The Royer SF-24V stands as the pinnacle of the SF-series stereo microphones, incorporating vacuum tube electronics for a lush, smooth, and natural sound reproduction. With outstanding stereo imaging, superb transient response, and an unprecedented level of airiness, the SF-24V caters to audio enthusiasts seeking the utmost in stereo ribbon microphone technology. Drawing inspiration from the TEC Award-winning R-122V ribbon microphones, the SF-24V combines top-notch tube electronics with a coincident pair of ribbon microphones for a superior recording experience.
The Royer SF-24V delivers unparalleled stereo ribbon microphone performance, making it a top choice for discerning audio professionals and recording enthusiasts. With its vacuum tube electronics, precise engineering, and versatile recording capabilities, the SF-24V sets a new standard for stereo ribbon miking.
Vacuum Tube Electronics:
The SF-24V integrates twin head amplifiers featuring low-noise, triode-connected military-grade 5840 vacuum tubes. This design provides increased midrange reach, unmatched clarity, and exceptional detail.
Coincident Pair in Blumlein Configuration:
Similar to the SF-12, the SF-24V consists of two matched ribbon microphones arranged in a Blumlein configuration. Each ribbon is positioned 45 degrees from center, offering outstanding stereo imaging.
The SF-24V incorporates two 1.8-micron ribbons, each weighing approximately 1/3 milligram. These ribbons contribute to superb transient response and a wide, uniform frequency response.
Magnet/Pole Piece Structures:
The ribbon transducers utilize magnet/pole piece structures, ensuring a consistent frequency response without substantial peaks or dips.
Dedicated Power Supply:
The SF-24V includes a dedicated power supply that provides ample current to the vacuum tube electronics, enhancing the microphone's performance.
Fully Balanced Outputs:
The microphone's fully balanced outputs, electrically isolated with special-purpose Jensen output transformers, virtually eliminate induced noise.
Large Toroidal Transformers:
Specially wound toroidal transformers provide increased sensitivity, allowing the SF-24V to deliver a -38 dB output suitable for use with any professional preamplifier.
With self-noise lower than 18 dB, the SF-24V ensures ultra-quiet operation, making it suitable for demanding classical and acoustic recording applications.
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
Full Orchestra, Choir, and Ensembles:
The SF-24V excels in capturing the nuances of large musical ensembles, offering exceptional stereo imaging and detail.
Ideal for recording classical piano with richness and natural sound reproduction.
Well-suited for drum overhead applications, providing realistic stereo imaging and powerful drum tracks.
Versatile for recording a wide variety of acoustic instruments with clarity and fidelity.
Suitable for capturing small vocal groups or choirs with a natural and immersive sound.
Functions effectively as a room microphone, capturing the ambiance of the recording environment.
Recording in Mono
The SF-24V exhibits excellent phase compatibility between its two sides, allowing seamless combination of the two channels for mono recording without phase artifacts.
Independent Mono Use:
Each side of the SF-24V can be used independently as a mono microphone, providing flexibility in recording applications.
Acoustic Operating Principle:
Electrodynamic pressure gradient with vacuum tube electronics.
JAN mil-spec 5840W pentode wired in triode configuration
1.8-micron aluminum ribbon
30-15,000 Hz +/- 3dB
-38 dB (re. 1v/pa +/-1dB)
< 18 dB
450 Ohms @ 1K
Recommended Load Impedance:
1500 Ohms or greater
Microphone Output Connector:
Male XLR 7 pin (stereo*)
Power Supply Output Connectors:
Two Male XLR-3 pin
Plate supply: 135 VDC @2ma
Filament supply: 6 VDC@ 150ma from dedicated power supply
4 mA per channel
270mm X 39mm (base) X 25mm (top) (10 5/8"X 1.5" X 1")
583 grams (20.5 oz)
Dull Satin Nickel
Optical Black finish optional
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