D aux rtn 1 & aux rtn 2 jacks, Input ch insert in/out jacks, St out (stereo) l &r connectors – Yamaha MC1203 User Manual

Page 9: Hl-z and lo-z input connectors

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(D AUX RTN 1 & AUX RTN 2 jacks

The mono or stereo output from effect units fed by the
AUX SEND jacks can be returned to the main stereo

program mix via these jacks. Note that each AUX RTN
offers independent return inputs for the left and right
busses, accommodating the return signal from effect
units featuring stereo outputs. Nominal input level/
impedance is +4dB/600i2.‘

© AUX SUB IN & ST SUB IN jacks

These five jacks permit “cascading” two MC-series

mixing consoles to increase the number of available
input channels. The AUX OUT jacks from the first
(slave) console should be connected to the corre­
sponding AUX SUB IN jacks of the second (master)
console, and the STEREO outputs from the slave con­
sole should be connected to the corresponding ST
SUB IN jacks on the master console.

© INPUT CH INSERT IN/OUT Jacks

These jacks permit inserting compressors, limiters or
other types of external signal processing equipment

between the head amplifier and EQ stage of each
input channel. The jacks are tip-ring-sleeve types in
which the tip is SEND (the output from the head ampli­
fier), the ring is RETURN (the input to the EQ stage),
and the sleeve is ground. External equipment may be
inserted using “Y” cables which branch the SEND and

RETURN lines from a tip-ring-sleeve phone plug to

two separate mono phone plugs.
•The INSERT OUT signals are factory-wired to be

pre-EQ. This can be changed by internal jumpers to
be post-EQ.

• REFER THE ABOVE-MENTIONED REWIRING JOB

TO QUALIFIED YAMAHA SERVICE PERSONNEL!

) ST OUT (stereo) L &R connectors

The MC-series mixing consoles provide balanced
XLR-type connector outputs from the main stereo

buss, as well as unbalanced phone connectors. The
signal delivered is a stereo mix of the input channel
signals and the signals returned to the AUX RTN

jacks. The stereo OUT signal will normally be used to
drive a power amplifier and speaker system, powered

keyboard speakers or a main house mixing console.

The nominal output level/load impedance of the XLR-
type output signals is +4dB/600Q. The nominal output

level at the phone connectors is -6dB.

NOTE: The MC-series mixing console XLR-type con­

nectors are wired according to DIN specifica­

tions. Pin 1 is shield (ground), pin 2 is hot
(signal high) and pin 3 is cold (signal low).

INSERT OUT

<nn

INSERT IN

) Hl-Z and LO-Z INPUT connectors

Each input channel offers a choice of two input con­
nectors: a balanced LO-Z (low-impedance) XLR-type

connector and a Hl-Z (high-impedance) tip-ring-sleeve

1/4” phone jack. The LO-Z inputs are primarily

intended for electronic instruments having low-imped­
ance balanced outputs. The Hl-Z inputs will accept
either balanced or unbalanced signals from high-
impedance microphones, musical instruments or other
such equipment.

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