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Close-Talk Voice Communication Microphone
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 503BGs 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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Audio Video Supply Inc.
4575 Ruffner St
San Diego, CA 92111
Prices and specifications subject to change without notice.