• "1+3/2+4": For 4-channel input.
INPUT 1
INPUT 3
INPUT 2
INPUT 4
LINE OUT MODE switch
Sets the mode of signal output to LINE OUT 1
and 2 connectors. Signal output from all LINE
OUT connectors are unfiltered and not affected
by any FILTER settings.
• "THRU": Stereo output (through mode)
INPUT 1
INPUT 2
• "STEREO": Stereo output (summing mode)
INPUT 1
INPUT 3
INPUT 2
INPUT 4
• "ALL": Mono output (summing mode)
INPUT 1
INPUT 2
INPUT 3
INPUT 4
FILTER switch
Sets the filter mode for CH 1/2 and CH 3/4.
• "OFF": Turns the filter off.
• "HP" (high-pass): Frequencies lower than HPF
control setting are filtered.
• "LP" (low-pass): Frequencies higher than LPF
control setting are filtered.
Connector Panel (Front Panel)
INPUT
INPUT
VOLTAGE
1
L
LOW HIGH
R
2
INPUT VOLTAGE switch
Selects the type of input connection.
• "LOW": Select this for low-level (line level)
input connection using RCA extension cables
(not supplied).
• "HIGH": Select this for high-level (speaker
level) input connection using a speaker-wire-
to-RCA adaptor (not supplied).
INPUT connector
For details about the connection, see "Input
Connection" (page 9).
6
GB
CH 1
CH 3
CH 2
CH 4
LINE OUT 1
LINE OUT 2
LINE OUT 1
LINE OUT 2
LINE OUT 1
LINE OUT 2
LINE OUT
3
1
CH 1
L
BRIDGED
4
2
• "BP" (band-pass): The range of frequency for
the HPF control is automatically fixed at 50 Hz
– 500 Hz; the range of frequency for LPF
control is automatically fixed at 500 Hz – 5
kHz. Frequencies outside the range of HPF
and LPF settings are filtered.
RANGE switch
Sets the range of frequency for HPF (high-pass
filter) and LPF (low-pass filter) control.
• "50-500": Range of frequency for subwoofer.
• "500-5k": Range of frequency for midrange
speaker or tweeter.
HPF (high-pass filter) control
Depending on the RANGE setting, adjusts the
cutoff frequency in the range of 50 Hz – 500 Hz
or 500 Hz – 5 kHz.
LPF (low-pass filter) control
Depending on the RANGE setting, adjusts the
cutoff frequency in the range of 50 Hz – 500 Hz
or 500 Hz – 5 kHz.
INPUT SENS (input sensitivity) control
Adjusts the input level sensitivity for CH 1/2 and
CH 3/4. Turn the knob clockwise when the
output level of the connected audio devices is
low.
SPEAKER OUT terminal screw head
+12 V terminal screw head
REMOTE terminal screw head
GROUND terminal screw head
SPEAKER OUT
CH 2
CH 3
CH 4
R
L
R
BRIDGED
LINE OUT connector
For details about the connection, see "Output
Connection" (page 12).
SPEAKER OUT terminal
For details about the connection, see "Speaker
Connection" (page 11).
Fuse (40 A)
+12 V terminal
REMOTE terminal
GROUND terminal
+
12 V
REMOTE
GROUND
40 A
40 A