from the primary signal path
and inserted into the Mix-B
(Monitor) signal path.
Associated switching in the
AUX send section affects the
Mix-B (Monitor) Buses (see
paragraph 8).
13. I/O CHANNEL SOLO,
WITH LEVEL CHECKING.
Each inline input/output
channel shall include
stereo-in-place solo switch-
ing that allows the indi-
vidual channel to be singled
out of the mix and audi-
tioned alone or in combina-
tion with any other signals
in the control room and
studio outputs. Additionally,
activating the channel’s solo
shall allow the channel’s
output level to be observed
on the solo/main bargraph
meters, reflecting the L/R
balance the signal has on
the main L/R mix Buses.
14. I/O CHANNEL MUTE
WITH INDICATOR.
Each
inline input/output channel
shall include a mute switch
to turn off the individual
channel’s output to all
Buses and the direct output.
The LED indicator associ-
ated with the mute switch
shall be yellow, and shall be
lighted when the channel is
muted.
15. I/O CHANNEL ASSIGN-
MENT SWITCHES.
Each
inline input/output channel
shall be fitted with five
routing switches, allowing
the channel’s output to be
routed to any combination
of subgroup and/or main
L/R Buses, in stereo pairs, or
to a combination of single
Buses (odd OR even) in
conjunction with the
channel’s pan control.
16. MASTER SECTION -
SUBMASTERS.
The audio
mixer’s master section shall
include faders, routing, solo
switching, metering, insert
sends with insert returns
(patching), and tape outputs
for each of the 8 submasters.
Overall subgroup level
control shall be provided by
a 100mm fader that incorpo-
rates a complex precision
resistive network to deliver
true logarithmic attenuation,
down to –100dB. Submaster
signal routing shall be
governed by a mono assign
switch that sends the
submaster output to both
the left and right main
outputs (single assign switch
must be “in” to activate
mono switch), and/or by a
single Bus assign switch that
routes the submaster to only
the left output (odd num-
bered) or to only the right
output (even numbered).
Each submaster shall be
equipped with stereo-in-
place solo switching that
allows the individual sub-
master to be singled out of
the mix and auditioned
alone or in combination
with any other signals in the
control room and/or studio
outputs. Twelve segment
LED bargraph meters shall
be provided for each
submaster, and shall indicate
peak levels from –40dBU to
+10dBU, with green LED’s
indicating levels from –
40dBU to 0dBU inclusive,
and yellow LED’s indicating
levels from +2dBU to
+10dBU inclusive. Meters
reading OdB will reflect an
output level of +4dBU or –
10dBV, depending on the
position of the Submaster
Output Level Switch. Each
submaster shall have a low
impedance insert send that
may be used separately as
an output alone, or in
conjunction with its associ-
ated return for insert chan-
nel patching. In addition,
each of the eight submasters
shall have three submaster
outputs via balanced/
unbalanced transformerless
1
/
4
" TRS connectors config-
ured in pairs for use with 16
recording tracks (1/9/17,
2/10/18, 3/11/19, 4/12/20,
5/13/21, 6/14/22, 7/15/23,
8/16/24), and mounted on
the rear panel lower apron.
Reference operating level for
the tape outputs (and tape
returns) shall be globally
selectable for either –10dBU
or +4dBU via two switches:
one controls outputs 1/9/17,
2/10/18, 3/11/19 and
4/12/20; the other controls
outputs 5/13/21, 6/14/22,
7/15/23, & 8/16/24 (see
paragraph 3).
17. MASTER SECTION - L/R
MIX.
The audio mixer’s
master section shall include a
stereo fader for setting the
overall output level delivered
via the unbalanced
transformerless
1
/
4
" TS
connectors in the master
section designated main mix
L/R, and duplicated on 3-pin
balanced XLR connectors on
the rear panel lower apron.
Overall L/R mix level control
shall be provided by a
100mm stereo fader that
incorporates a complex
precision resistive network to
deliver true logarithmic
attenuation, down to –100dB.
18. MASTER SECTION - MIX
B (MONITOR).
The audio
mixer’s master section shall
include a rotary master level
control to govern the overall
output level and/or mix level
of signals on the Mix-B
(Monitor) Bus. In addition, a
switch associated with the
level control shall assign/
unassign Mix-B (Monitor)
signals to the main L/R
output Buses, but shall have
no effect on signals appearing
at the Mix-B (Monitor)
outputs. Mix-B (Monitor)
signals shall be made avail-
able to the outside world as a
separate group via two
3
3
