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ML Power 4
Advanced Web Manual
EN
8
B CH LEVELS: B channels input sensitivity adjustment
control. Set to 1 position. Use a CD as source, increase head
unit volume until output distorts, then decrease volume
by 1 step in order to eliminate distortion. Turn LEVELS up
until sound becomes distorted, then turn LEVELS down a
bit for optimum sound.
PASS MODE (HI - FULL - LO): B channels filter switch.
Select FULL to drive full range power outputs. The full frequency
bandwidth will be output to power output connectors. Select
HI for Hi-pass to drive a MIDRANGE / TWEETER. Select LO for
Lo-pass to drive a SUB / WOOFER / MIDRANGE.
MODE (ST - MO(R): Select ST to set B channels to stereo
mode. Left and Right input signals drive Left and Right
power outputs. Select MO(R) for mono (bridge) operation.
With this setup the Right input channel drives BR and
BL power output,
so connect loudspeaker to BL- and BR+ for proper bridge
connection.
XOVER (80 Hz ÷ 3.3 kHz): B channels crossover point
adjustment. Rotating the knob you can select any
frequencies between 80 Hz and 3.3 kHz. The frequencies
above crossover point will be attenuated at 12dB/Oct.
A CH LEVELS: A channels input sensitivity adjustment
control. Set to 1 position. Use a CD as source, increase
head unit volume until output distorts, then decrease
volume by 1 step in order to eliminate distortion. Turn
LEVELS up until sound becomes distorted, then turn
LEVELS down a bit for optimum sound.
PASS MODE (HI - FULL - LO): A channels filter switch.
Select FULL to drive full range power outputs.
The full frequencies bandwidth will be output to power
output connectors. Select HI for Hi-pass to drive a
MIDRANGE / TWEETER. Select LO for Lo-pass to drive a
SUB / WOOFER / MIDRANGE.
MODE (ST - MO(R): Select ST to set A channels to stereo
mode. Left and Right input signals drive Left and
Right power outputs. Select MO(R) for mono (bridge)
operation. With this setup the Right input channel
drives AR and AL power output, so connect loudspeaker
to AL- and AR+ for proper bridge connection.
XOVER (50 Hz ÷ 500 Hz): A channels crossover point
adjustment. Rotating the knob you can select any
frequency between 50 Hz and 500 Hz. The frequencies
over crossover point will be attenuated at 12dB/Oct.
MULTIPLIER (x1 - x10): Select X1 for normal frequency
range (50 Hz - 500 Hz) of A channel filter (Hi-pass or
Lo-pass). Select X10 for crossover point multiplied by
10 (500 Hz - 5 kHz).
ON: Power LED. It lights up when you turn on the
amplifier. If all LEDs (10) (11) (12) (13) turn on at the same
time, the amplifier will shut down and you will have to
contact a service centre.
TH: Thermal status LED. It lights up when thermal
protection is active, above 85°C. The amplifier shuts
down until the chassis temperature goes below 75°C.
OVL: Overload status LED. It lights up when overload
occurs on the power output terminals. The amplifier
goes in muting for 3 seconds and this LED starts
flashing until you turn off the amplifier.
REMOVE THE CAUSE OF OVERLOAD.
SPK: Speaker status LED. It lights up when a speaker
touches the car body. The amplifier goes in muting for
3 seconds and this LED starts flashing until you turn
off the amplifier.
REMOVE THE CONTACT BETWEEN SPEAKER WIRE AND
CAR BODY.
1
6
7
8
9
2
3
4
5
8. TOP PANEL CONTROLS: SWITCHES AND ADJUSTMENT CONTROLS
5 7 86
1 3 42
12
10
11
13
9
10
11
12
13
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