Line Pad; Hot Mic Pad - Shure SCM268 Manual

Line Pad

To insert a 50 dB line pad for a given microphone input, remove the specified resistor and short the solder points at the speci­
fied pc board locations. Refer to the following table:
Channel
1
2
3
4

Hot Mic Pad

Some condenser mics have a high output. In order to avoid overdriving the input stage, the user may need to set the input pot
lower than desired. To fix this problem, the user can place an 11 dB pad into the input gain stage of a selected channel.
1. Twist together the leads from one side of a 15 kΩ resistor and a 0.1 µF capacitor:
2. Solder the free ends of the resistor­capacitor combination into the holes at the jumper position indicated by the follow­
ing table and remove the corresponding surface mount resistor.
Channel
1
2
3
4
Remove Resistors:
R12, R13, R15
R22, R23, R25
R32, R33, R35
R42, R43, R45
Remove Resistor
R18
R28
R38
R48
Short Solder Points:
X11 and X14
X21 and X24
X31 and X34
X41 and X44
Insert Resistor-Capacitor Combi-
nation at Jumper
X17
X27
X37
X47
Shure Incorporated
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