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(Discontinued) Close-Talk Voice Communication Microphone

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This product has been discontinued. For an alternative, please contact [email protected]

The Shure Specialty to General Communications Microphone Series 503 BG offers excellent voice fidelity while reducing background noise. Also use the 503BG in other close-talking applications such as paging and talkback.

The 503-BG features a low-impedance, moving coil type transducer with an integral humbucking coil and an attached two-conductor shielded cable with a built-in strain relief. It produces a frequency response with an essentially constant output voltage over the voice spectrum when used close to the sound source.

The 503BG’s case is aluminum with a black enamel finish. It mounts to a gooseneck, a fixed pipe or a microphone stand using a standard 5/8”-27 thread. To secure the mounted BG503, tighten the 4-40 screw with the supplied #4 Allen (hexhead) wrench.

→ Optimized performance in voice processing and computer voice recognition applications
→ Smooth frequency response with excellent fidelity in the voice range
→ Cardioid pickup pattern and close-talking operation keep unwanted signals and background noise at low levels
→ Constant output over voice spectrum when close talked
→ Humbucking coil minimizes undesirable hum effects such as CRT interference
→ Low-impedance design permits long cable runs in extreme hum fields
→ Small unobtrusive design does not interfere with CRT visibility
→ Rugged and reliable for years of consistent operation

Type Dynamic, unidirectional (cardioid), close-talking
Frequency Response 100 to 7,000 Hz
Impedance 170 ohms actual
Output Level (Open Circuit Voltage) �-61.5 dBV/Pa (.84mV)*; �-41.5 dB (8.4 mV)**; *1 Pa = 94 dBSPL; **0 dB = 1V/100 mbar
Polarity Positive pressure on diaphragm produces positive voltage on white conductor with respect to black conductor
Hum Pickup Maximum 15 dB equivalent SPL in m0e field
Cable 1.2 m (4 ft) two-conductor shielded
Case Aluminum with black enamel finish; stainless steel screen
Net Weight 128 g (4.5 oz)

 



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Prices and specifications subject to change without notice.