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Impedance
LO Z: Microphone rating impedance is 150 Ω (270 Ω actu-
al) for connection to inputs rated low impedance
HI Z: Microphone impedance is “High” for connections to
high-impedance microphone inputs.
Output Level (at 1,000 Hz)
LO Z HI Z
Open Circuit Voltage:* –56.0 dBV/Pa –37.5 dBV/Pa
(1.6 mV) (14 mV)
*1 Pa = 94 dB SPL
Phasing
Positive pressure on diaphragm produces positive voltage
on pin 2 relative to pin 3 in both HI Z and LO Z modes
Switch
Built-in ON/OFF switch, lockplate to lock switch ON
Connector
Three-pin professional (male XLR) type
Cartridge Shock Mount
Internal rubber vibration-isolator
Swivel Adapter
Positive action, break-resistant, adjustable through 180_,
slip-out removal for handheld use, designed for mounting
on stand with
5
/
8
in.–27 thread
Case
Platinum beige enamel die casting with platinum beige
die-cast grille and stainless steel screen
Dimensions
515SDX
167 mm
6.567 in
3.81 cm
1.5 in.
2.2 cm
0.85 in.
OVERALL DIMENSIONS
FIGURE 3
Net Weight
315 grams (11.1 oz)
Certification
Conforms to European Union directives, eligible to bear
CE marking; meets European Union EMC Immunity Re-
quirements (EN 50082–1: 1992).
IMPEDANCE SELECTION
The microphone is shipped connected for low impedance
operation. To change to high impedance, refer to Figure 4
and proceed as follows:
1. Remove plug element by turning slotted setscrew in
(counterclockwise). Use long-nose pliers to pull plug
element from case, but be careful not to stretch or break
wires.
2. Disconnect 2-terminal impedance selection socket from
rear of plug element by prying it off pin 3.
IMPEDANCE
SELECTION SOCKET
PLUG ELEMENT
IMPEDANCE SELECTION CONNECTOR END OF MICROPHONE
FIGURE 4
3. Reconnect impedance selection socket so that pin 3 of
plug element is now connected to RED (high-impe-
dance) lead.
4. Swivel socket so that it does not extend beyond edge of
connector (see inset in Figure 4).
5. Reinsert plug element into microphone; then tighten set-
screw by turning it clockwise.
TERMINAL HOUSING
CARTRIDGE
OFF
MALE PLUG
SWITCH
YELLOW
RED – HI Z
WHITE – LO Z
ON
BLUE
TRANSFORMER
2
1
3
BLACK (COMMON)
INTERNAL CONNECTIONS
FIGURE 5
FURNISHED ACCESSORY
Swivel Adapter A25D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPTIONAL ACCESSORIES
Shock Stoppert Isolation Mount A55M. . . . . . . . . . . . . . . .
Windscreen A85WS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Desk Stand S37A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vibration-Isolation Stand S39A. . . . . . . . . . . . . . . . . . . . . . . .
Cable, 4.6 m (15 ft) or 6.1 m (20 ft), 1-conductor, with
phone plug (Hi Z) C20HZ. . . . . . . . . . . . . . . . . . . . . . . . . .
Cable, 7.6 m (25 ft), 2-conductor, with 3-pin XLR
connectors (Lo Z) C25J, C25F. . . . . . . . . . . . . . . . . . . . . .
REPLACEMENT PARTS
Cartridge R180. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON/OFF switch RK57S. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Screen and Grille Assembly RK333G. . . . . . . . . . . . . . . . . .
For additional service or parts information, please contact
Shure’s Service department at 1-800-516-2525. Outside the
United States, please contact your authorized Shure Ser-
vice Center.