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FEATURES:
• PROTECTION and POWER LED indicators
• Bass EQ: 45Hz bass boost from 0dB to 9dB
• X-OVER:
- LP/BP: Selects built in LOW PASS filter, variable from 30Hz to 150Hz
- HP: Selects built in HIGH PASS filter, variable from 10Hz to 1.2KHz
- FULL: Bypasses all crossovers for full frequency range operation
Note that the LOW PASS signal is MONO
- In the LP position, the HIGH PASS filter acts as a subsonic filter. When the
HP switch is higher adjusted than 150Hz, you can hear no sound
- When the LP mode is selected, a 0 to +9dB at 45Hz BASS EQ is active
• The REMOTE jack enables a dash mount control for the BASS EQ in LP mode only
• INPUT LEVEL sensitivities are variable from 0.2volts to 6volts
• INPUT MODE: In the 2CH mode, all four channels are supplied signal from CH1/2 RCA jacks.
In the 4CH mode, CH1/2 are supplied signal from CH1/2 RCA jacks and CH3/4 are supplied
signal from CH3/4 RCA jacks.
3. Crossover frequency control checklist:
N/A for full range operation.
FULL RANGE
STEREO LINE INPUTS
FULL RANGE
SPEAKERS
1. Interconnect cable checklist:
Connect the 4 inputs of the amplifier to a Radio/CD with quality RCA cables.
2. Crossover switch:
-1/2CH X-OVER: FULL
-3/4CH X-OVER: FULL
4 CHANNEL FULL RANGE STEREO
3. Input Mode:
4CH
4. Line Level, Bass EQ, Low Pass & High Pass:
Refer the section “Setting up systems after installation for best performance.” on
page 2.
5. Bass Remote Module:
Plug in the optional Remote Bass Module to the REMOTE jack and
control the Bass EQ setting for CH3/4.
6. Speaker Connections:
Connect the subwoofer- to 3CH- and the subwoofer+ to 4CH+ terminal. Connect
the remaining speakers in standard stereo wiring to 1CH and 2CH.
IMPORTANT: Minimum final loudspeaker impedance must be not lower than
4ohms in mono operation and 2 ohms in stereo operation.
This illustration shows how to use your 4 channel amplifier as a 3 channel unit
by taking advantage of the mono bridging capability on all Discus amplifiers.
1. Interconnect cable checklist:
-1/2CH: Connect the inputs of channel pair1/2 to a suitable stereo source with
quality RCA cables.
-3/4CH: Connect mono line input via Y-adapter from mono source or single
Left or Right RCA from stereo source.
IMPORTANT: Do not connect the Left and Right stereo signals
together to achieve a mono signal as this will damage the output
stage of source and possibly the input stage of the amplifier.
2. Crossover switch:
-CH1/2 X-OVER: FULL
-CH3/4 X-OVER: LP
3 CHANNEL OPERATION
MONO LINE INPUT
VIA Y-ADAPTER
TO BATTERY +12v
VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
TO BATTERY +12v
VIA FUSE
REMOTE TURN-ON
CHASSIS GROUND
MONO SUBWOOFER
ENG
FULL RANGE
STEREO LINE INPUT
4 - C H A N N E L - A M P L I F I E R S
DSC480/DSC4125
• Each model is capable of 4ohms or 2ohms operation per channel, or 4ohms mono
11


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