Yamaha M2500 Talkback/oscillator section, MONO/C switch, Oscillator on switch, MIC jack

Talkback/oscillator section

	PINK
1	10kHz
	1kHz
	100Hz
2	ON	6
		AUX1-2
	OSCILLATOR	7
		AUX3-6

8

AUX7-10

Control panel

F AUX 1-2 switch

G AUX 3-6 switch

H AUX 7-10 switch

I AUX 11-14 switch

J ST switch

K MONO/C switch

These switches send the talkback or oscillator signal to AUX buses 1–2, AUX buses 3–6, AUX buses 7–10, AUX buses 11–14, the STEREO bus, and/or the MONO/C bus. Each switch can be turned on/off independently.

9

AUX11-14

3

J

MICST

AUX

1 3 5 7 9 11 13

2 4 6 8 10 12 14

STEREO L R

MONO/C

4

K

MONO/C

010

TB/OSC

5

ON

TALKBACK

A OSCILLATOR select switches

These switches select a test tone oscillator, and start oscillation. Only one switch at a time can be selected. The corresponding indicator will light to show the switch that is turned on.

•PINK switch

This generates pink noise.

•10 kHz/1 kHz/100 Hz switches

These generate a sine wave of the corresponding fre- quency.

Note: The oscillator cannot be used together with talkback. If you wish to use the oscillator, you must turn off the talkback ON switch (5).

B OSCILLATOR ON switch

This switch turns the oscillator on/off.

C MIC jack

This is an XLR-3-31 input jack (unbalanced) for con- necting a talkback mic. Mics of 50–600Ω impedance are supported.

D TB/OSC control

This adjusts the level of the talkback or oscillator.

E ON switch

This is an on/off switch for the talkback. If this is on, the indicator above the switch will light. If you wish to use the oscillator, you must turn off this switch.

from CPU

MIC

ON TB/OSC

3 5 4 67 8 9 JK

M2500—Owner’s Manual 21