.
(Please note: If you intend to use the amplifier in the Tri-mode configuration, it is
necessary to set the crossover control to the “FLAT” setting in order to receive full range
output)
The amplifiers are equipped with a built-in variable crossover network allowing you to
select the crossover type (i.e. Low-Pass or High-Pass) and the desired crossover point.
For example if you wish to drive a pair of subwoofers, you can select the “Low Pass”
setting on the amplifier to filter out high frequencies. This will send only low frequencies
to your subwoofers (see example settings below). The crossover point should be
determined by the speakers operating range. Please refer to speaker manufactures
recommended crossover point.
Select the crossover type on the
amplifiers side panel.
(Low-pass is selected in this example for subwoofers)
You can add up to 12dB bass boost by
increasing the Bass Boost control.
Select the crossover point
for your speakers.
A
DJUSTING THE X-OVER AND BASS
Fine tune the amplifier's input sensitivity.
T h e l e v e l s e n s i t i v i t y c o n t r o l f o r t h e M D S
amplifier is located on the side panel. This level control
has been included to allow adjustment to properly
match the output of the radio. This is one of the most
misunderstood adjustments. By rotating the control in
the clockwise direction, the amplifier‘s input will
become more sensitive and the music will play louder. This
is not a volume control and you will not get more power out of the amplifier in the
maximum position! It may seem to deliver more output, but actually the system is only
playing louder faster as you turn the volume control on the radio. Ideally, to properly level
match the system the goal is to achieve maximum output from the amplifier without
distortion at about 3/4 of the volume control.
To determine if the amplifier’s gain is set properly, turn the system on and slowly increase
the volume control. You should be able to use about 3/4 volume before the system gets
loud but not distorting. It is very important when making these adjustments that you do
not over drive the speakers (at point of distortion) this will cause permanent damage to
the speakers. If you are unable to achieve 3/4 volume before distortion you will need to
adjust gain control (in this case you would reduce the gain). The gain controls should be
adjusted very slowly. It may help to have another person to assist you by adjusting the
gain controls while you listen for distortion.
F
INE TUNE THE SYSTEM
12
X-OVER
FLAT
LOW PASS
HIGH PASS
80HZ
BASS
LEVEL
LOW PASS
12dB
OdB
100mV
8V
250
50
Summary of Contents for Mosfet C2
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