Royer SF-24V
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The SF-24V vacuum tube stereo ribbon microphone is the pinnacle of our SF-series stereo microphones. The sound pickup is lush, smooth and natural, with outstanding stereo imaging and superb transient response. The tube electronics provide increased midrange reach, unmatched clarity and detail, and an airiness previously unheard of in ribbon mics. Utilizing the same proprietary tube electronics as in our TEC Award winning R-122V ribbon microphones, the SF-24V delivers the ultimate in stereo ribbon miking for the true connoisseur of recorded sound.
The SF-24V’s independent tube circuits provide an output level of -38 dB, suitable for use with any professional preamplifier. With self-noise of lower than 18 dB, the SF-24V’s ultra-quiet operation is suitable for the most demanding classical and acoustic recording applications.
Like an SF-12, the SF-24V is actually two matched ribbon microphones, placed one above the other in a coincident pair, each aimed 45 degrees from center in the classic Blumlein configuration. The magnet/pole piece structure of each ribbon transducer delivers a wide, uniform frequency response with no substantial peaks or dips, and the 1.8-micron ribbons produce superb transient response. Frequency response is excellent regardless of the angle of sound striking the ribbons and off-axis coloration is negligible.
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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