Royer Labs SF-12 Stereo Coincident Ribbon Microphone
The Royer Labs SF-12 Stereo Coincident Ribbon Microphone combines high quality audio performance with outstanding stereo separation and imaging.
- True stereophonic (Blumlein and M-S) recording from one microphone and equal sensitivity from front or back of elements
- High SPL capabilities and absence of high frequency phase distortion
- No internal active electronics to overload or produce distortion up to maximum SPL rating
- Extremely low residual noise and very low magnetic leakage
- Ribbon element not affected by heat or humidity
- Consistent frequency response regardless of distance
- High efficiency, matching toroidal transformers
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The SF-12 is a modern ribbon design with no audible diffraction effects or cavity resonance. An SF-12 is actually two matched ribbon microphones placed one above the other, each aimed 45 degrees from centre in the classic Blumlein configuration. The frequency response is excellent regardless of the angle of sound striking the ribbons and off-axis coloration is negligible.
The SF-12 utilises two 1.8-micron ribbons, each weighing approximately 1/3 milligram and producing superb transient response. The two ribbon transducers are magnet/pole piece structures that produce a wide, uniform frequency response with no substantial peaks or dips. The case is ingot iron and forms part of the magnetic return circuit, an effective system with low leakage flux which accounts for the relatively high sensitivity in a trim package. The SF-12's extension cable comes with a Y-adapter that splits into separate 3-pin male XLR connectors labelled 'Upper' and 'Lower', for the upper and lower capsules of the microphone (when held vertically).
Recording With The SF-12
The SF-12 is uncanny for creating 'you-are-there' stereo recordings that capture not only the instrument being recorded, but, depending on positioning, the acoustic environment as well. If you pay careful attention to the sound of an instrument or ensemble in the recording environment, you will likely find a place where it sounds best to you. Position the SF-12 in that place and you will capture that sound.
The SF-12 is an excellent choice for drum overheads, where its stereo imaging and realism help to create powerful, dynamic drum tracks. In a jazz setting, recording the kit flat provides extremely natural sounding cymbals, tom-toms and snares. In rock and pop recordings where you'd like to capture the meat of the kit but with more air on the cymbals to help them cut more aggressively, simply open the top end up with EQ. Ribbons take EQ extremely well because they generate virtually no self distortion. When you boost a frequency, even by many dB, you'll bring up only the musical response you're looking for without unpleasant distortion artifacts joining the party.
Recording In Mono
Phase compatibility between the two sides of the SF-12 is excellent, allowing you to combine the two channels for mono recording without creating phase artifacts. This is particularly useful when capturing a wide sound field in mono, for instance, a singer who tends to move off the 'sweet spot' of a mono microphone. Either side of the SF-24 can also be used individually as a mono microphone.
Recommended Applications: Drum Overheads, Percussion Instruments, Brass and Woodwinds, Horn Sections, Acoustic Piano, Harp, Choirs, Solo Strings, String Sections, Orchestra, Acoustic and Electric Guitars, Background Vocals, Ambiance, Stereo to Mono
Acoustic Operating Principle: Electrodynamic pressure gradient
Polar Pattern: Symmetrical figure-8
Generating Element: 1.8-micron aluminium ribbon
Frequency Response: 30-15,000 Hz +/- 3dB
Sensitivity: > -52 dBv Re. 1v/pa
Output Impedance: 300 Ohms @ 1K (nominal)
Rated Load Impedance: >1500 Ohms @ 300 nominal impedance
Maximum SPL: >130dB
Output Connector: Male XLR 5 pin (stereo*)
Dimensions (LxW): 206 x 25mm (8 x 1 inches)
Weight: 369 Grams (13 Oz)