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Interconnect Cable Checklist
• Connect the head unit´s subwoofer line output with a good quality RCA to RCA cable
to the LINE INPUT SECTION CH3/4 of the amplifier.
• Connect the subwoofers with the terminal blocks (SPEAKER OUTPUT + MONO BRIDGED -
from CH1/2 and + MONO BRIDGED - from CH3/4) of the amplifier.
• The minimum final speaker impedance must not be below 4 Ohms per channel pair. Too low
speaker loads results in too high heat dissipation and may cause the amplifier runs into protection.
• Please observe speaker channel and polarity as printed by the speaker terminal block. Incorrect
phasing of the speakers results in total loss of bass response.
2-Channel-Mode: 2 Subwoofer / Mono bridged
FILTER - Switch & Control Channel 1/2 & Channel 3/4
• In 2-Channel-Mode with 2 subwoofers mono bridged set the FILTER selector to "LP"- position, which eliminates the higher
frequencies. The recommended crossover-frequency is between 60Hz - 150Hz, depending on the size and response of the subwoofer.
The lowpass adjustment can be done with the LP control. The crossover-frequency is continously variable from 50Hz - 500Hz.
When you use this setting the HP control is activated as a subsonic-filter. This filter eliminates too low frequencies. The threshold is
continously variable from 15Hz up to 1KHz and should be between 15Hz and 50Hz..
TWIN SUB - Switch
• When this switch is set on "ON" - position the same parameters of CH 3 & 4 for GAIN, HIGH PASS, LOW PASS and BASS BOOST
are also used for CH 1 & 2. When you use this setting the controls of channel-pair CH1/2 are out of function.
BASS REMOTE - Switch
• This switch should be set on "ON" - position, if you want to use remote control. When this switch is set on "ON" - position
BASS BOOST - Control of the amplifier is out of function.
INPUT MODE - Switch
• This switch should be set on "4CH" - position. Use the Inputs CH3 & CH4 for connetion with the head unit.
INPUT GAIN - Control Channel 3/4
• Turn the INPUT GAIN - controls on the amplifier to "MIN." - position.
• Turn the head unit volume control to about 80-90% of its full setting.
• Turn the INPUT GAIN - controls clockwise until you hear some distortion.
• Then turn back the INPUT GAIN - controls slightly until you can hear clean sound.
BASS BOOST - Control Channel 3/4
• The BASS BOOST controls the bass level from "0dB - +18dB" at 45Hz.
REMOTE CONTROL - Channel 3/4
• Allows to control Bass Boost via remote control from any location, e.g. from driver's seat.
Caution! Please use the Bass Boost carefully. The additional boost may result in clipping or overload.
Caution
Please avoid to connect speaker (-) to the ground or vehicle chassis.
H
4
O
M
OH
4
M
b O
u
S
u t
BASS REMOTE
Max.Min.
BASS REMOTE
4-CHANNEL AMPLIFIER - SPEAKER & RCA-CONNECTION
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