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Shure R128 User guide
Model R128 Installation Guide
SM87 Replacement Cartridge
Use the following instructions to replace the cartridge in Shure
SM87 condenser microphones.
1. Remove the microphone grille by unscrewing it in a
counter-clockwise direction.
4. Attach the pin of the green lead to the socket in the cartridge
base. Solder the blue lead to the terminal on the cartridge.
5. Install the new cartridge by slipping the rubber loops over the
shock-mount posts.
IMPORTANT: Align the pin sockets as illustrated below.
25–40 Watts
2. Using tweezers or small needle-nosed pliers, grasp the pin at
the end of the green lead and gently unplug it from the cartridge. Next, unsolder and remove the blue lead from the terminal on the cartridge.
CAUTION: To prevent damage, use a soldering iron capable of
generating no more than 40 watts of power.
25–40 Watts
IMPORTANT : Once you have installed the cartridge, take care to position the blue and green lead
wires so they do not touch each other, the cartridge
or any other part of the microphone. Otherwise,
noise problems may occur.
3. Remove the old cartridge by pulling off the rubber loops from
the three shock-mount posts.
© 2005, Shure Incorporated
27D2102 (Rev. 6)
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