F1
It permits to adjust LO-PASS filter cut-off
frequency between 40 Hz and 500 Hz.
9
F2
It permits to adjust HI-PASS filter cut-off
frequency between 40 Hz and 500 Hz.
10
F1 Q
It permits to adjust the LO-PASS filter
Q, varying the filter gain at its cut-off
frequency. It is useful to linearise the
system response in the HI-PASS and
LO-PASS crossover point.
8
LO-PASS
It permits to choose whether to send a
full range signal (BYPASS) or a 24dB/Oct.
LO-PASS signal for low frequencies (ON)
to the amplifier stage.
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 (see
“Subsonic filter cut-off frequency
modification”).
LEVEL
It permits to adjust the amplifier input
sensitivity and sets its output level.
6
PHASE
(0 /180 )
It permits to invert the phase of the
signal on the speakers output terminal
blocks. It is especially useful to
acoustically align subwoofer and front
system.
7
5
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.
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