M2500—Owner’s Manual 25Rear panel

Monaural input channel

input/output jacks

AINPUT jacks

These are XLR-3-31 type input jacks (balanced). If
the rear panel PHANTOM MASTER switch and the
+48 V switch of the corresponding monaural input
channel are on, phantom power will be supplied. The
nominal input levels and pin wiring are as follows.
Nominal input
• –26 dB pad switch= on / +10 dB to –34 dB
• –26 dB pad switch= off / –16 dB to –60 dB
BINSERT I/O jacks
These are TRS phone jacks for inserting external
effect units into each monaural input channel. The
nominal level is 0 dB. The pin wiring is as follows.
17
INPUT
INSERT
I/O0dB
18
INPUT
INSERT
I/O0dB
19
INPUT
INSERT
I/O0dB
20
INPUT
INSERT
I/O0dB
21
INPUT
INSERT
I/O0dB
22
INPUT
INSERT
I/O0dB
23
INPUT
INSERT
I/O0dB
24
INPUT
INSERT
I/O0dB
2
1
Male XLR plug 1 (ground)3 (cold)2 (hot)
1/4" phone plug
1/4" phone plug
1/4" TRS phone plug To processors input
From processors output
Connect to INSERT I/O jack
Tip (send)
Tip (send)
Ring (return)
Sleeve (ground)
Sleeve (ground)
Tip (return)
Sleeve (ground)