Yamaha M2500 Manual Do Utilizador

Control panel

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.

C

A/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.

D

EQ controls

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

1

2

3

5

6

L

8

M

4

J

K

9

7

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.

HIGH

Shelving

10 kHz

±15 dB

LOW

100 Hz