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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 Mono Gain Control – 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
(counterclockwise). 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 Low @ 80Hz, 24dB or 120Hz, 24dB Selectable Low Pass X-over Frequency Switch–
• Setting For Subwoofers: First set the electronic crossover by selecting the “80Hz” position or the “120Hz”
of the X-OVER switch. By selecting the “80Hz” setting, the amp crosses the signal over at 80Hz with a 24dB/
Oct roll off. Meaning the signal tapers off fairly quickly at frequencies over 80Hz. By selecting the “120Hz”
setting, the amp crosses the signal over at 120Hz with a 24dB/Oct roll off. Meaning the signal tapers off fairly
quickly at frequencies over 120Hz.
4. Adjusting The Fixed ThunderEQ – Depress the BASS BOOST button located in the PROCESSOR section of the
control panel to supply 12dB of a 40Hz bass boost to enhance the low frequency response of your system.
Depress the BASS BOOST button to achieve a smooth flat response on in the low frequency range.
5. Remote Subwoofer Level Control (Remote Sub) – Lets say the amplifiers gain is set at half way, when the
remote subwoofer level control is plugged in, you now have external control of the gain from zero – half way.
The installation of this level control is NOT necessary to get full power from amplifier.
Note: One Remote Subwoofer Level Control can control two or more amplifiers using a mini plug Y adaptor.
6. 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 range from RED, GREEN, BLUE, and RED again or any color in between making the
combination unlimited.
• 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.