Shure 515BSM User Manual

MODEL 515BSM
UNIDIRECTIONAL DYNAMIC MICROPHONE
The Shure Model 515BSM is a low-impedance,
dynamic microphone designed for hand-held or fixed use.
The unidirectional (cardioid) pickup pattern provides excel-
lent reproduction of voice and effective rejection of feed-
back. The microphones are supplied with a push-to-talk
switch and a four-conductor, retractable cable (2 shielded
conductor).
These microphones are especially suitable for use in
paging systems, public speaking, stage performance, and
public address systems. They are also highly recom-
mended for other applications requiring both hand-held
and fixed installation operations. The microphones are
wired with the microphone circuit normally open for use in
parallel microphone installations.
Features
• Frequency response optimized for announcing, narra-
tion, and paging applications
• Cardioid pickup pattern: symmetrical about axis
• Neodymium magnet for high signal-to-noise ratio
• Shock-mounted cartridge for quiet operation and low
stand/handling noise
• Tough diecast, locking grille and handle resist wear from
constant use and handling
• Built-in push-to-talk switch controls both microphone
circuit and relay or control circuit
©2005, Shure Incorporated
27E3088 (Rev. 4)
Model 515BSM User Guide
SPECIFICATIONS
Type
Dynamic (moving coil)
Frequency Response
80 to 15,000 Hz (see Figure 1)
3
1 cm ( / in.)
8
.6 m (2 ft)
TYPICAL FREQUENCY RESPONSE
FIGURE 1
Polar Pattern
Cardioid (unidirectional). Effective rejection of sound
at rear of microphone is uniform at all frequencies,
while front pickup characteristics are uniform about
axis (see Figure 2).
o
180
o
150
o
150
o
120
120
o
90
–20 dB
–15 dB
o
60
–10 dB
–5 dB
o
30
o
30
0
250 Hz
500 Hz
1000 Hz
TYPICAL POLAR PATTERN
FIGURE 2
Impedance
150 Ω rated (180 Ω actual)
Output Level (at 1,000 Hz)
Open Circuit Voltage*: –57.0 dBV/Pa* (0.14 mV)
*1 Pa=94 dB SPL
o
180
150
o
150
o
o 120
o
o
90
90
–20 dB
–15 dB
o
60
o
60
–10 dB
–5 dB
30
o
30
0
2500 Hz
6400 Hz
10000 Hz
Printed in U.S.A.
o
o
120
o
90
o
60
o