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2.1.1 The Input Module
1.
12345678
(Assign)
These locking gray switches assign the channel output to group mixing busses 1
through 8.
2.
ON/OFF/7-8 (Switch)
A3-position rotary switch is mounted concentrically with and determines the function
of the PAN pot. When the switch is ON, the PAN pot (inner knob) affects.signal which
is assigned to odd-numbered (counterclockwise rotation) and even-numbered (clock-
wise rotation) group busses.
When the switch is OFF, no signal flows through the PAN pot, but instead can be as-
signed directly to any of the 8 group busses from the channel.
When the switch is set to 7-8 position, the PAN pot only applies signal to group busses
7 and 8 (assuming their bus assign switches are engaged). This permits the group 7
and 8 busses to serve as a convenient stereo pair. At the same time, the other six group
busses can be assigned directly from the input channel, with the full level going to any
of these assigned busses regardless of PAN pot position.
3.
PAN (Pot)
This rotary control enables the channel output to be assigned between odd-numbered
(counterclockwise rotation) and even-numbered (clockwise rotation) group busses. A
center detent is provided for equal signal assignment to odd/even or left/right busses.
Center position does apply 3 dB less signal to each bus than the level obtained with full
left or right assignment so that the combined stereo signal adds up to constant power
at all PAN pot positions.
(EQUALIZER)
The input channel equalizer is divided into four bands, each with sweepable filter
frequencies. The high and low bands have shelving EQ curves, whereas the high-mid
and low-mid bands have peaking curves. The level (gain) is adjustable over a range
of 15 dB boost and 15 dB cut in each band.
4.
HIGH
1.6 ~ 16 kHz
The outer concentric knob sweeps the EQ Frequency between 1,600 and 16,000 Hz.
+15 ~ —15dB
The inner concentric knob adjusts the Gain of the set frequency band by plus or minus
15 dB. A center detent is provided for unity gain.
5.
HIGH-MID
0.8 ~ 8 kHz
The outer concentric knob sweeps the EQ Frequency between 800 and 8,000 Hz.
+15 ~ —15dB
The inner concentric knob adjusts the Gain of the set frequency band by plus ог minus
15 dB. A center detent is provided for unity gain.
6.
LOW-MID
0.16 ~ 1.6 kHz
The outer concentric knob sweeps the EQ Frequency between 160 and 1,600 Hz.
+15 ~ —15 dB
The inner concentric knob adjusts the GAIN of the set frequency band by plus or minus
15 dB. A center detent is provided for unity gain.
7.
LOW
40 ~ 400 kHz
The outer concentric knob sweeps the EQ Frequency between 40 and 400 Hz.
+15 ~ —15 dB
The inner concentric knob adjusts the GAIN of the set frequency band by plus or minus
15 dB. A center detent is provided for unity gain.
8.
EQ (In/Out switch)
This locking switch activates the channel EQ (switch in) or bypasses it completely.
Bypass allows for A-B comparison, and absolutely minimum signal degradation when
EQ is not needed.
2-2
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