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MONITOR SPEAKERS
All speaker Hiring is high level and must be run in separate
cOlldui t m;ay from 10Vi level program circui.ts.
Stereo monitor-·
ing is providod to all studios as well as external lobby
sp~ak
ers.
45/60 to 6/8 ohm speaker matching transformers should be
used. Gates 478-Q291 speaker trans.formc:rs are satisfactory.
Tho
relay deck has 4-7 ohm back loading resistors across the lines
when the speakers are muted.
Do got parallel sPeakers across
the monitor outputs without using the matching transfoI'mers
just mentioned since serious damage to th0 monitor amplifiers
will rccsult if they are operated with a load of less than 4 ohms.
Speakers connect as folloVis to terminal block 6 .-
9.1?S,
ak
£E
Terminal
Studio
A
.-
Left
8A
8B
Studio
A
,.,.
Right
9A
9B
Studio B
-
Left
lOA
lOB
Studio B
._.
Ri.ght
llA
llB
Control
300m
-- Left
12A
12B
Control Room
.~"
Right
13A
13B
Lobby
-
Left
18A
18B
Lobby
.-
Right
20A
20B
The "hot" side of each speaker should connect to the A termi.nal
on
TB6
to insure proper phasing of speakers fo:r b8St
stcrc~Q
operation.
Studio A spoakers will mute "Then channel
1.
.l8ver switch is in
program or audition position.
Studio B speakers mute "hen chan--
nel 2 .lever switch is operated and control room speakers are
muted. when channel 3 lever
s.J1
tch is operated.
SP.t<;AKJ;B
CL~Q.QITS
MUST NOT BE
G'ROUND~~D.
-_
...
_--------
External monitor illj:;uts, if used, should connect to
TB5,
21\. .. -2:B
for the left channel and
TB5,
lA-.JB for the ri:;ht channel.
111CROPH0t:_~ I~ Cm~NJC!!9E§.
E3.ch microphone ch3.nnel has provisions for ·two stereo microphone
combinations, or a total of four microphones per chaILYJ.el.
switching between com.binations, or frolli stereo to monaural,
is done on the front panel.
Channell:
\.lith
39
in "mic 1" position and S12 in "stereo"
position, the console is set UP for stereo broadcasting from
microphones connected to the first
hID
inputs on terminal
block
1.
1·Ji.th S12 in "mono" position, the signal from micro-'
phone input; 1 is fGd through both preamps so that both left
The Executi.ve
6/26/62
'-7-'
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