Yamaha gf24-12 ユーザーズマニュアル

 

Front and rear panel

 

■

 

Here are the two stereo input channels provided 
by the GF24/12, GF16/12, and GF12/12. The 
INPUT 21/22 and 23/24 {13/14 and 15/16 on the 
GF16, and 9/10 and 11/12 on the GF12/12} jacks 
(

 

6

 

 and 

 

0

 

 of the connector section) are pairs of 

connectors that let you control a stereo signal 
using one input channel. If a cable is connected 
only to the INPUT A 21L or 23L jack {13L or 15L 
on the GF16/12, or 9L or 11L on the GF12/12}, 
the source will be controlled as a monaural sig-
nal.

 

1

 

This switch selects input jacks. When the switch 
is in the upward position (

) the input signal of 

the INPUT A jack is selected (page 18, 

 

6

 

 of the 

connector section). When the switch is in the 
downward section (

), the input signal of the 

INPUT B jack is selected (

 

0

 

 of the connector 

section).

 

2

 

This adjusts the input sensitivity. The range of 
levels that can be accommodated is +10 dB to
–34 dB.

 

3

 

This is an on/off switch for the high pass filter 
that cuts the frequency range below 80 Hz at a 
slope of 12 dB/octave. The high pass filter is on 
when the switch is pressed in.

 

4

 

This is an indicator that detects post-EQ clipping. 
It will light 3 dB before clipping, indicating that 
the signal is near the clipping level. If this LED 
lights, lower the GAIN control (

 

2

 

).

 

5

 

This is a three-band equalizer that boosts/cuts 
each frequency band over a 

 

±

 

15 dB range. The 

center frequency and equalizer type for each 
band is shown below.

The response is flat when the knob is in the “

 

▼

 

” 

position.

4

1

A

8

9

B

2

3

5

7

0

6

C

 

HIGH

10 kHz

shelving

MID

250 Hz

peaking

LOW

100 Hz

shelving