S2 User Handbook
33
Placing jumper J5 over pins 1 & 2 will enable the muting functions on the line input. The
default setting is none (not tted).
Phantom Power
If you will be using a phantom powered microphone, jumper J6 must be placed over pins 1
& 2. If a normal microphone is used the jumper should be left over pins 2 & 3. With phantom
power selected a voltage of +48V is applied to pins 2 & 3 of the XLR connector. The voltage
is applied through 6k8 resistors limiting the current to 14mA. The default setting is with the
jumper over pins 2 & 3.
Microphone LF Response
The default setting of J7 is with the jumper over pins 1 & 2 which gives a full LF response to
the microphone. However, if your studio is acoustically poor and suers from a lot of low
frequency rumbles the LF response of the microphone can be rolled o at 125Hz, 6dB per
octave, to reduce these acoustic problems. This is achieved by removing jumper J7. Jumpers
J8 and J9 are not tted to the Mic/Line channel.
Enabling the Insert Point
The Insert point is useful for hooking up an outboard eects unit to be used with the
microphone, for example, a voice processor. The insert send signal is always available as a
line level balanced output. The insert return signal is enabled by placing jumper J10 over
pins 1 & 2. The insert return function is disabled in Line mode except when jumper J5, Mic
on Line Input, is set. The default setting of J10 is none (not tted).
Jumpers J11 and J12 are not tted to the Mic/line channel.
Mic Live Muting
The microphone input can be set to mute the control room or studio monitors. The default
setting of J13 over pins 1 & 2 will enable a live microphone to mute the control room
monitors. If it is required to mute the studio monitors the jumper should be shifted to pins
2 & 3. If no muting is required, the jumper should be removed. When a line level mic is used
on input 2, J15 sets the muting function. A jumper over pins 1 & 2 will mute the control
room monitors and over pins 2 & 3 will mute the studio monitors. Line input (input 2)
muting is only enabled when jumper J5, Mic on Line Input, is set. The default setting of J15
is none (not tted).
Timer Auto Start
The dual timer in the meterbridge can be set to start automatically from a fader open/
channel On signal. Jumper J14 determines which timer is set to auto-start. A jumper over
pins 1 & 2 will start Timer 1, shifting the jumper to pins 2 & 3 will start Timer 2. The default
setting of J14 is none (not tted). Please note that the Timer Auto Start is only available on
the Line Input.
Mic On Talkback Bus
To enable the microphone input to be added to the talkback bus, connect pins 7 (0V logic)
and 9 (Talkback mic enable) on the remote connector. This is useful if, for example, you
want to use the mic channel to talk to a caller connected to the cleanfeed output of the
telco channel.
S2CML MIC/LINE CHANNEL WITH EQ
S2CML MIC/LINE CHANNEL WITH EQ
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