Audio Developments AD144 - Manual (Page 32)

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Monitor 2 output functions in a similar way to monitor 1 except when a channel PFL
(pre-fader listen) switch is selected. In this case logic changes monitor 2 to read the
appropriate channel – mono PFL from a mic/line module and stereo PFL from a
stereo-line module. When PFL is released, monitor 2 reverts to signals derived using
monitor 2 select functions. PFL has a separate level control (36) to balance the signal
against other signals presented to monitor 2 outputs.
Main outputs A to D and L.R may be auditioned on left and/or right monitor 2 output,
using function switches (12) to (16). Selection of A, B, C or D presents a mono signal
of the selected output to monitor 2 output. A stereo signal of A and B can be achieved
by selecting both A and B. A will be presented to left monitor 2 output and B to right. A
stereo image of C and D can be auditioned by selection of C and D. Selection of L.R
(16) presents the left and right master outputs to monitor 2 left and right outputs
accordingly.
Main auxiliary outputs may be auditioned on monitor 2 output by use of rotary switch
(17), marked DIRECT. Position one of this switch routes signals to monitor 2 output
determined by the selection (12) to (16). Position six of the DIRECT rotary switch
(MON 1) routes monitor 1 output signals to monitor 2.
Monitoring of return signals is achieved using rotary switch (35) in conjunction with the
direct-return, push switch D/R (18). Selection of D/R routes the appropriately selected
return signals to monitor 2 output as follows:
RIL
- Return 1 left signal to monitor 2 left & right
RIR - Return 1 right signal to monitor 2 left & right
RIS - Return 1 left signal to monitor 2 left output
and return 1 right signal to monitor 2 right output
R2L - Return 2 left signal to monitor 2 left & right
R2R - Return 2 right signal to monitor 2 left & right
R2S - Return 2 left signal to monitor 2 left output
and return 2 right signal to monitor 2 right output
DEC (19) introduces a matrix amplifier into the monitor 2 path. See M-S NOTES for
further information.
MONO (20) mixes a monitor 2 stereo output to mono and presents the mono signal to
the left and right outputs of monitor 2.
Monitor 2 output level control (21) is calibrated at the fully clockwise position of its
rotation.
For any L-R signal appearing on the monitor module, DEC (11) and (19) will reveal
mono compatibility (M) on monitor left, and out-of-phase components (S) on monitor
right.