Yamaha MX400 Manual Do Utilizador

 

Front and rear panels

 

1

 

This switch selects the signal source of the input module.

Select INPUT A (XLR type) or INPUT B (1/4” phone type).

 

2

 

This is a 20dB input pad (attenuator) that affects INPUT A and INPUT B.

If the level of the input signal is too high for adjustments to be made using 
the GAIN control alone, use the pad to attenuate the signal to an appropriate 
level. The pad is on when this switch is pressed in.

 

3

 

This controls the gain of the preamp for INPUT A and INPUT B. Gain is 
variable to a maximum of 44dB.

The GAIN control is always used in conjunction with the SIGNAL indicator 
and the PEAK indicator. Adjust the GAIN control so that the SIGNAL indi-
cator is always lit when an input signal is present, and the PEAK indicator 
lights occasionally. If the PEAK indicator lights frequently, lower the GAIN 
control to prevent the signal from distorting.The following table shows 
usual settings for the GAIN control.

 

4

 

When the post EQ signal level (nominal level 0dB) reaches –10dB, the SIG-
NAL indicator will light. This indicator indicates that a signal is being input.

When the post EQ signal level reaches 3dB before clipping level, the PEAK 
indicator will light. This indicator indicates that the signal has approached 
clipping level. Set the signal level based on the status of the PEAK indicator. 
For the procedure, see the explanation for 

 

3

 

 GAIN control.

 

Dynamic mic (low level)

–60 ~ –50

off

Condenser mic (high level)

–35

off

Audio device, electronic musical in-
strument (low level)

–20

off

Audio device, electronic musical in-
strument (high level)

+4

on

1

2

3

5

6

4

7

8

–16

–60

GAIN

–16

–60

GAIN

–16

–60

GAIN

–16

–60

GAIN