OPERATION
Your DPX Amplifier is now ready for use. Before attempting to operate it, however, it is advisable to
familiarise yourself with the functions of the controls and the significance of the indicators.
1. Power Switch: Isolates the unit from the mains power supply.
2. On:
Indicates the amplifier is in operation.
3. Load/ Fault: Indicates an output load connection is wrong or a dc is present on
the output, or the amplifier has reached an excessive temperature.
4. Mono Mode LED: Mono mode is selected when the yellow indicator is lit.
5. L/R Signal Indicators: The Ch B & Ch A channel LED’s glow green when an input drive signal is present.
6. L/R Peak Indicators: The green channel indicators LED’s will start to change red 3
db
before distortion.
7. L/R Level:
Sets the gain volume for each channel of the amplifier.
SIGNAL/PEAK INDICATOR
The Ch A and Ch B channel indicators will light green when an input signal is present.
When the light changes to bright red it is indicating full power of the amplifier has been reached.
This amplifier is fitted with a clip limiting circuitry to keep the amplifier within the limits of its power supply
and reduce distortion.
Its not good practice to allow these to light bright red continuously. Although it sounds undistorted to the
ear, long term damage to the loudspeakers, & horns may occur. Reduce your input level, so the lights flash on
peaks of the material if this is not enough volume, then you are under-powered for your applications and
should consider increasing your power amp size before damage occurs to the rest of your system.
MONO OR STEREO MODE
Select either mono or stereo mode can be made at any time, using the button at the rear of the unit. In the
stereo mode, the Ch B and Ch A channels behave independently. In the mono mode the Ch A input sockets are
fed into both the Ch B and Ch A amplifiers. The Ch B input will not function. The yellow light on the front
panel indicates mono mode selection.
BRIDGE MODE
Is not Available on this amplifier
LOAD/FAULT INDICATOR
The Total Amplifier Protection System (TAPS) will shut down the amplifier and the red fault indicator will
light, if a shorted or unacceptable load is detected to either output.
To Re-set the amplifier - switch off and remove all output cables and check for short circuits or wrong load,
(Impedance is too low for safe operation).
The amplifier will trip out every time until the fault is located.
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