Shure C123 User Guide

Microflex)C123 Replacement Kit

User Guide

Disassembly

1. Remove screw in top of the grille, then lift off the grille.

2. Remove screw in bottom of base while holding the microphone
interface in place. Remove the microphone interface.

3. Remove the microphone cartridge and gently screw it into the
new microphone interface.

Attaching the Cable to the Microphone

1. Route the stripped and tinned end of the new cable through the
rear exit hole in the base as shown in Figure 1A. Leave about
six centimeters (2 1/2 inches) of cable between the micro­phone interface and the strain relief posts.

NOTE: Alternately , for certain t ypes of permanent or “hidden cable”
installations, you may want to run the cable through the exit hole
in the bottom of the base.

2. Seat the microphone interface on the locating stud in the cen­ter of the base. Hold the microphone interface in place as you
turn the base over. Insert the screw through the base and
thread it into the microphone interface. Tighten firmly.

3. Route the cable between the posts as shown in Figure 1B. A
visual aid for the path is visible on the die casting between the
posts. Press the cable firmly down between the posts.

4. Gently manipulate the excess cable between the microphone
interface and the base to form a service loop and lay it to the
side of the microphone interface as shown in Figure 1B.

5. Set the grille back into place on the die casting. Thread the
screw through the perforated metal grille and into the micro­phone interface and tighten.

6 cm (2.5 in. )

Strain Relief

Microphone

Interface

Locating

Stud

Posts

A

Connector Assembly and Attachment

1. Run the cable through the end cap, cable clamp, and insulation
spacer.

Housing

Insert Assembly

Insulation Spacer

Cable Clamp

End Cap

CONNECTOR ASSEMBLY

FIGURE 2

2. Attach wires and ONE of the two shield leads to the insert as­sembly and solder into place. See the wiring diagram in
Figure 3.

PIN 1 = SHIELD (use only ONE of

3

1

4

2

the shields)

PINS 3 and 4 = BLACK LEAD

(jumped)

PIN 2 = RED LEAD

WIRING DIAGRAM

FIGURE 3

3. Fold the remaining loose shield lead back. Push the circular
end of the cable clamp onto the insulating spacer and slide
them over the loose shield lead until the insert assembly has
been properly mated with the insulating spacer. Slide these in­terlocking components into the housing (only the cable clamp
and loose shield lead should be exposed).

4. Solder the shield lead onto the interior floor of the cable clamp
(see Figure 4).

IMPORT ANT: Make sure that there is at least 2 mm (1/16 in.) from
the end of the cable jacket to the crim ping fingers on the cable
clamp.

2 mm (1/16 in.)

of insulation before

clamp finger

Solder to cable clamp floor

ROUTING THE CABLE

2001, Shure Incorporated
27B2998 (AK)

Service Loop

FIGURE 1

Shield

B

SOLDERING THE SHIELD TO CABLE CLAMP

FIGURE 4

5. Crimp cable clamp fingers around cable jacket and shield.
Slide the end cap over the cable clamp and thread onto the
housing until snug.

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222 Hartrey Avenue, Evanston, IL 60202–3696, U.S.A.
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Printed in Mexico

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