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Model A412B Microphone Base
User Guide
©2005 Shure Incorporated
27D2977 (Rev. 4)
Printed in U.S.A.
GENERAL
The Shure A412B microphone base allows gooseneck micro-
phones to be quickly mounted in situations where permanent in-
stallation is impractical. The angled XLR input connector maintains
a low profile, while inside the base there is ample room for custom
circuitry.
INSTALLATION
Attaching a Microphone to the Base
Insert the XLR connector on the microphone into the female XLR
connector on the top of the microphone base.
Securing the Microphone Base to a Surface (Optional)
1. Install two No. 6 wood screws, two inches apart, on the mount-
ing surface (see Figure 1, diagram A).
2. Place the key holes over the screw heads and push the micro-
phone into position. Adjust the height of the screws as neces-
sary to secure the microphone (see Figure 1, diagram B).
SECURING THE A412B TO A MOUNTING SURFACE
FIGURE 1
SPECIFICATIONS
Dimensions
See Figure 2
Weight
0.68 kg (1.5 lbs) net
0.91 kg (2.0 lbs) packaged
REPLACEMENT PARTS AND ACCESSORIES
Cable (10 ft)........................................................................C121
Base Plate Bumpers...................................................80A8053A
DIMENSIONS
FIGURE 2
REMOVING THE BACK PLATE
FIGURE 3
A
B
2 in.
5.16 cm
(2 1/32 in.)
3.0 m
(10 ft)
11.6 cm
(4 9/16 in.)
16.2 cm
(6 3/8 in.)
WIRING DIAGRAM
(3/8 in.)
1 cm