Talkback Mic Connector; Talkback Level Control; Talkback Select Switches; Talkback Master Switch - Tascam M-300 Series Operation & Maintenance Manual

., TALKBACK MIC Connector

This female XLR-type connector allows a
ded icated talkback mic such as the TASCAM
model MC-70 1 G to be added to the M -3 1 2 and
M-320 mixers.
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TALKBACK LEVEL Control

This rotary volume control determines the signal
level sent from the TB mic to the selected busses.

., TALKBACK SELECT Switches

These six (6) switches provide bussing of the
Talkback signal to the following internal cir­
cuits; PGM Busses 1 -4, STE REO Left and Right
busses, AUX 1 , AUX 2, AUX 3, and AUX 4.
Any combination of switches may be selected
simu ltaneously.
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TALKBACK MASTER Switch

This large, protected, momentary switch con­
nects the output or the Talkback section to the
select switches. Pressing this switch also sends
an electronic control signal to the Solo Control
circuit which mutes the normal signal and
replaces it with the Talkback signal. This elimi­
nates any possibility of feedback loops through
the Monitor system.
& METER Select Switch
The last two meters, L and R, d isplay levels of
the signals selected on the M ET E R select switch
rack.
The meter L displays the signal level at the
STE R EO OUT L, EXT I N 1 L, EXT I N 2 L,
E F F ECT OUTPUT, AUX 1 OUTPUT or AUX 3
OUTPUT, when the respective METER select
switches are pressed . The meter R displays the
signal level at the STE R EO OUT R , EXT IN 1
R, EXT I N 2 R , MONO OUT, AUX 2 OUTPUT
or AUX 4 OUTPUT, depend ing on the METER
select switch sett ings.
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Light Terminal

This "BNC" connector is provided, 1 on the 3 1 2
and 2 on the 320 for the attachment of Little
Lights. The connectors supply 1 2 V , 5 W max.
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ADDITIONAL REAR PAN E L FEATURES
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SUB IN Jacks

These jacks all perform the same function -
they provide access into the i ntermediate stages
of various busses. The signals are added to the
buss just prior to the master level or output
fader control. This al lows externally produced
and mixed signals to be added to the internal
signals being mixed; thus, the signals from
another 300 Series or similar mixer could be
patched into the you rs. The second mixer would
then become the master, controlling the final
signals of both units.
PGM SUB I N Jacks 1 -4
Provide access to the tour sub-groups.
R and L SUB I N Jacks
Provide access to the main ST E R EO BUSSES.
E F F SUB IN Jacks
Provide access to the E F F ECT SEND buss.
AUX SUB I N Jacks
Provide access to the AUX 1 and 2 busses on
the M-308. And, the AUX 1, 2 , 3 and 4 busses
on the M-3 1 2 and M-320.

EXT SOLO and SENSE

This 1 /4" stereo phone jack allows external
solo signals and control signals to be added to
the on -board system. The Tip connector accepts
the external solo signal, the Ring connector
accepts the external solo control signal while
the sleeve is gound.

TAPE INs

Each Program section carries the TAPE IN
connectors tor two tape tracks or inputs. PRO­
G RAM 1 has TAPE INs 1 & 5, PGM 2 has
2 & 6, PGM 3 has 3 & 7, and PGM 4 has 4 & 8.
These are RCA-type IN jacks and are designed
to handle line signals with a nominal level of
- 1 0 dB. As mentioned previously, these signals
are routed to 1) the corresponding L I N E I N
connector (usable only if no connection is made
to the 1 /4" L I N E I N jack), and 2) to the respec­
t ive TAPE RTN select switch. Thus, retu rning
tape signals can be selectively routed to inputs,
input auxil iaries, or to the tape monitor sections.