{"product_id":"royer-labs-sf-12","title":"Royer Labs SF-12","description":"\u003cdiv lang=\"en\"\u003e\n  \u003cp\u003e\u003cstrong\u003eRoyer Labs SF-12\u003c\/strong\u003e is a passive stereo coincident ribbon microphone, hand-built in Burbank, California. A single enclosure – dimensionally identical to the mono R-121 – houses two matched ribbon transducers arranged in the classic Blumlein configuration: each rotated 45 degrees from the vertical axis, stacked one above the other. The SF-12 is based on Bob Speiden's original design, developed by Royer Labs with improved toroidal transformers and a lower-mass ribbon.\u003c\/p\u003e\n\n  \u003ch3\u003eBlumlein on One Stand – Geometry Two Separate Mics Cannot Replicate\u003c\/h3\u003e\n  \u003cp\u003eThe Blumlein technique requires zero acoustic distance between two figure-8 elements crossed at 90 degrees. Two separate microphones can never fully satisfy this requirement due to the physical offset between their housings. The SF-12 solves this structurally: both ribbons share the same vertical axis, eliminating inter-channel phase delay and delivering stereo imaging with exceptional depth and mono coherence. Summing both channels to mono produces no phase artifacts – the SF-12 can be collapsed to mono in a mixer without consequence. The lower element is the left channel, the upper the right, referenced from the rear of the microphone.\u003c\/p\u003e\n\n  \u003ch3\u003ePassive Ribbon in Studio and Live Applications\u003c\/h3\u003e\n  \u003cp\u003eThe absence of internal active electronics means there is no circuit inside the microphone capable of overloading regardless of SPL – the 130 dB ceiling is a mechanical ribbon limit, not an electronic one. The 1.8-micron aluminium ribbons at approximately 1\/3 milligram each respond to transients with an accuracy unavailable from higher-mass condenser diaphragms. High-efficiency toroidal transformers with a gold-plated 5-pin XLR output connector – with a Y-cable splitting to two standard XLRs included in the box – deliver low self-noise and a stable 300 Ω output impedance. The ingot iron case forms part of the magnetic return circuit, minimising flux leakage and contributing to the relatively high sensitivity in a compact package.\u003c\/p\u003e\n\n  \u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eTwo matched ribbon transducers in 90° Blumlein configuration – coincident stereo from one stand position\u003c\/li\u003e\n    \u003cli\u003eFull mono compatibility – channel summing without phase artifacts\u003c\/li\u003e\n    \u003cli\u003eM-S recording possible by re-routing channels\u003c\/li\u003e\n    \u003cli\u003eNo internal active electronics – no electronic overload up to maximum SPL rating\u003c\/li\u003e\n    \u003cli\u003e1.8-micron aluminium ribbons, approx. 1\/3 mg each – exceptional transient response\u003c\/li\u003e\n    \u003cli\u003eHigh-efficiency toroidal transformers with gold-plated 5-pin XLR output connector\u003c\/li\u003e\n    \u003cli\u003eIngot iron case – forms part of the magnetic circuit, very low flux leakage\u003c\/li\u003e\n    \u003cli\u003e5-pin XLR to dual 3-pin XLR Y-cable (Upper \/ Lower) included\u003c\/li\u003e\n    \u003cli\u003eRibbon element unaffected by temperature and humidity changes\u003c\/li\u003e\n    \u003cli\u003eHand-built in Burbank, CA\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 (both elements)\u003c\/li\u003e\n    \u003cli\u003eGenerating element: 1.8-micron aluminium ribbon\u003c\/li\u003e\n    \u003cli\u003eFrequency response: 30–15,000 Hz ±3 dB\u003c\/li\u003e\n    \u003cli\u003eSensitivity: \u0026gt;-52 dBV re. 1 V\/Pa\u003c\/li\u003e\n    \u003cli\u003eOutput impedance: 300 Ω @ 1 kHz (nominal)\u003c\/li\u003e\n    \u003cli\u003eRated load impedance: \u0026gt;1500 Ω\u003c\/li\u003e\n    \u003cli\u003eMaximum SPL: \u0026gt;130 dB\u003c\/li\u003e\n    \u003cli\u003eOutput connector: 5-pin male XLR (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 (standard) \/ dull satin nickel (optional)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Royer Labs","offers":[{"title":"Default Title","offer_id":53989018173777,"sku":"28593","price":2737.39,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8741\/0769\/files\/RoyerLabsSF-12RibbonMicrophone.jpg?v=1781093768","url":"https:\/\/wrdtunes.com\/products\/royer-labs-sf-12","provider":"Wired Tunes","version":"1.0","type":"link"}