BANG & OLUFSEN B&O BEOMIC BM4 VINTAGE RIBBON MICROPHONE W/ORIGINAL BOX

Bang & Olufsen

$ 499.00 

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fair to good cosmetic condition, perfect working condition
impedance and roll-off switches have been removed

wired for use with standard XLR cable which does not lock to mic

with original box

No cable,  clip, case or manual included
Bang & Olufsen Beomic 4 is a pressure-gradient full-bass microphone with a perfect figure-eight directional pattern.
Features: No resonance peaks. Extremely smooth response. Bi-Directional - no side pickup. No frequency discrimination, front to back. High efficiency Nu-Metal transformer placed in microphone housing. Switch for muting and voice/music conditions. The miniature non-corrosive duraluminium ribbon was only 0.0001" thick and its weight only 1.3 mg. This negligible mass prevented any resonance within the audio range. Shock and blast proof. Ball swivel for tilting to any position.
Specifications: Dimensions 195mm high, 30mm diameter
Impedance, switchable 50 ohms, 250 ohms and 40 Kohms balanced
Response M position: 20-11000 c/s +/- 2,5 dB
T position: 10 dB lower at 100 c/s
Sensitivity M position, 50 ohms: 88 dB below 1V/µbar
M position, 250 ohms: 81 dB below 1V/µbar
M position, 40 Kohms: 60 dB below 1V/µbar
T position, 4 dB lower
RTMA Microphone Rating GM (sensitivity): -158dB; Hum Sensitivity (RTMA) GH: -145 dB. RTMA Standard SE - 105. BM 3. Open Circuit Voltage Level: -88 dB, OdB = 1 Volt per Microbar
Output Impedance: Nominal 80 ohms
Rating Impedance: 150 ohms
BM 4. Open Circuit Voltage Level:
OdB = 1 Volt per Microbar
Size: 7,75" x 1 3/16"
Weight: 15 ozs approx.

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