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CHANNEL SECTION:
CHANNELS 1-4
1.
MIC INPUT: XLR balanced, low-impedance channel input optimized for
a microphone or other low-level source. Pin 2 is the positive input.
Because of the wide range of gain adjustment, signal levels as high as
+10 dBV (2.45 V RMS) can be accommodated. When the phantom
power is enabled, this connector has +48 V on pins 2 and 3 with pin 1 as
the ground reference. (The Mic Input can also be found on Channels
5 - 8.) See caution on page 7.
2.
HI-Z/LINE INPUT: Channels (1 -4) are 1/4" balanced TRS high-
impedance inputs. The tip is the positive input, which can also be used for
unbalanced inputs. A Pad (#3) switch is provided to attenuate strong
signals present at this input. Within the same channel, the mic input and
the Hi-Z/Line input cannot be used simultaneously.
3.
PAD: Attenuates the input signal by 25 dB. If you find that barely
touching the Level control (#4) gives you an enormous increase in
volume or if distortion occurs, try using the Pad switch. In addition to
increasing the dynamic range, the channel input can now accommodate
a higher input level before clipping. This may be necessary with a close
mic on loud guitar amplifiers or drum kits. The Pad switch can also be
found on Channels 5 and 6 which are line level inputs only.
4.
GAIN: Sets the signal level sent to the Left and Right bus. (The Gain
control can also be found on Channels 5 - 9.)
5.
MON: Adjusts the level of the channel signal (pre-EQ) that is added to
the Monitor mix. (The Monitor control can also be found on Channels
5 - 9.) This control is independent of the main channel Gain control (#4).
6.
LOW EQ: A shelving type of active tone control that varies the bass
frequency levels ±15 dB at 70 Hz. It will add depth to thin signals, or
clean up muddy ones. (The Low control can also be found on Channels
5 - 9.)
7.
MID EQ: Mid ±15 dB. This control sets the amount of cut and boost at
the mid-frequency. (The Mid control can also be found on Channels
5 - 8.)
8.
HIGH EQ: A shelving type of active tone control that varies the treble
frequency levels ±15 dB at 12 kHz. It is designed to remove noise or to
add brilliance to the signal, depending on the quality of the source. (The
High control can also be found on Channels 5 - 9.)
9.
EFX: This control varies the level into the digital effects processor bus
adjusting the signal level from the particular channel to the digital
processor. (The effects control can also be found on Channels 5 - 8.)
The channel Gain control (#4) also affects this level.
4
1
5
5
0
0
10
10
EFX.
EFX.
0
-15
+15
HIGH
0
0
-15
-15
+15
+15
MID
MID
0
0
-15
-15
+15
LOW
5
5
0
0
10
10
MON
MON
0dB
0dB
-3
-3
+3
+3
-6
-6
+6
+6
+20 GAIN
+20 GAIN
1
PAD
-25dB
HI Z/
HI Z/
LINE
LINE
MIC
MIC
9
8
7
6
5
4
3
2
1
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