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Royer Labs

SF24V

Royer Labs SF-24V Vacuum Tube Stereo Ribbon Microphone

The Royer SF-24V is a vacuum tube stereo ribbon microphone, featuring 2 ribbon’s in a crossed figure-8 configuration. The SF-24V is the pinnacle of Royer’s world class microphone product line. The SF-24V captures a smooth detailed and natural sound, with an extraordinarily accurate stereo image. Being a ribbon mic, the SF-24V has that lovely rich and dark character. The tube section in the SF-24V offers extended clarity in the mid-frequencies too.


    • Royer Labs SF-24V Features:

      Vacuum tube circuitry provides high output and impedance matching
      True stereophonic (Blumlein and M-S) recording from one coincident microphone
      High SPL capabilities
      No distortion up to maximum SPL rating
      Extremely low residual noise
      Ribbon elements are not affected by heat or humidity
      Absence of high frequency phase distortion
      Equal sensitivity from front or back of elements
      Consistent frequency response regardless of distance
      High efficiency, matching toroidal transformers
      Very low magnetic leakage
    • Royer Labs SF-24V Specifications:

      Acoustic Operating Principle: Electrodynamic pressure gradient with vacuum tube electronics.
      Vacuum Tube: JAN mil-spec 5840W pentode wired in triode configuration
      Polar Pattern: Crossed figure-8's
      Generating Element: 1.8-micron aluminum ribbon
      Frequency Response: 30-15,000 Hz +/- 3dB
      Sensitivity: -38 dB (re. 1v/pa +/-1dB)
      Self-Noise: < 18 dB
      Output Impedance: 450 Ohms @ 1K
      Recommended Load Impedance: 1500 Ohms or greater
      Maximum SPL: >130dB
      Microphone Output Connector: Male XLR 7 pin (stereo*)
      Power Supply Output Connectors: Two Male XLR-3 pin
      Power Requirements: Plate supply: 135 VDC @2ma, Filament supply: 6 VDC@ 150ma from dedicated power supply.
      Supply Current: 4 mA per channel
      Microphone Dimensions: 270mm X 39mm (base) X 25mm (top) (10 5/8"X 1.5" X 1")
      Weight: 583 grams (20.5 oz)
      Finish: Dull Satin Nickel, Optical Black finish optional
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