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HomepageMicrophonesCondensor Microphones › Gefell KEM970
Gefell KEM970

The Cardioid Plane Microphone is a multi-capsule microphone system with unique directional characteristics that are largely independent of frequency.

On the horizontal axis the KEM 970 has the characteristic of a cardioid microphone, whilst on the vertical axis the characteristicsresemble a shotgun microphone with a very narrow acceptance angle of about 30°.

The directional pattern is therefore particularly well suited to the most frequently encountered situations where the source to be recorded is widely spread, or moving across the horizontal plane and sound arriving from other directions needs to be attenuated.

Attenuated sound may consist of unwanted noiseor reflections from surfaces such as ceilings, tablesor the floor. Mounting the microphone physically onits side can significantly reduce feedback problemsfrom sound reinforcement loudspeaker installationson the side walls.

For effective use of the highly directional nature ofthis microphone, a good understanding of thedirections from which wanted and unwanted soundsarrive is important. The more care taken in positioningthe KEM 970, the better the results obtained will be.Integrated front facing indicator lights help inpositioning the microphone accurately.

Acoustic treatment to improve a room can be anextremely costly exercise, and perhaps not even possible when trying to achieve the average 5 dB increase in operating level that the KEM 970 provides.An added benefit of the KEM 970, as shown in Fig.3,is its ability through skilled use of the sensitivity characteristics, to compensate for level changes if the sound source moves closer to the microphone.
Features
  • Multi-capsule condenser microphone system
  • Broad cardioid pattern to cover wide or moving sound sources
  • Locate up to three times the distance of omni microphones for same diffusse field
  • Optimum positioning using visual indicators
  • Suppression of undesirable reflections on the vertical axis
  • 6 dB improvement in feedback threshold for sound reinforcement applications
  • Frequency response 40 - 18000 Hz
  • Line level output, two position pre-attenuation switch
  • High pass filter switch
  • Analog or digital AES/EBU - DPP output

  • Recommended applications of the KEM 970:
  • On edges, or ends of stage
  • At a presenter´s desk
  • As a table microphone
  • Radio and TV productions
  • Video conferencing
  • Location of neighboring unwanted noise
  • Specifications
    Cardioid level microphone KEM 975, with non-rotationally symmetrical directional characteristics

    Directional
  • Horizontal: kidney-shaped
  • Vertical: lobar

  • Angle of coverage
  • Horizontal: 120 °
  • Vertical: 30 °

  • Acoustic operation: Pressure gradient
    Frequency response: 40 - 18000 Hz
    Sensitivity at 1 kHz, gain 0 dB: 775 mV / Pa
    Rated impedance: 40 Ω

    Equivalent noise
  • CCIR 468-4: 24 dB
  • DIN EN 60268-4: 15 dB-A

  • Noise distance (to 1 Pa at 1 kHz)
  • CCIR rated: 70 dB
  • A-rated: 79 dB

  • Boundary sound pressure level for 0.5% harmonic distortion
  • Gain 12 dB 104 db
  • Gain 0 dB 116 dB
  • Gain -12 dB 128 dB
  • Gain -24 dB 140 dB
  • Gain -36 dB 152 dB

  • End fittings: Neutrik XLR5M
    Mass: 1.07 kg
    Length: 343 mm
    Diameter protection cage: 40 mm
    Amplifier: 25 mm
    Surface: Nickel matt, dark bronze

    Power supply unit N 975
  • Mains voltage: 230/115 V AC, ± 10% 50/60 Hz

  • Connection fittings
  • KEM 975: XLR5F
  • Audio signal: XLR3M

  • Mass: 1.6 kg
    Width: 221 mm
    Depth: 169 mm
    Height: 45 mm
    Reviews
    Price
     
    $13859.00
    Used
    $8895.00
    Free shipping in Canada. Conditions
    Rental
     
    Price/Day
    Total
    1 Day
    $204.00
    $204.00
    3 Days
    $136.00
    $408.00
    5 Days
    $102.00
    $510.00
    12 Days
    $68.00
    $816.00
    28 Days
    $43.75
    $1225.00
    Additional information
    For more information about the KEM970, please visit the website of Gefell
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