Microtech Gefell M990

Microtech Gefell M990

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.

DELIVERY

  • The microphone M990 in Suitcase    L x B x H   450 x 350 x 160 mm
  • Power supply UN 920.1
  • Connection cable C 92.1
  • Elastic suspension EA 92

TECHNICAL SPECIFICATIONS

  • Polar patterns:  Cardioid
  • Acoustical operating principle:  Pressure gradient transducer
  • Frequency range:  40 Hz - 18 kHz
  • Sensitivity at 1 kHz:  28 mV / Pa
  • Rated impedance:  200 ohm
  • Equivalent loudness level (due to inherent noise):  CCIR 468-4 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 mm x 43 mm

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