Yamaha gf16-12 Benutzerhandbuch

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Connectors
19
—Owner’s Manual
9
INSERT I/O jacks 1–20 {1–12 on the GF16/
12, 1–8 on the GF12/12}
These are TRS phone input/output jacks for 
inserting external effect processors between the 
EQ and channel fader of a monaural input chan-
nel. Nominal level is 0 dB. The pin wiring is 
shown in the following diagram.
0
INPUT B jacks 21–24 {13–16 on the GF16/
12, 9–12 on the GF12/12}
These are phono input jacks (unbalanced) for the 
stereo input channels. Nominal level is the same 
as the INPUT A jacks (6). On the stereo input 
channels, you can make connections both to the 
INPUT A jacks (6) and the INPUT B jacks (0), 
and use the A/B switch (page 8, 1 in the stereo 
input channel section) to select whether INPUT 
jack A or B will be used.
Be aware that in the case of the INPUT B jacks, 
the channel cannot be used as a mono input 
channel by inserting a plug only into 21L and 
23L. (If only 21L or 23L are connected, the signal 
will be sent only to the left channel.) The pin wir-
ing is shown in the following diagram.
A
AUX RETURN jacks 1/2
These are 1/4" phone input jacks (unbalanced) 
for connecting the stereo output of external effect 
processors, etc. The nominal level is +4 dB. If 
inputting a monaural signal, connect a plug only 
to the 1L or 2L jack. The pin wiring is shown in 
the following diagram.
1/4"  phone plug
1/4"  phone plug
1/4"  TRS phone plug
To processor’s input
From processor’s output
Connect to INSERT I/O jack  
Tip (send)
Tip (send)
Ring (return)
Sleeve (ground)
Sleeve (ground)
Tip (return)
Sleeve (ground)
Phono plug
Tip
Sleeve
1/4"  phone plug
Tip (send)
Sleeve (ground)