MTX Thunder TH1500D User Manual page 3

Control Panel (Top)
Connectors Panel (Side)
Control Panel :
Gain Control - The gain control matches the input sensitivity of the amplifier to the source unit being used. The
operating range varies from 100mv to 6V.
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.
Warning : Never adjust the gain control without a subwoofer connected.
This will damage the amp...
Low Pass X-Over Frequency Control - Used to select the desired LP x-over frequency. The frequency is adjustable
from 40Hz to 200Hz.
Subsonic Frequency Control - Used to select the desired subsonic frequency (high pass). The frequency can be
adjusted from 20Hz to 50Hz. The subsonic filter protects subwoofer(s) against low frequencies that can cause
damage. Very useful with vented enclosures.
Phase switch - Used to match the bass from subwoofers and front speakers. Toggle the phase switch from 0° to
180°. Keep the loudest bass response. Also useful in bridge mode.
Power On LED - The LED illuminates red when the amp is switched on. For
Short or Thermal protection, see points 9 and 10
Connectors panel :
RCA Inputs - These RCA inputs are used with source units that have RCA or
Line level outputs. (Source units need a minimum level of 100mV output for
proper operation of the amplifier).
MTX recommends only high quality twisted pair cables (such as StreetWires)
to decrease the possibility of radiated noise entering the system.
High Level Inputs :
MTX amplifiers allow high level inputs through RCA type input connections.
Simply connect the head unit speaker leads to the provided adapters
High level inputs
through RCA
To Head
Adaptors
Unit
included
Speakers