The SF-24 stereo ribbon microphone is a phantom powered version of the popular SF-12 stereo ribbon microphone. It combines the SF-12’s high quality audio performance, outstanding stereo separation and imaging with Royer’s exclusive active electronics system for ribbon microphones. The SF-24’s output of -38 dB is a full 14 dB more sensitive than the non-powered SF-12, putting its sensitivity on par with that of phantom powered condenser microphones. The unique electronics and custom designed FET’s used in the SF-24 allow for ultra-quiet operation, with self-noise of lower than 18 dB.
Like an SF-12, the SF-24 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.
The SF-24's extension cable comes with a Y adapter that splits into separate 3-pin male XLR connectors labeled "Upper" and "Lower" for the upper and lower capsules of the microphone (when held vertically).
Features
Phantom powered circuitry provides high output and impedance matching
True stereophonic (Blumlein and M-S) recording from one 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
