Yamaha Yamaha Mixing Consol, M2500 owner manual Stereo input channels, Gain B control, B switch

Control panel

Stereo input channels

GAIN

A

	1
+10	–30
B
	2
+10	–20
B	3
A

HI

–15 +15

LO4

–15 +15

5

EQ

010

AUX1 PRE

010

AUX2

0	10
AUX3
		0	10
		AUX14
0	10
AUX4		BAL
	PRE
0	10			8
AUX5		L	R
		ODD	EVEN
0	10
AUX6		1-2	ST
6
		3-4	MONO	9
0	10	5-6
AUX7
		7-8
0	10	7
AUX8
	PRE
0	10		CHECK
AUX9			ON
				J
0	10	ON/EDIT
AUX10
0	10		10 PEAK
AUX11				K
			5 NOM
0	10		SIGNAL
AUX12
			0
	PRE
0	10		5
AUX13
			10
0	10
AUX14			20
BAL	C
			30
L	R		40
ODD	EVEN		50

L	60	M
		PFL

The M2500 provides four stereo input channels, allowing line-level stereo sources such as sub-mixers, effect processors, and CD players to be input. Of the stereo input channels 1–4, channel 1 provides both XLR and RCA phono input jacks, and you can select and use one of these. Channels 2–4 provide a pair of TRS phone input jacks. For this reason, there are slight differences between the controllers of channel 1 and channels 2–4. Our explanation here will be based on stereo input channel 1, and any differences for ste- reo input channels 2–4 will be explained later.

A GAIN A control

This adjusts the input sensitivity of the signal that is input from the XLR connectors of the ST CH 1 INPUT A jacks (page 26). Levels of +10 dB to –30 dB are supported. If the A/B select switch (3) is in the B () position, this control will have no effect.

B GAIN B control

This adjusts the input sensitivity of the signal that is input from the RCA phono connectors of the ST CH 1 INPUT B jacks (page 26). Levels of +10 dB to –20 dB are supported. If the A/B select switch (3) is in the A () position, this control will have no effect.

CA/B switch

This selects the input jacks that will be used for stereo input channel 1. When the switch is in the upward position (), the ST CH 1 INPUT A jacks can be used. When the switch is in the downward position (), the ST CH 1 INPUT B jacks can be used.

Note: Since stereo input channels 2–4 have only one set of inputs, only one GAIN control is pro- vided. (Nor is there an A/B select switch.) This control will adjust the input sensitivity of the sig- nal that is input from the TRS phone connectors for the ST CH 2–4 INPUT jacks (page 26). Levels of +10 dB to –30 dB are supported.

GAIN

+10 –30

D EQ controls

This is a two-band equalizer. The equalizer type, cen- ter frequency, and gain range of each band is shown below.

Band	Type	Center	Gain
		frequency
HIGH	Shelving	10 kHz	±15 dB
LOW		100 Hz

6 M2500—Owner’s Manual