MTX Audio MXA4002 User Manual

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4. Remote Gain Control

Included is a remote gain control, which is a volume control that is active with the low pass
ﬁlter engaged. This control should be mounted near the driver in an easily accessed location.
This is not a gain knob, this is a level control. The level control will attenuate the amp or
increase its output to the level of the gain setting. It is used to adjust bass output between
music sources or tracks(see picture below for connection location).

5. Connecting signal cables to the ampliﬁer

There are two ways to supply the signal to our ampliﬁers. 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 high-level
inputs for signal which will turn the ampliﬁer on via our Smart Engage circuitry (Four-channel
amps will only engage on the front high-level inputs).

6. Reconnect the battery ground to the vehicle battery

Double check all the previous installation steps. Make certain the wiring and component con-
nections are securely attached to the amp +BATT, remote and ground. If everything is in order,
complete the installation by reconnecting the battery ground to the vehicle battery.