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Commercial Audio Series Mixers
page 11
Operation Manual
One DIP-switch selection enables Channel 1 as the priority input, which
mutes all other inputs to Out 1. In the 28M only, another DIP switch
selec tion enables Channel 5 as the priority input, which mutes all other
inputs to Out 2. In the 28M only, another set of DIP switches enable
Channel 1 as the priority input into both Out 1 and Out 2, effectively
muting any input.
To set the mixer for normal mode with no priority:
Set the OUT CONFIG DIP switch as follows:
1 ON
2 OFF
3 OFF
4 OFF
5 ON
6 OFF
To give priority to the Channel-1 input to Out 1 only:
Set the OUT CONFIG DIP switch as follows:
1 OFF
2 ON
3 OFF
4 OFF
Also, wire a SPST switch to the PRIORITY connector between COM and
CH 1 OUT 1. Close the switch when you want the Channel-1 input to mute
all other inputs feeding Out 1.
To give priority to the Channel-5 input to Out 2 only:
Set the OUT CONFIG DIP switch as follows:
5 OFF
6 ON
Also, wire a SPST switch to the PRIORITY connector between COM and
CH 5 Out 2. Close the switch when you want the Channel-5 input to mute
all other inputs feeding Out 2.
2.6 Input Routing
In the 28M, any input can be assigned to Output 1, Output 2 or both. The
two DIP switches labeled INPUT ROUTING are used (Figure 2.7). Follow
the settings printed on the back panel next to the INPUT ROUTING switch.
For example, to send input Channel 3 to Output 1 and Output 2, turn on
DIP switches 13 and 14.
2.7 Phantom Power
To turn on phantom power on all mic inputs, turn on the switch number 7
in the AMP CONFIG DIP switch.
2.8 Priority Muting
A back-panel AMP CONFIG DIP switch (Figure 2.8) can assign Input Ch. 1
or Input Ch. 5 (28M only) as the priority input for each mixer output, which
temporarily mutes the remaining inputs. Muting is activated by contact
closures.
For example, suppose you confi gured Channel 1 as the priority input. Mic
1 is plugged into Channel 1. A press-to-talk switch in Mic 1 is wired to the
Priority connector in the mixer-amplifi er. When you press the mic switch,
all other signals are muted so you can make an announcement on Mic 1.
Figure 2.7 Input Routing DIP Switches
Figure 2.8 AMP CONFIG DIP Switch
To give priority to the Channel-1 input to Out 1 and Out 2:
Set the OUT CONFIG DIP switch as follows:
1 OFF
2 ON
3 ON
4 ON
Also, wire a SPST switch to the PRIORITY connector between COM and
CH1 Out 1. Close the switch when you want the Channel-1 input to mute
all other inputs feeding Out 1 and Out 2.
Note: The routing confi guration is extremely versatile. Many confi gura-
tions for additional applications not highlighted in this document can be
created by examining the signal fl ow in the block diagram on page 13.
AMP CONFIG