Installation & Mounting :
MTX recommends your new MTX RTP12 to be installed by an Authorized MTX retailer. Any deviation from specified installation instruc-
tions can cause serious damage to the amplifier, speakers and/or vehicles electrical system. Damage caused from improper installation
is NOT covered under warranty. Please verify all connections prior to turn on your system !
1. Disconnect the vehicle’s negative battery cable.
2. Determine the mounting place for your MTX RTP12. Keep in mind there should be sufficient air flow for proper cooling.
3. Install a positive (+) power cable from the vehicle’s battery through the firewall using a grommet or firewall bushing to avoid cable
damage from sharp edges of the firewall. Run the cable through the interior of the vehicle and connect it to the amplifier (+12V)
terminal (1). Do Not connect to the battery at this time.
Note : Use only proper gauge wire for both positive and negative connections.
4. Install a circuit breaker or fuse within 20cm 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. Grounding - Locate a proper ground point on the vehicle’s chassis and remove all paint, dirt or debris to reveal a bare metal surface.
Attach the ground wire to that contact point. Connect the opposite end of the ground wire to the (GND) terminal on the amplifier (3).
6. Connect a remote turn-on wire from the source unit to amplifier remote terminal (2). If the source unit does not have a dedicated
Remote Turn-on lead, you may connect to the source unit’s Power Antenna lead.
7. Connecting signal cables to the amplifier : There are two ways to supply the signal to your MTX RTP12.
• To get maximum performance, we suggest connecting a high quality RCA to the corresponding outputs at the source unit and inputs
of the amplifier.
• If a source unit is being used without RCA outputs, use the included high-level amplifier’s speaker terminals (8) using the right
gauge speaker wire.
8. Double check all previous installation steps, in particular, wiring and component connections. Once verified, reconnect the vehicle’s
negative battery cable, turn the circuit breaker on or place the fuse in the fuse holder.
Note : Gain Levels on the amplifier should be turned all the way down (counter clockwise) before proceeding with adjustments.
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