royer SF-12 Operation Instructions Manual & User Manual
Stereo ribbon velocity microphone
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Summary of Contents for royer SF-12
- Page 1 Royer Labs Model SF-12 Stereo Ribbon Velocity Microphone Operation Instructions Manual & User Guide Made in U.S.A.
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Page 2: Table Of Contents
Amplification Considerations Stereo Microphones and Ground Loops Equalization and Ribbon Microphones Hum, Noise and Mic Orientation Microphone Techniques General Tips for Using the Royer SF-12 Specialized Stereo Recording Techniques Classic Blumlein Technique Mid-Side (M-S) Technique Care and Maintenance Care for the Optical Black Finish Features Specifications... -
Page 3: Introduction
Your SF-12 is equipped with a 5-pin XLR extension cable and a splitter cable that fans out to twin 3-pin male XLR connectors. As shipped from the factory, the connectors are marked “upper”... -
Page 4: User Guide
Therefore, listen to the feed before committing to it. 3. The Royer model SF-12 requires no power supply and is safe to use on consoles with phantom microphone powering, provided that the cabling is wired properly. It should be noted that not all ribbon microphones are compatible with phantom-powering systems, so check the manufacturer’s recommendations before using other ribbon microphones. - Page 5 performance can we expect from the preamplifiers built into our mixing desks? While most preamplifiers will handle ribbon microphones well in most recording situations, some preamps that work perfectly well with condenser or dynamic mics may prove to be poor performers with ribbons.
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Page 6: Stereo Microphones And Ground Loops
The two three-pin male XLR connectors on the SF-12’s splitter cable share Pin-1 as ground, so they are grounded to each other through the cable set. If the grounding scheme within the preamplifier is poorly designed, or the distances to internal ground are too great, a ground loop develops. -
Page 7: Hum, Noise And Mic Orientation
With this design, the barrel that houses the transducer serves to complete the North-South magnetic return and neutralizes the effects of outside magnetic radiation. The SF-1 mono and SF-12 stereo ribbon microphones go one step further by incorporating toroid impedance matching transformers, which have a natural ability to repel magnetic radiation. -
Page 8: Microphone Techniques
It is important to remember that the SF-12’s ribbon elements can be damaged by wind. When the SF-12 is mounted on a boom stand, be sure the stand is moved slowly. When the microphone is taken down, put it in its box immediately or, if it is to remain in its shock mount, place the mic sock over the ribbon end of the microphone. - Page 9 10 to 20 feet from the piano for more room ambience. If you position the SF-12 under the open lid of the piano, there will be some amount of reflected sound from the lid. Careful positioning can minimize or accentuate lid reflections, depending on what sound you’re striving for.
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Page 10: Specialized Stereo Recording Techniques
For recording a vocal with acoustic guitar, two separate mono tracks are required with little leakage between the tracks. One stand and one SF-12 can do the job nicely when the two axes of sensitivity are correctly oriented (see illustration). -
Page 11: Mid-Side (M-S) Technique
M-S recording, one mic faces sideways, one faces forward as shown in Figure 2, and they are connected as shown in Figure 3. With the SF-12's logo facing the center of the performance, the mic is positioned for X-Y recording. Rotating the SF-12 counter-clockwise by 45¼... -
Page 12: Care And Maintenance
Figure 3 Care and Maintenance The SF-12 is a solidly built, precision instrument. All that is required to ensure proper operation of this microphone is to follow some commonsense rules. 1. To avoid transducer damage, do not expose the microphone to severe shock or vibration. If the microphone is accidentally dropped, test it to see if damage has occurred before returning it to service. -
Page 13: Care For The Optical Black Finish
Caution: Do not check the SF-12 with an ohmmeter or continuity tester, and do not connect the unit to an input device designed to power a capacitor microphone. Strong winds and mechanical shocks should be avoided. Care for the Optical Black Finish The SF-12's optical black finish is a sophisticated surface treatment designed to refract light... -
Page 14: Specifications
Specifications Acoustic Operating Principle: Electrodynamic pressure gradient Polar Pattern: Symmetrical Figure-8 Generating Element: Two 1.8 micron aluminum ribbons Frequency Response: 30Hz - 15000Hz ±3dB Sensitivity: > -52dBv Re.1v/pa Output Impedance: 300 Ohms @ 1 kHz Recommended Load Impedance: > 1500 Ohms Maximum SPL: >... -
Page 15: Wiring Diagram
Wiring Diagram Polar Pattern Frequency Response... -
Page 16: Warranty
1 year Parts and Labor SCOPE OF WARRANTY: From the date of original purchase and for the respective periods specified above, Royer Labs agrees to repair, at its sole expense, all Royer Labs products which are defective in material and workmanship.
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