SoundCraft SM12 User Manual page 36

Input and Output Levels
Master Module
INSERT SENDS, MIX, WEDGE AND FOH TALKBACK OUTPUTS
(Electronically Balanced)
nominal level
maximum output level +26dBu into 600Ω
output impedance
OSCILLATOR OUTPUT (Electronically Balanced)
nominal level
maximum output level +14dBu into 600Ω
output impedance
PFL, AFL LEFT AND RIGHT OUTPUTS (Ground Compensated)
nominal level
maximum output level +20dBu into 2kΩ
output impedance
INSERT RETURNS, GROUP & STEREO EXTERNAL AND FOH
TALKBACK INPUTS (Electronically Balanced)
sensitivity
maximum i/p level
input impedance
PFL EXTERNAL INPUTS (Electronically Balanced)
sensitivity
maximum i/p level
input impedance
TALKBACK MICROPHONE INPUT (Electronically Balanced)
sensitivity
maximum i/p level
input impedance
PHONES OUTPUT (Unbalanced)
nominal level
maximum output level +20dBu into 600Ω
output impedance
+4dBu
<75Ω
+4dBu
<75Ω
-2dBu
<75Ω
+4dBu
+26dBu
>10KΩ balanced
-2dBu
+20dBu
>10kΩ balanced
-20dBu to -50dBu
0dBu
2kΩ
+4dBu
0dBu into 8Ω
50Ω
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