SoundCraft SM12 User Manual page 29

Input and Output Levels
Rear Connectors
26
Insert Sends, Group Outputs (electronically balanced)
Nominal level
Maximum output level
Output impedance
Insert Returns, External Inputs (electronically balanced)
Sensitivity
Maximum i/p level
Input impedance
External Inputs (1/4" 3pole Jack)
Tip
Ring
Sleeve
Insert Return (1/4" 3pole Jack)
Tip
Ring
Sleeve
Insert Send, (1/4" 3pole Jack)
Tip
Ring
Sleeve
Group Outputs, (3 pin male XLR)
Pin 1
Pin 2
Pin 3
+4dBu
+26dBu into 600Ω
<75Ω
+4dBu
+26dBu
>10KΩ balanced
Signal (Hot)
Signal (Cold)
Ground
Signal (Hot)
Signal (Cold)
Ground
Signal (Hot)
Signal (Cold)
Ground
Ground
Signal (Hot)
Signal (Cold)
Group Output Module