Shure 515BSLX User Manual

MODEL 515BSLX
UNIDIRECTIONAL MICROPHONE
The Shure Model 515BSLX is a dynamic (moving coil), low-im-
pedance, cardioid (unidirectional) microphone designed for mount-
ing on a gooseneck or fixed pipe with a 5/8 in.-27 thread. The
cardioid pickup pattern provides excellent voice reproduction with
effective rejection of feedback and background noise. The
515BSLX is especially suitable for use in communications, paging,
and talkback systems. The microphone is supplied with a slide
switch controlling the microphone audio and a relay circuit, permit-
ting hands-free operation. The microphone comes with a 1.8 m (6
ft) four-conductor, two conductors shielded, cable.
The 515BSLX is wired with the microphone circuit normally
open for use in parallel-wired microphone installations.
FEATURES
• Rolled-off low-frequency response combined with a
smooth high-frequency rise for clear and intelligible voice
pickup
• Symmetrical cardioid pickup pattern minimizes feedback
• Shock-mounted cartridge for quiet operation and low
stand/handling noise
• Neodymium magnet for high signal-to-noise ratio
• Heavy-duty zinc, die-cast, locking, metal grille protects
cartridge and resists wear
• Built-in slide switch controls both microphone circuit and
relay or control circuit
• Backed by the Shure 2-years warranty
2005, Shure Incorporated
©
27E2975 (Rev. 9)
Model 515BSLX User Guide
SPECIFICATIONS
Type
Dynamic (moving coil)
Frequency Response (Figure 1)
80 to 15,000 Hz
+20
1 cm (3/8 in.)
+10
0
.6 m (2 ft)
–10
-20
2
20 50 100
TYPICAL FREQUENCY RESPONSE
Polar Pattern (Figure 2)
Cardioid (unidirectional). Effective rejection of sound at rear of
microphone is uniform with frequency; front pickup characteris-
tics are symmetrical about axis.
180°
150° 150°
120°
90°
–20 dB
–15 dB
60°
–10 dB
–5 dB
30°
30°
0
250 Hz
500 Hz
1000 Hz
TYPICAL POLAR PATTERN
Impedance
150 Ω rated (180 Ω actual)
Sensitivity (at 1,000 Hz)
Open Circuit Voltage
(1 Pa = 94 dB SPL)
Polarity
Positive pressure on diaphragm produces positive voltage on
the RED lead with respect to the BLACK lead
Switch
Built-in, double-pole double-throw slide switch. Lockplate to lock
switch ON
3 4 5 6 7 9 8 2 3 4 5 6 7 9 8
1000 10000
Hz
FIGURE 1
180°
150°
120°
120°
90°
90°
–20 dB
–15 dB
60°
60°
–10 dB
–5 dB
30°
0
2500 Hz
6400 Hz
10000 Hz
FIGURE 2
LOZ
-57.0 dBV/Pa (1.4 mV)
Printed in U.S.A.
20000
150°
120°
90°
60°
30°