Specifications

M2500—Owner’s Manual 41
Input/output characteristics

Input specifications

*1 0 dB=0.775 Vrms.
*2 Balanced.
*3 Unbalanced.
*4 Balanced (T=HOT, R=COLD, S=GND).
*5 Unbalanced.
*6 Unbalanced (T=SIGNAL, R=GND, S=GND).
*7 Unbalanced (T=OUTPUT, R=INPUT, S=GND).
*8 n=56, 48, 40, 32 or 24
*9 Sensitivity is the lowest level that will produce an output of +4 dB(1.23 V), or the nominal output level when the unit is set to maximum level.

Output specifications

*1 0 dB=0.775 Vrms.
*2 Balanced.
*3 Unbalanced (T=OUTPUT, R=INPUT, S=GND).
*4 Unbalanced.
*5 n=56, 48, 40, 32 or 24
Connection PAD Gain
Trim Actual Load
Impedance For Use With
Nominal
Input Level *1 Connector In
Mixer
Sensitivity *9 Nominal Max before Clip
CH INPUT
(1–n) *8
0–60
3 kΩ50–600 Ω Mics
&
600 Ω Lines
–80 dB(0.078 mV) –60 dB(0.775 mV) –40 dB(7.75 mV)
XLR-3-31 type *2
26 –54 dB(1.55 mV) –34 dB(15.5 mV) –14 dB(155 mV)
0–16 –36 dB(12.3 mV) –16 dB(123 mV) +4 dB(1.23 V)
26 –10 dB(245 mV) +10 dB(2.45 V) +30 dB(24.5 V)
ST CH 1A INPUT
[L, R]
–30 5 kΩ600 Ω Lines –50 dB(2.45 mV) –30 dB(24.5 mV) –10 dB(245 mV)
+10 –10 dB(245 mV) +10 dB(2.45 V) +30 dB(24.5 V)
ST CH 1B INPUT
[L, R]
–20 10 kΩ600 Ω Lines –40 dB(7.75 mV) –20 dB(77.5 mV) 0 dB(0.775 V) Phono Jack *3
+10 –10 dB(245 mV) +10 dB(2.45 V) +30 dB(24.5 V)
ST CH INPUT
[L, R] (2–4)
–30 5 kΩ600 Ω Lines –50 dB(2.45 mV) –30 dB(24.5 mV) –10 dB(245 mV) Phone Jack(TRS) *4
+10 –10 dB(245 mV) +10 dB(2.45 V) +30 dB(24.5 V)
TALKBACK IN 10 kΩ50–600 Ω Mics –66 dB(0.388 mV) –50 dB(2.45 mV) –20 dB(77.5 mV) XLR-3-31 type *5
MATRIX SUB IN [L, R] 10 kΩ600 Ω Lines –2 dB(0.616 V) +4 dB(1.23 V) +24 dB(12.3 V) Phone Jack(TRS) *6
STEREO [L, R] MONO/C SUB IN –6 dB(388 mV)
CH INSERT IN (1–n) *8
10 kΩ600 Ω Lines
–26 dB(38.8 mV)
0 dB(0.775 V) +20 dB(7.75 V) Phone Jack(TRS) *7
STEREO [L, R] MONO/C INSERT IN
GRP/AUX INSERT IN (1/7–8/14)
AUX INSERT IN (1–6) –10 dB(245 mV)
Connection Actual Source
Impedance For Use With
Nominal
Output Level *1
Connector In Mixer
Nominal Max before Clip
STEREO OUT [L, R]
MONO/C OUT
GRP/AUX OUT (1/7–8/14)
AUX/GRP OUT (7/1–14/8)
AUX OUT (1–6)
MONITOR OUT [L, R, MONO/C]
MATRIX OUT (1–8)
150 Ω600 Ω Lines +4 dB(1.23 V) +24 dB(12.3 V) XLR-3-32 type *2
CH INSERT OUT (1–n) *5
STEREO INSERT OUT [L, R]
MONO/C INSERT OUT
GRP/AUX INSERT OUT (1/7–8/14)
AUX INSERT IN (1–6)
600 Ω10 kΩ Lines 0 dB(0.775 V) +20 dB(7.75 V) Phone Jack(TRS) *3
PHONES OUT [L, R] 100 Ω8 Ω Phones 10 mW 20 mW Stereo Phone Jack *4
40 Ω Phones 30 mW 75 mW