Beomic BM5

BeoMic Microphone

Production: 1961 - unknown

Beomic BM5 was a monophonic/stereophonic ribbon microphone. It was shock- and blast-proof and included a ball swivel mechanism to tilt to any position.

Beomic BM5 technical specifications

Dimensions 263 mm high, 27 mm diameter
Hum sensitivity -146 dB
Impedance 200 ohms
Response 30-13000 c/s +/- 2,5 dB
Sensitivity M position,85 dB below 1V/µbar
T position: 4 dB lower

Response Frequency characteristics:

“M” (Music) Position: from 20 to 13,000 c/s +/- 3 dB

“T” (Close talk) Position (8-16″): rolled off below 1000 c/s at 100 c/s; +/- 10 dB

Open Circuit Voltage Level: - 87 dB. OdB =1 Volt per Microbar

RTMA Microphone Rating Gm: (sensitivity): - 159 dB. RTMA Standard SE - 105

Hum Sensitivity (RTMA) Gh -153 dB

Output Impedance: Nominal at 1000 c/s: 150 Ohms

Rating Impedance: 150 Ohms

Weight: 38g

Cable: Supplied with 6m 4-core over all screened

Transformer, type 9398 - JS for matching BM5 to a high impedance input of a stereo amplifier available on special request. Mounting: Conical Friction Socket to 5/8″ x 27 thread

(Taken from BM Specifications’ Sheet)

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