing to
avoid damage to the cable from sharp edges of the firewall. Run the cable through the interior of the vehicle and
connect the end to the amplifier's +BATT terminal. Leave the cable disconnected from the battery.
Note : Use only proper gauge wire for both positive and negative connections for optimum performance.
4. Install a circuit breaker or fuse within 30cm of the battery. This effectively lowers the risk of severe damage to
you or your vehicle in case of a short circuit or accident. Make sure the circuitbreaker is switched off or the fuse is
taken out of the fuse holder untill all connections are made. Now connect your positive power cable to the positive
battery terminal of the battery
5. Find a good ground source on the vehicle's chassis and remove the paint to reveal bare metal at the contact
point. Attach the ground wire to that contact point and connect the other end of the ground wire to the GND termi-
nal of your MTX X THUNDER amplifier.
6. Connect a Remote Turn-on wire from your source unit to your MTX X THUNDER amplifier's Remote terminal.
If your source unit does not have a dedicated Remote Turn-on lead, you may connect to the source unit's Power
Antenna lead.
7. Connect RCA cables from your source unit to your MTX X THUNDER amplifier's RCA input jacks. If RCA (low
level) output is not available, connect the included speaker (high level) connector to the speaker wires from the
source unit.
8. Connect your speakers to your MTX X THUNDER amplifier's speaker terminals using 4mm 2 minimum speaker
cable.
9. Double-check all the previous installation steps, in particular, the wiring and component connections. If every-
thing is in order, reconnect the vehicle's negative battery connection, switch your circuitbreaker on or place your
fuse in the fuse holder and begin adjusting your amplifier.
Note: Be sure that the Gain Level on the amplifier is turned all the way down (counter clockwise) before proceeding
with adjustments.

Adjusting the gain

1. Turn the gain control on the amplifier all the way down (counter clockwise).
2. Turn up the volume control on the source unit to approximately 3⁄4 of maximum.
3. Adjust the gain control on the amplifier until audible distortion occurs.
4. Adjust the gain control down until audible distortion disappears.
5. The amplifier is now calibrated to the output of the source unit.
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