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Appendix
MG12/4FX
27
■ Input Specifications
Where 0 dBu = 0.775 V and 0 dBV= 1 V
* Input sensitivity: the lowest level that will produce the nominal output level when the unit is set to maximum gain.
■ Output Specifications
Where 0 dBu = 0.775 V and 0 dBV= 1 V
Specifications and descriptions in this owner’s manual are for information purposes only. Yamaha Corp. reserves the right to change or modify
products or specifications at any time without prior notice. Since specifications, equipment or options may not be the same in every locale,
please check with your Yamaha dealer.
For European Model
Purchaser/User Information specified in EN55103-1 and EN55103-2.
Inrush Current: 3A
Conformed Environment: E1, E2, E3 and E4
Input Connector Gain
Input
Impedance
Appropriate
Impedance
Sensitivity*
Nominal
Level
Max. Before
Clipping
Connector
Specifications
MIC INPUT
(CHs 1 to 4)
–60
3 kΩ 50–600 Ω mic
–80 dBu
(0.078 mV)
–60 dBu
(0.775 mV)
–40 dBu
(7.75 mV)
XLR-3-31 type
(balanced)
–16
–36 dBu
(12.3 mV)
–16 dBu
(123 mV)
+4 dBu
(1.23 V)
LINE INPUT
(CHs 1 to 4)
–34
10 kΩ 600 Ω line
–54 dBu
(1.55 mV)
–34 dBu
(15.5 mV)
–14 dBu
(155 mV)
Phone jack (TRS)
(balanced [T: hot;
R: cold;
S: ground])
+10
–10 dBu
(245 mV)
+10 dBu
(2.45 V)
+30 dBu
(24.5 V)
ST CH MIC INPUT
(CH5(L)/CH6(R),
CH7(L)/CH8(R))
–60
3 kΩ 50–600 Ω mic
–80 dBu
(0.078 mV)
–60 dBu
(0.775 mV)
–40 dBu
(7.75 mV)
XLR-3-31 type
(balanced)
–16
–36 dBu
(12.3 mV)
–16 dBu
(123 mV)
–10 dBu
(245 mV)
ST CH LINE INPUT
(CH5(L)/CH6(R),
CH7(L)/CH8(R))
–34
10 kΩ 600 Ω line
–54 dBu
(1.55 mV)
–34 dBu
(15.5 mV)
–14 dBu
(155 mV)
Phone jack
(unbalanced)
+10
–10 dBu
(245 mV)
+10 dBu
(2.45 V)
+30 dBu
(24.5 V)
ST CH INPUT
(CH9(L)/CH10(R),
CH11(L)/CH12(R))
10 kΩ 600 Ω line
–30 dBu
(24.5 mV)
–10 dBu
(245 mV)
+10 dBu
(2.45 V)
Phone jack
(unbalanced);
RCA pin jack
CH INSERT IN
(CHs 1 to 4)
10 kΩ 600 Ω line
–20 dBu
(77.5 mV)
0 dBu
(0.775 V)
+20 dBu
(7.75 V)
Phone jack (TRS)
(unbalanced
[T: out; R: in;
S: ground])
RETURN (L, R) 10 kΩ 600 Ω line
–12 dBu
(195 mV)
+4 dBu
(1.23 V)
+24 dBu
(12.3 V)
Phone jack
(unbalanced)
2TR IN (L, R) 10 kΩ 600 Ω line
–26 dBV
(50.1 mV)
–10 dBV
(316 mV)
+10 dBV
(3.16 V)
RCA pin jack
Output Connectors Output Impedance
Appropriate Imped-
ance
Nominal Level
Max. Before
Clipping
Connector Specifications
ST OUT (L, R) 150 Ω 600 Ω line +4 dBu (1.23 V) +24 dBu (12.3 V)
XLR-3-32 type (balanced)
Phone jack (TRS)
(balanced [T: hot; R: cold;
S: ground])
GROUP OUT (1-2)
AUX SEND
EFFECT SEND
150 Ω 10 kΩ line +4 dBu (1.23 V) +20 dBu (7.75 V)
Phone jack (TRS)
(impedance balanced
[T: hot; R: cold; S: ground])
CH INSERT OUT
(CHs 1 to 4)
150 Ω 10 kΩ line 0 dBu (0.775 V) +20 dBu (7.75 V)
Phone jack (TRS)
(unbalanced [T: out; R: in;
S: ground])
REC OUT (L, R) 600 Ω 10 kΩ line –10 dBV (316 mV) +10 dBV (3.16 V) RCA pin jack
C-R OUT (L, R) 150 Ω 10 kΩ line +4 dBu (1.23 V) +20 dBu (7.75 V)
Phone jack (TRS)
(impedance balanced
[T: hot; R: cold; S: ground])
PHONES 100 Ω 40 Ω phone 3 mW 75 mW Stereo phone jack