{"product_id":"royer-labs-sf12","title":"Royer Labs SF12","description":"\u003cdiv lang=\"en\"\u003e\n  \u003cp\u003e\u003cstrong\u003eRoyer Labs SF-12\u003c\/strong\u003e is a passive stereo coincident ribbon microphone — two matched 1.8-micron aluminum ribbon elements mounted one above the other in a true Blumlein configuration (crossed figure-eights, 45 degrees off center) within a single ingot iron body. The SF-12 is fully passive: the absence of any active electronics eliminates any internal overload point, maintaining full frequency response all the way to the maximum SPL rating of above 130 dB. Each of the two transducers uses a proprietary crossfield motor assembly: four Neodymium magnets with Permendur iron pole pieces minimize the front-to-rear acoustic path length, extending the high-frequency ceiling without artificial boost. The ingot iron body forms part of the magnetic return circuit, actively containing stray flux — the source of the microphone's relatively high sensitivity for such a compact package. The SF-12 design originates with Bob Speiden; Royer produces it with upgraded toroidal transformers, a lower-mass ribbon, and improved transducer mechanics.\u003c\/p\u003e\n\n  \u003ch3\u003eCrossfield motor and ingot iron body — the physics behind the SF-12's sound\u003c\/h3\u003e\n  \u003cp\u003eA stereo ribbon setup built from two separate microphones — on a stereo bar or in separate housings — always introduces a small but measurable spacing between capsules. The SF-12 is genuinely coincident: both elements occupy the same acoustic point, eliminating inter-channel time-of-arrival differences and producing stereo imaging that collapses to mono without artifacts. The crossfield motor in each transducer — four Neodymium magnets with Permendur pole pieces — shortens the front-to-rear acoustic path to the minimum achievable, directly extending the high-frequency response while maintaining the flat characteristic of a well-designed ribbon. The 1.8-micron ribbons, each weighing approximately one-third of a milligram, deliver transient response comparable to a condenser microphone. Negligible off-axis coloration means the SF-12 maintains consistent character regardless of the angle of incoming sound — critical when miking wide sections or ensembles where sources span a broad horizontal arc.\u003c\/p\u003e\n\n  \u003ch3\u003eRecording configurations and mono operation\u003c\/h3\u003e\n  \u003cp\u003eThe SF-12 supports two configurations from a single mic position: classic Blumlein and M\/S — the latter requiring only matrix processing in the console or DAW, enabling post-session stereo width adjustment without moving the microphone. The lower element corresponds to the left channel and the upper to the right, referenced from behind the microphone. Phase compatibility between the two channels is complete — summing to mono creates no artifacts. Either element can be used independently as a standalone mono figure-eight microphone. As a passive design, the SF-12 requires a high-gain, high-input-impedance preamplifier; its sensitivity of above -52 dBv is at passive ribbon levels, which distinguishes it clearly from the active SF-24. The extension cable terminates in a Y-splitter to two 3-pin XLR connectors labeled Upper and Lower. Applications: drum overheads (jazz, rock, classical), orchestra and choir, piano, acoustic guitar, ensembles, voice-over, ambient capture. Lifetime warranty; first ribbon replacement free.\u003c\/p\u003e\n\n  \u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003ePassive stereo coincident ribbon microphone in Blumlein configuration\u003c\/li\u003e\n    \u003cli\u003eTwo matched 1.8-micron aluminum ribbon elements (99.99% Al), each ~1\/3 mg — fast transient response\u003c\/li\u003e\n    \u003cli\u003eCrossfield motor per transducer: 4x Neodymium magnets + Permendur pole pieces — short acoustic path, HF extension\u003c\/li\u003e\n    \u003cli\u003eIngot iron body as part of magnetic return circuit — low stray flux, high relative sensitivity\u003c\/li\u003e\n    \u003cli\u003eNo active electronics — no internal overload point up to maximum SPL\u003c\/li\u003e\n    \u003cli\u003eTrue coincidence: both elements at the same acoustic point — perfect mono compatibility\u003c\/li\u003e\n    \u003cli\u003eSupports Blumlein and M\/S configurations from a single mic position\u003c\/li\u003e\n    \u003cli\u003eEach channel usable independently as a mono figure-eight microphone\u003c\/li\u003e\n    \u003cli\u003eNegligible off-axis coloration; consistent response regardless of incidence angle\u003c\/li\u003e\n    \u003cli\u003eNo audible diffraction effects or cavity resonance\u003c\/li\u003e\n    \u003cli\u003eHigh-efficiency matching toroidal transformers; very low magnetic leakage\u003c\/li\u003e\n    \u003cli\u003eRibbon elements unaffected by heat or humidity\u003c\/li\u003e\n    \u003cli\u003eExtension cable with Y-splitter (XLR5 → 2x XLR3), labeled Upper and Lower\u003c\/li\u003e\n    \u003cli\u003eLifetime warranty; first ribbon replacement free\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eAcoustic operating principle: electrodynamic pressure gradient (passive)\u003c\/li\u003e\n    \u003cli\u003ePolar pattern: symmetrical figure-8 (Blumlein)\u003c\/li\u003e\n    \u003cli\u003eGenerating element: 1.8-micron aluminum ribbon (99.99% Al)\u003c\/li\u003e\n    \u003cli\u003eMotor assembly: crossfield — 4x Neodymium magnets + Permendur iron pole pieces per transducer\u003c\/li\u003e\n    \u003cli\u003eFrequency response: 30–15,000 Hz +\/- 3 dB\u003c\/li\u003e\n    \u003cli\u003eSensitivity: above -52 dBv re. 1V\/Pa\u003c\/li\u003e\n    \u003cli\u003eOutput impedance: 300 ohms @ 1 kHz (nominal)\u003c\/li\u003e\n    \u003cli\u003eRated load impedance: above 1,500 ohms\u003c\/li\u003e\n    \u003cli\u003eMaximum SPL: above 130 dB\u003c\/li\u003e\n    \u003cli\u003eOutput connector: XLR 5-pin (stereo)\u003c\/li\u003e\n    \u003cli\u003eDimensions: 206 mm (L) x 25 mm (W)\u003c\/li\u003e\n    \u003cli\u003eWeight: 369 g (13 oz)\u003c\/li\u003e\n    \u003cli\u003eFinish: Matte Black Chrome; optional Dull Satin Nickel\u003c\/li\u003e\n    \u003cli\u003eIncludes: SF-12 microphone, extension cable with Y-splitter (XLR5 → 2x XLR3), wooden case\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Royer Labs","offers":[{"title":"Default Title","offer_id":53669833441617,"sku":"48277","price":2677.01,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8741\/0769\/files\/RoyerLabsSF121.jpg?v=1778493581","url":"https:\/\/wrdtunes.com\/fr\/products\/royer-labs-sf12","provider":"Wired Tunes","version":"1.0","type":"link"}