Shure BETA58A Specification Sheet
Model Beta 58A Microphone
Specification Sheet
MODEL BETA 58
R
SUPERCARDIOID DYNAMIC VOCAL MICROPHONE
OVERVIEW
The Shure BETA 58A is a high-output supercardioid dynamic
vocal microphone designed for professional sound r einforcement
and project studio recording. It maintains a true supercardioid
pattern throughout its frequency range. This insures high gain
before feedback, maximum isolation from other sound sources,
and minimum off–axis tone coloration. The BETA 58A has a
shaped frequency response that is ideal for close–up vocals.
The superb performance of this microphone is not affected by
rough handl i n g b e c a u s e o f i t s rugged construction, proven shock
mount system, and hardened steel mesh grille. Typical applications for the BETA 58A include lead vocals, backup vocals and
speech.
FEATURES
S Frequency response tailored for vocals, with brightened
midrange and bass rolloff to control proximity effect
S Uniform supercardioid pattern for high gain before feedback
and superior rejection of off–axis sound
S Neodymium magnet for high signal–to–noise output
SPECIFICATIONS
Type
Dynamic (moving coil)
Frequency Response
50 to 16,000 Hz (see Figure 2)
NOTE: The curve below shows on-axis response at a distance
of 2 feet from a uniform sound source. Your response may
vary, depending on microphone position.
+10
3 mm
(1/8 IN.)
25 mm
(1 IN.)
0
51 mm
(2 IN.)
–10
0.6 m
(2 FT)
500 1,000 2,000 5,000 10,000 20,00050 100 20020
TYPICAL FREQUENCY RESPONSE
Polar Pattern
Supercardioid, rotationally symmetrical about microphone
axis, uniform with frequency (see Figure 3)
S Hardened steel mesh grille that resists wear and abuse
S Advanced pneumatic shock mount system that minimizes
transmission of mechanical noise and vibration
S Minimally effected by varying load impedance
S Legendary Shure quality and reliability
o
180
o
150
o
120
o
90
o
60
–20 dB
–15 dB
–10 dB
–5 dB
o
30
250 Hz
500 Hz
1000 Hz
150
30
o
o
120
o
90
o
60
o
150
o
120
o
90
o
60
30
o
180
o
–20 dB
–15 dB
–10 dB
–5 dB
o
00
2500 Hz
6300 Hz
10000 Hz
150
30
o
o
120
o
90
o
60
o
TYPICAL POLAR PATTERNS
Output Level (at 1,000 Hz)
Open Circuit Voltage: –51.5 dBV/Pa* (2.6 mV)
*1 Pa = 94 dB SPL
Impedance
Rated impedance is 150 W (290 W actual) for connection to microphone inputs rated low Z
MODEL BETA58 DYNAMIC VOCAL MICROPHONE
Specification Sheet
Phasing
Positive pressure on diaphragm produces positive voltage on
pin 2 with respect to pin 3. See Figure 4.
INTERNAL WIRING
Case
Silver blue enamel-painted die cast metal with hardened,
FURNISHED ACCESSORIES
Adjustable Stand Adapter A25D. . . . . . . . . . . . . . . . . . . . . .
5/8” to 3/8” (Euro) Thread Adapter 95A2050. . . . . . . . . . . .
Cartridge R176. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REPLACEMENT PARTS
Grille Assembly RK265G. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Plug (Connector) Assembly 90F1984. . . . . . . . . . . . . . . . . . . .
Storage Bag 26A21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPTIONAL ACCESSORIES
Windscreen A58WS Series (8 colors available). . . . . . . . . .
Isolation Mount A55M, A55HM. . . . . . . . . . . . . . . . . . . . . . . . . . .
7.6 m (25 ft.) Cable C25E, C25F. . . . . . . . . . . . . . . . . . . . . . . . . .
matte-finished, spherical steel mesh grille
Adjustable, Stand Adapter
Slip-in microphone mounting, unbreakable, adjustable through
180° with standard 5/8”-27 thread, black finish
Dimensions (See Figure 5)
50 mm
(2 in.)
160 mm
(6.5 in.)
OVERALL DIMENSIONS
Net Weight
278 grams (9.92 oz)
2
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