SoundCraft MBI 10 Series, User Manual

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section).
Optional Equaliser
8
The HF EQ control provides high frequency (above 8.5kHz) boost and cut of
+/-10dB. The MF EQ control provides medium frequency boost and cut of +/-10dB
at 3kHz. The LF EQ control provides low frequency (below 180Hz) boost and cut
of +/-10dB.
9
When the EQ switch is depressed, the EQ section, described above, is switched
into the signal path. A yellow LED glows to indicate this. When the switch is
released the signal path bypasses the EQ section.
10
When the 80Hz switch is depressed an 80Hz high-pass filter is switched into
the signal path. A yellow LED glows to indicate this. This control is useful for
filtering-out low frequency hum.
Level Control
11
The PAN control determines the position of the signal within the stereo image.
Rotation fully anticlockwise feeds the signal solely to the PROGRAM MIX L bus,
whilst rotation clockwise sweeps the image to the PROGRAM MIX R bus.
12
The GAIN control pr/- 15dB gain.
13
The PEAK LED glows to give a warning of possible overload.
Cueing
14
When the COMM circuit is active the Caller will hear a reduced programme
plus the signal on the T/B OUTPUT bus. This bus will carry the signal from the
inbuilt mic plus the signal from any of the Mono Input modules if their respective
Talkback Switches are closed. In addition the Caller’s input will be put on the PFL
MIX L & R buses and a PFL condition is signalled on the PFL Enable bus. The
Presenter will therefore hear the caller as a PFL. The LEDs in the COMM and PFL
switches will glow. The COMM circuit will be deactivated when the Fader is
moved away from the down position, or when the COMM switch is pushed a second
time.
15
When the PFL circuit is active the Caller’s input will be put onto the PFL
MIX L & R buses. The Presenter will therefore hear the caller as a PFL. The LED
in the PFL switch will glow. The PFL circuit will be deactivated when the Fader
is moved away from the down position.
Output To The Programme
16
The smooth-action, 100mm FADER gives a gain of unity (0dB) when it is in
the fully up position. The scale alongside the Fader indicates the attenuation, in dB,
for any position. There is a microswitch attached to the Fader which detects when
the Fader is in the fully down position. This microswitch helps to control many of
the features which are described in this section.
The input to the channel will be on-air whenever the Fader is up (unless the Divert
Telco Channel 29