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  Microtech Gefell M990 M 990 Cardioid Tube Condenser
M990 Cardioid Tube Condenser


 
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  Microtech Gefell M990 Cardioid Tube Condenser
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Product Code: GEF990
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Microtech Gefell M990 M 990 Cardioid Tube Condenser

The M 990 exhibits high sensitivity and with that an excellent
signal-to-noise ratio. It combines modern large diaphragm
capsule technology with the typical warm fully sound of tube
microphones which is especially preferred by vocalists and
soloists.                                                                                                
The M 990 vacuum tube-condenser microphone is suited for
  1. difficult radio play recordings as well as supporting microphone for 
orchestra recordings.
The time proven pressure gradient transducer of the M 990 uses a
large diameter gold sputtered plastic membrane.
The vacuum tube preamplifier is equipped with a pentode working
as triode selected for its sonic characteristics.
The N 920.1 power supply provides the operating voltages for the
vacuum tube-condenser microphone. It can be powered from a.c.
mains with the primary voltage of 115 or 230 volts / 50 Hz or 60
Hz.
It is recommended to set the heater voltage of the power supply
to 5,8 volts by your service work-shop for cable lengths longer
than 50 meters.
The N 920.1 is equipped with the on/off-switch, the 7-pin Tuchel
connector which powers the microphone and a 3-pin XLR
connector with integrated voltage selector switch.
The complete system includes the M 990 microphone packed in
a wooden case, N 920.1 power supply, C 92.1 microphone cable
and an elastic suspension.
The microphone is available in dark bronze.

Microphone M 990 in Suitcase   L x B x H   450 x 350 x 160 mm
Power supply N 920.1
Connection cable C 92.1
Elastic suspension EA 92
dark bronze
Order-No. 211179


Windscreen, anthracite
W 92
Order-No. 202402
Popscreen, black
PO 70
Order-No. 600018
Microphone holder, dark bronze
MH 80
Order-No. 202322
Connection cable with swivel mount
C 92.1 S
Order-No. 202206


Tube-Condenser Microphone
M 990
Polar pattern
cardioid
Acoustical operating principle
Pressure gradient transducer
Frequency range
40 ... 18000 Hz
Sensitivity at 1 kHz
28 mV / Pa
Rated impedance
200
Equivalent loudness level
due to inherent noise
CCIR 468-4 (qps)
24 dB
DIN EN 60651
13 dB - A
Signal-to-noise ratio
(re 1 Pa at 1 kHz)
CCIR-weighted
70 dB
A-weighted
81 dB
Max. SPL for THD 0,5 %
119 dB
Total dynamic range of the microphone amplifier
106 dB
DC power supply
120 V -
Anode current
1 mA -
Heater voltage
5,8 V -
Heater current
200 mA -
Tube
EF 86
Output connector
7- pin Tuchel C 70 / A
Weight
400 g
Dimensions (L x )
185 x 43 mm

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