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Feature Setup and Adjustments
1. Selecting The Input Sensitivity Range – Before you turn on your system, you must select the proper input
sensitivity range on your amp using the button labeled INPUT SENS located in the GAIN CONTROL section of
the control panel.
• Setting for aftermarket Source Units: Refer to your aftermarket owner’s manual for line level output
specification. If the specification is not available, please follow the instructions listed below.
X1 POSITION: 100mV – 1V (Typically for RCA Input)
• Setting for factory (OEM) Source Units: To check the amount of voltage that is present from the source
unit, take a multi meter, or a volt/ohm meter, on the A/C setting, (range from 100mV up to 10 Volts) attach the
positive and negative leads directly to any exposed speaker. It will not matter if the polarity is correct, it will
read the same amount of voltage.
X10 POSITION: 1V – 10V (Typically for Speaker Level Input)
Note: It is important not to have the amp set up to receive a low voltage signal and give it a high voltage
signal. Doing this can cause damage to the amp.
2. Adjusting The Individual Gain Controls – Before you start setting your amp gains, be sure to defeat all “EQ’s”
(“off” position). You want to set the gain levels properly BEFORE applying any equalization.
Start with the source unit’s volume around ¾ of the way up, and the gain on the amp all the way down
(counter-clockwise). Slowly increase the gain clockwise until the speaker starts to distort. Immediately
decrease gain until the distortion goes away. This will be a good reference point on the volume control to
where the signal starts to distort. Remember every CD will be different, use common sense and constantly
listen for obvious distortion and adjust volume accordingly. The gain on the amp has nothing to do with how
much power the amp can produce, just how fast the amp puts out max power. Just like in an automobile, full
throttle is very rarely needed.
3. Adjusting the Hi, 12dB / Low, 24dB Mono @ 85Hz Switchable X-over Frequency Controls–
• Setting for Subwoofers: First enable the electronic crossover by selecting the “ON” position of the X-
OVER switch, and then select the “L-PASS” (Low pass) position on the L-PASS/H-PASS switch. By selecting
this setting, the amp crosses the signal over at 85Hz with a 24dB/Oct roll off. Meaning the signal tapers off
fairly quickly at frequencies over 85Hz.
• Setting for Components and Separates: First enable the electronic crossover by selecting the “ON”
position of the X-OVER switch, and then select the “H-PASS” (High pass) position on the L-PASS/H-PASS
switch. By selecting this you are giving the speakers 85Hz – 20kHz. The 12dB/Oct roll off means that the
frequencies under (lower than) the set 85Hz, will taper off at moderate slope.
• Setting for Full Range (No Crossover): To disable the electronic crossover, select the “OFF” position of the
X-OVER switch. This setting will allow the amplifier to play all frequencies.
4. Prizm EFX – Now that you have completed adjusting all your amplifier settings, you can set the lighting effects
to you personal taste.
• Selecting Colors: You can change the backlit colors simply by turning the Pot labeled PRIZM COLOR
located in the MTX PRIZM EFX section of the control panel left or right. Starting at the most counter-clockwise
position, the colors change from RED to GREEN and then BLUE, and then back to RED again. Any color in
between can also be chosen making unlimited selections.
• Selecting the EFX Feature: You can switch Prizm EFX lighting to “pulsate” with beat of music. Simply
Depress the button labeled PRIZM EFX located in the in the MTX PRIZM EFX section of the control panel to
turn this feature on or off.