DIP
SWITCH
GAIN
▄ ▀ ▀
+ 44 dB
▄ ▀ ▄
+ 41 dB
▄ ▄ ▀
+ 38 dB
▄ ▄ ▄
+ 35 dB
▀ ▀ ▀
+ 32 dB
▀ ▀ ▄
+ 29 dB
▀ ▄ ▀
+ 26 dB
▀ ▄ ▄
+ 23 dB
10
BRIDGE A+B switch
Important: make sure the amplier is turned off before setting this switch.
If set to ON, channels A and B are bridged (the respective LED
13
lights up).
Leave it on OFF for normal 2-channel operation.
See the ‘Operation modes’ manual section.
11
BRIDGE C+D switch
Important: make sure the amplier is turned off before setting this switch.
If set to ON, channels C and D are bridged (the respective LED
14
lights up).
Leave it on OFF for normal 2-channel operation.
See the ‘Operation modes’ manual section.
12
GAIN common setting
The three dip-switches allow to set the common gain for all the four channels, from
+23 dB to +44 dB (3 dB steps).
See the following table and select the most appropriate setting.
13
BRIDGE (A+B) LED
When lit: the channels A and B are bridged (see
10
BRIDGE A+B switch).
14
BRIDGE (C+D) LED
When lit: the channels C and D are bridged (see
11
BRIDGE C+D switch).
15
FOUR INDEPENDENT CHANNELS / A+B+C+D INPUT TO ALL OUTPUTS switch
Important: make sure the amplier is turned off before setting this switch.
See the ‘Operation modes’ manual section.
16
Power cord input.
Connect the power cord only to a mains socket outlet with a protective earthing
connection.
SWITCH POSITION MODE FUNCTION
OFF (released)
FOUR INDEPENDENT
CHANNELS
Standard operation: all the four channels are independent (but in
the bridge mode).
Each channel input is only sent to its respective speaker and
balanced outputs.
ON (pushed)
A+B+C+D INPUT
TO ALL OUTPUTS
All the four inputs are mixed into a single signal sent to all the
speaker and balanced outputs.
This mode is useful to get a four-channel mono amplier
(1 input sent to all the 4 speaker outputs).