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Polar pattern cardioid
Acoustical operating principle Pressure gradient transducer
Frequency range 40 ... 18000 Hz
Sensitivity at 1 kHz 28 mV / Pa
Rated impedance 200 Ω
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 Ø ) 185 x 43 mm

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Microtech - M990

Microtech Gefell

The M 990 is renowned for its high sensitivity and excellent signal-to-noise ratio. It combines modern large diaphragm capsule technology with the typical full-bodied sound of tube microphones that are preferred by vocalists and soloists. The M 990 vacuum tube condenser microphone is well-suited for difficult radio play productions as well as a supporting microphone for orchestra recordings.

The new pressure gradient transducer of the M 990 uses a large diameter gold-plated plastic diaphragm. The vacuum tube preamplifier is equipped with a pentode working as a triode selected for its sonic characteristics. The N 920.1 power supply provides the operating voltage for the vacuum tube condenser microphone. It can be powered from AC mains with a primary voltage of 115 or 230 volts / 50 or 60 Hz.

For cable lengths over 50 meters it is recommended to have your service provider set the heater voltage of the power supply to 5.8 volts. The N 920.1 is equipped with an on/off-switch, a 7-pin Tuchel connector that powers the microphone and a 3-pin XLR connector with integrated line voltage selector.

The M 990 is packed in a wooden case and comes with power supply , connection cable C 92.1 and elastic suspension EA 92. The microphone is available in a dark bronze finish.

Features And Specs

Polar pattern cardioid
Acoustical operating principle Pressure gradient transducer
Frequency range 40 ... 18000 Hz
Sensitivity at 1 kHz 28 mV / Pa
Rated impedance 200 Ω
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 Ø ) 185 x 43 mm

Commander

Microtech - M990

Microtech - M990

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