9
CONTROLS PANEL
F4
It permits to adjust the woofer 12dB/Oct.
LO-PASS filter and the Mid-Tweeter
12dB/Oct. HI-PASS filter crossover
frequencies between 150 Hz and 5 kHz. It
works only in Multichannel configuration.
9
F2
It permits to adjust the 12dB/Oct. HI-PASS
filter cut-off frequency between 40 and
150 Hz; this filter is for woofer in
Multichannel configurations and for Front
system in Front-Rear configurations.
10
F3
It permits to adjust the Rear system
12dB/Oct. HI-PASS filter cut-off frequency
between 40 Hz and 150 Hz. It works only in
Front-Rear configuration.
8
F1
It permits to adjust the subwoofer
24dB/Oct. LO-PASS filter cut-off frequency
between 40 Hz and 150 Hz.
7
SAFETY (red LED)
It indicates that the amplifier protection
circuits are on. In order for the amplifier to
work again, you need to switch the system
off and then on after 10 seconds at least.
We recommend to check all connections
before switching the amplifier on again.
If LED stays on, please contact Audison
authorised after sale centres.
11
REAR M-TW (Level)
It adjusts the amplifier Rear channels input
sensitivity and sets its output level.
In multichannel configuration, the
adjustment concerns the channels for the
high frequencies HI-PASS filter (M-Tw).
5
FRONT WF (Level)
It adjusts the amplifier Front channels input
sensitivity and sets its output level.
In multichannel configuration, the
adjustment concerns the channels for the
woofer BAND-PASS filter (Wf ).
6
SUB (Level)
It adjusts the amplifier Sub channel input
sensitivity and sets its output level.
4
SUBSONIC
It permits to eliminate subsonic
frequencies; these sounds cannot be
heard by human ears but cause useless
and damaging stress to amplifier and
speakers.
Subsonic filter can be bypassed
(
BYPASS
) and it is pre-set at
20 Hz
. Its
cut-off frequency can be adjusted
between 16 and 32 Hz through 4 Hz
steps; this occurs by replacing the special
resistors located into a socket which can
be reached through the setting panel in
the amplifier bottom.
3
16
CONFIGURATIONS
by-pass
ON
SU
B
SO
N
IC
IN FRONT
L
N
S
F
4
1
5
0
÷
5
K
Hz
12dB / Oc
t.
HI
LO
mute
M
O
D
E
F/ R
MUL
T
F
2
4
0
÷
1
5
0
Hz
12dB / Oc
t.
0
.2
÷
5
V
L
E
V
E
L
F
ro
n
t/W
f
L
R
L
R
3 CH
FR-RIGHT
FRONT
-AMP
REAR
SUB
FRONT
RIGHT
FRONT
REAR
L
R
3 CH
FR-LEFT
REAR-AMP
L
R
0
.2
÷
5
V
L
E
V
E
L
R
e
a
r/M
-T
w
C
H
S
E
LE
C
T
5 Ch
3 Ch
IN
S
E
L
E
C
T
2 IN
1 IN
L
N
S
L
N
S
F
3
4
0
÷
1
5
0
Hz
12dB / Oc
t.
IN REAR/OUT
L
R
IN SUB
L
N
S
L
R
SUB
AMP
0
.2
÷
5
V
L
E
V
E
L
S
u
b
V
C
A
o
p
tio
n
a
l
m
o
d
u
le
BY - P
ASS
module
BYP12
IN
S
U
B
F+R
IN-SUB
MIX
MIX
F
1
4
0
÷
1
5
0
Hz
24dB / mono
R
Hz
24dB / mono
su
b
so
n
ic
1
6
÷
3
2
R
LEFT
W
F
M
-T
W
FR
O
N
T
W
F
R
EA
R
TW
EETER
SU
B
L
R
L
R
STEREO SIGNAL
INVER
TED
AMPLIFIER
NON INVER
TED
AMPLIFIER
BAND-P
A
SS
LO
-P
A
S
S
HI-P
ASS
INDEPENDENT FREQUENCY C
ONTROL
NON INDEPENDENT FREQUENCY C
ONTROL
BLOCK DIAGRAM
