Sennheiser MKH 20 Service Manual page 30

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Controls
Technical Data
The values in parentheses apply to activated pre-attenuation (-10dB)
Acoustic principle _____________________ Pressure gradient receiver
Directional characteristic _______________ hyper-cardioid
Transmission range ___________________ 40 to 20000Hz
Free-field no-load transmission factor
at 1kHz ____________________________ 25mV/Pa (8mV/Pa)
Equivalent sound pressure level
according to DIN 45500, curve A_____ 12dB (18dB)
Equivalent sound pressure level
according to DIN 45405/CCIR 468____ 21dB (27dB)
Max. sound pressure level at 1kHz ________ 134dB (142dB)
Output _____________________________ balanced, transformer-free
Electrical impedance at 1kHz ____________ 150Ω
Min. terminating impedance ____________ 1000Ω
Pre-attenuation ______________________ 10dB, switchable
Low-cut filter (cut-off) _________________ 12dB/oct below 30Hz
Roll-off filter ________________________ additional 4dB reduction at 50Hz
Plug-in connection ____________________ XLR3
Connector layout _____________________ 1: -, housing
Power supply ________________________ Phantom supply 48V
Supply voltage _______________________ 48V ±4V
Supply current _______________________ 2mA
Dimensions (in mm)___________________ 25 ∅ x 150
Weight _____________________________ approx. 100g
Scope of delivery _____________________ 1 microphone MKH 50 P 48,
roll-off filter
pre-attenuation (10dB)
= -32dBV (-42dBV)
2: +, AF+
3: +, AF-
1 floorstand clamp MZQ 40,
1 close-talking and
wind protection MZW 41
MKH 50 P 48
04/2005