Shure_Beta_58A_User_Guide 电路图.pdf

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1、MODEL BETA 58? SUPERCARDIOID DYNAMIC VOCAL MICROPHONE 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

2、 high gain before feedback, maximum isolation from other sound sources, and minimum offaxis tone coloration. The BETA 58A has a shaped frequency response that is ideal for closeup vocals. The superb performance of this microphone is not affected by rough handling because of its rugged construction,

3、proven shock mount system, and hardened steel mesh grille. Typical applica- tions 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 f

4、or high gain before feedback and superior rejection of offaxis sound ? Neodymium magnet for high signaltonoise 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

5、 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 microph

6、one position. 0.6 m (2 FT) 51 mm (2 IN.) 25 mm (1 IN.) 3 mm (1/8 IN.) 5001,0002,0005,00010,00020,0005010020020 0 10 +10 TYPICAL FREQUENCY RESPONSE Polar Pattern Supercardioid, rotationally symmetrical about microphone axis, uniform with frequency (see Figure 3) 120o 150o150o 120o 180o 150o 120o 150o

7、 120o 180o 60o 90o 30o30o 60o 5 dB 10 dB 15 dB 20 dB 90o 30o 60o 90o 30o 60o 90o 5 dB 10 dB 15 dB 20 dB 00 10000 Hz 6300 Hz 2500 Hz 1000 Hz 500 Hz 250 Hz 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 ?

8、 (290 ? actual) for connection to mi- crophone inputs rated low Z Model Beta 58A Microphone Specification Sheet RadioFans.CN 收音机爱 好者资料库 Specification SheetMODEL BETA58 DYNAMIC VOCAL MICROPHONE 2 Phasing Positive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3. See Figu

9、re 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 (See Figure 5) 160 mm (6.5

10、in.) 50 mm (2 in.) OVERALL DIMENSIONS Net Weight 278 grams (9.92 oz) FURNISHED ACCESSORIES Adjustable Stand AdapterA25D. . . . . . . . . . . . . . . . . . . . . . 5/8” to 3/8” (Euro) Thread Adapter95A2050. . . . . . . . . . . . CartridgeR176. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11、 . . . . . . . . . REPLACEMENT PARTS Grille AssemblyRK265G. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Plug (Connector) Assembly90F1984. . . . . . . . . . . . . . . . . . . . Storage Bag26A21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . OPTIONAL ACCESSORIES WindscreenA58WS Series (8 colors available). . . . . . . . . . Isolation MountA55M, A55HM. . . . . . . . . . . . . . . . . . . . . . . . . . . 7.6 m (25 ft.) CableC25E, C25F. . . . . . . . . . . . . . . . . . . . . . . . . . RadioFans.CN 收音机爱 好者资料库