Shure Beta 58 A

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Specifications

The Shure BETA 58A is a high-output supercardioid dynamic
vocal microphone designed for professional sound reinforcement
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 handling because of its rugged construction, proven shock
mount system, and hardened steel mesh grille. Typical applications
for the BETA 58A include lead vocals, backup vocals and
speech

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Tech Sheet

OVERVIEW
The Shure BETA 58A is a high-output supercardioid dynamic
vocal microphone designed for professional sound reinforcement
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 handling because of its 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

Frequency response tailored for vocals, with brightened
midrange and bass rolloff to control proximity effect

Uniform supercardioid pattern for high gain before feedback
and superior rejection of off–axis sound

Neodymium magnet for high signal–to–noise output

Hardened steel mesh grille that resists wear and abuse

Advanced pneumatic shock mount system that minimizes
transmission of mechanical noise and vibration

Minimally effected by varying load impedance

Legendary Shure quality and reliability
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.
0.6 m
(2 FT)
51 mm
(2 IN.)
25 mm
(1 IN.)
3 mm
(1/8 IN.)
20 50 100 200 500 1,000 2,000 5,000 10,000 20,000
0
–10
+10

TYPICAL FREQUENCY RESPONSE
Polar Pattern
Supercardioid, rotationally symmetrical about microphone
axis, uniform with frequency

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
(290
actual) for connection to microphone
inputs rated low Z
Model Beta 58A Microphone
Specification Sheet
MODEL BETA58 DYNAMIC VOCAL MICROPHONE Specification Sheet
2
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,
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
160 mm
(6.5 in.)
50 mm
(2 in.)
OVERALL DIMENSIONS
Net Weight
278 grams (9.92 oz)
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