Sennheiser MKH 20 Service Manual page 46

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Controls
Technical Data
The values in parentheses apply to activated pre-attenuation (-10dB)
Acoustic principle _____________________ Pressure gradient/
______________________________ interference receiver
Directional characteristic _______________ hyper-cardioid/lobe
Transmission range ___________________ 50 to 20000Hz
Free-field no-load transmission factor at 1kHz50mV/Pa (15mV/Pa)
______________________________ = -28dBV (-38dBV)
Equivalent sound pressure level
according to DIN 45500, curve A
Equivalent sound pressure level
according to DIN 45405/CCIR 468____ 20dB (26dB)
Overload sound pressure level at 1kHz_____ 123dB (133dB)
Output _____________________________ balanced, transformer-free
Electrical impedance at 1kHz ____________ 150Ω
Min. terminating impedance ____________ 1000Ω
Pre-attenuation ______________________ 10dB, switchable
Low-cut filter (cut-off) _________________ 18dB/oct below 50Hz
Roll-off filter ________________________ additional 3dB reduction at 70Hz
Presence filter _______________________ 5dB emphasis at 10kHz
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 410
Weight _____________________________ approx. 180g
Scope of delivery _____________________ 1 microphone MKH 70-1 P 48
roll-off filter
switch for 10dB sensitivity reduction
8dB (15dB)
2: +, AF+
3: +, AF-
presence filter
MKH 70-1 P 48
04/2005