Swivel Adapter 
Positive action, adjustable through 90° from vertical 
to horizontal, slip-out removal for handheld use, 
suitable for mounting on stand with %I"-27 thread 
Case 
Platinum beige enamel die casting with platinum 
beige steel screen 
Dimensions 
See Figure3 
(6-15/32 
IN.) 
r4 
7 
5 
4 
(2-1 
(27/32 
IN.) 
OVERALL DIMENSIONS 
FIGURE 
3 
Net Weight 
284 grams (10 oz) 
IMPEDANCESELECTION AND SWITCH LOCKING 
The microphone isshipped with the switch locked in 
the low-impedance(LO Z) position. 
A. To lock the switch "On" in low impedance, 
1. Loosen the screw holding the lockplate. 
2. Move the switch button to "On." 
3. Slide the lockplate up until the notch butts 
against the button. 
4. 
Tighten the screw. 
"OFF" 
LO 
zw 
L:K:DSjJ
"ON 
\ 
LOCKPLATE 
LOW-IMPEDANCELOCKPLATE POSITIONS 
FIGURE 
4 
B. To change the switch to the high-impedance (HI Z)
position, 
1. Remove the screw holding the lockplate. 
2. Move the switch to the "Off" (Center) position. 
3 . Removethe lockplate and replace the screw. 
4.
Removethe screw at the top of the switch. 
5. Place the lockplate in position* with the notch 
toward the switchbutton. 
6.
Replace and tighten the screw. 
*The lockplate has two positions, just as in low- 
impedance above: either locked inhighimpedance,or 
locked "On" in high impedance. 
HI 
Z 
"OFF" LOCKED 
HIGH-IMPEDANCELOCKPLATE POSITIONS 
FIGURE 
5 
PHASING 
To test two microphones for proper phasing, connect 
them to an amplifier and talk or sing into them while 
holdingthem three or four inchesapart. The sound from 
, 
the speakers should be the same when talking into 
1 
either microphone or directly between them if they are 
in phasewith each other. If the sound drops drastically 
or if a dead spot isfound when talking between the two 
microphones, the microphones are out of phase. All 
microphones should be tested in this manner to insure 
that they are in phase with each other. 
To change the phase of a balanced low-impedance 
microphone, interchange the cable conductor leads at 
one end of the cable. To change the phase in the 
microphone,the microphone cartridge leads must be in- 
terchanged (see Figure 6). This should be performed by 
your dealer, the Shure Factory Service Department, or 
other qualified service personnel. 
CARTRIDGE SWITCH TRANSFORMER SPINPROFESSIONALAUDIO 
CONNECTOR 
I 
1 
BUCK 
BUCK 
1 
BLUE 
INTERNALCONNECTIONS 
FIGURE 
6 
FURNISHED ACCESSORY 
............................. 
Swivel Adapter A25B 
OPTIONALACCESSORIES 
Line Matching Transformer 
.............. 
A95 Series 
...................... 
DeskStand S33B, S37A,S39A 
Isolation Mount 
............................ 
A55M 
................................ 
Dual Mount A26M 
Windscreen 
........................ 
A58WS Series 
Cable: 4.6m (15 ft) or 6.lm (20 ft) 
1-conductor with phone plug 
(High Impedance) 
................ 
C15A, C20B 
7.6m (25 ft) 2-conductor 
with 3-pin professional audio connectors 
................ 
(Low Impedance) C25J, C25F 
REPLACEMENT PARTS 
................................... 
Cartridge R15
................ 
Screen and Grille Assembly RK253G 
............................ 
OnlOff Switch 55A153 
GUARANTEE 
This Shure product isguaranteed innormal useto be 
free fromelectrical and mechanicaldefects for a period 
of one year from date of purchase. Please retain proof 
of purchase date. This guarantee includesall partsand 
labor. This guarantee is in lieu of any and all other 
guarantees or warranties, express or implied, and there 
shall be no recoveryfor any consequential or incidental 
damages. 
SHIPPING INSTRUCTIONS 
Carefullyrepackthe unit, haveit insured, and return it 
prepaid to: Shure Brothers Incorporated 
Attention: Service Department 
222 Hartrey Avenue 
Evanston, Illinois 60202-3696 
If outside the United States, return the unit to your 
dealer or Authorized Shure Service Center for repair. 
The unit will be returned to you prepaid.