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OPERATING INSTRUCTIONS
WHITE
BLUE
BATT +12V
GND
REM
FUSE
POWER INPUT
LOGO BADGE
SPEAKER OUTPUT
MONO BRIDGED
– CH4 + – CH3 +
MONO BRIDGED
– CH2 + – CH1 +
REMOTE
CH1
CH2
CH3
CH4
LINE INPUTS
CH1/2
CH3/4
BALANCED
INPUTS
STEREO
MONO
12dB
24dB
INPUT MODE
4CH 2CH
LOW PASS
LOW PASS
HIGH PASS
HIGH PASS
X-OVER MODE CH1/2
X-OVER MODE CH3/4
LP/BP FULL HP
LP/BP FULL HP
POWER
PROTECT
L
R
BASS BOOST
BASS BOOST
LEVEL
LEVEL
CH1/2 CH1/2
CH3/4 CH3/4
LINE OUTPUT
SUMMED CH1/2/3/4
FULL RANGE
INTERCONNECTION
• Connect the RCA lineouts of the headunit with the RCA jacks LINE INPUT CH1/2 of the amplifier with appropriate high-value RCA
cables.
• Connect the tweeters with SPEAKER OUTPUT + CH1 - / + CH2 -.
Ensure that the total impedance load of each speaker is not lower than 2 ohms.
• Connect the low-/mid-speakers with SPEAKER OUTPUT + CH3 - / + CH4 -.
Ensure that the total impedance load of each speaker is not lower than 2 ohms.
Always ensure the correct polarity of the speakers. The interchange of plus and minus cause total loss of bass playback and could
damage the speakers.
INPUT MODE SWITCH
• Select the 2CH position on the INPUT MODE switch.
CROSSOVER SETTINGS CH1/2 (Tweeter)
• You must set the X-OVER switch to the HP Position (Highpass Mode) to avoid any damage by lower frequencies on the speakers.
The cut-off frequency is adjustable with the HI PASS controller and should be set between 2500Hz to 4000Hz, depending on the size
of the speakers.
IMPORTANT NOTE:Do not use the tweeter in any circumstances in full range mode (FULL) or do not replay a music signal without
checking the correct settings before. Turn before starting the LEVEL controller to the 6V position, then adjust the X-OVER switch
CH1/2 to position HP and set the controller HIGH PASS to the right to the 4 kHz position. The tweeter can be irreparably damaged
by already a very low volume levels without a properly adjusted crossover setting .
CROSSOVER SETTINGS CH3/4 (Low-/Mid-Speaker)
• You must set the X-OVER switch to the BP Position (Bandpass Mode) to avoid any damage by lower frequencies on the speakers.
The lower cut-off frequency is adjustable with the HI PASS controller and should be set between 60Hz to 150Hz. The higher cut-off
frequency is adjustable with the LOW PASS controller and should be set between 1800Hz to 3800Hz, depending on the size of the
speakers.
LEVEL CONTROLLER CH1/2 & CH3/4
• Turn the LEVEL controller of the amplifier to the 9V position.
• Turn the volume controller of the headunit to 80 - 90% of its full setting.
• Turn the LEVEL controller clockwise until you hear some distortion.
• Then turn back the LEVEL controller slightly until you hear a cleaner sound.
INTERCONNECTION EXAMPLE: 2-way Active System
Connect the stereo RCA output of the headunit with
LINE INPUTS CH1/2 of the amplifier.
Low-/Mid-
Speaker
1 – 8 Ohms
Low-/Mid-
Speaker
1 – 8 Ohms
L R
Tweeter
1 – 8 Ohms
Tweeter
1 – 8 Ohms
Schalterstellung CH3/4 = LP/BP
Schalterstellung CH1/2 = HP
Schalterstellung 2CH
STEREO 12dB
Do not connect loudspeaker cables with the vehicle’s chassis. Always ensure the correct polarity
of all connections. The interchange of plus and minus cause total loss of bass playback and could
damage the speakers.
REFERENCE NOTE
22


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