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
TABLE OF CONTENTS Model SF-12 Stereo Ribbon Velocity Microphone Introduction page 2 Description page 2 Users Guide page 3 Amplification Considerations page 4 - Stereo Microphones and Ground Loops page 6 - Equalization and Ribbon Microphones page 7 - Hum, Noise and Mic Orientation... -
Page 3: Model
Please read this manual thoroughly in order to become familiar with all of the SF-12’s capabilities. It will assist you in making the most of its superior acoustic properties. This owner’s manual is a handy reference guide and we suggest you refer to it whenever questions arise on the use and care of your SF-12 ribbon microphone. -
Page 4: Users Guide
Therefore, listen to the feed before committing to it. 3. The Royer model SF-12 requires no power supply and is safe... -
Page 5: Amplification Considerations
Faulty or improperly wired cables could also cause problems with your SF-12. 4. Never attempt to test the SF-12 or any ribbon microphone with an ohmmeter. A blown ribbon could result. 5. Always provide adequate protection for your SF-12, or any ribbon microphone for that matter. - Page 6 preamp. Most dynamic (moving coil) microphones generate a healthy enough electrical current to work well with a variety of preamps, and their limited frequency response characteristics make mic loading less of a concern. Ribbon microphones generate a highly accurate signal, but the average ribbon mic generates approximately 20dB less gain than that of condenser microphones.
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Page 7: Stereo Microphones And Ground Loops
Some preamplifiers are prone to developing ground loops when used in conjunction with stereo or multi channeled microphones such as the SF-12. Ground loops can develop in the preamplifier with any stereo microphone, regardless of the type (i.e. condenser, dynamic, ribbon). A ground loop manifests itself as unwanted buzz or hum at 60 Hz and/or harmonics of 60 Hz. -
Page 8: Equalization And Ribbon Microphones
With vintage ribbon microphones that employ large, bulky magnet structures, the problem can be worse. Royer SF-1 and SF-12 microphones are designed to minimize the effects of unwanted radiation by integrating the transducer barrel as part of the magnetic return circuit. - Page 9 SF-12 stereo ribbon microphones go one step further by incorporating toroid impedance matching transformers, which have a natural ability to repel magnetic radiation. Dynamic and ribbon microphones are passive devices, meaning they incorporate no external or internal power supplies and have no head amplifier and therefore cannot produce hum on their own.
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Page 10: Microphone Technique
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... - Page 11 SF-12 is all that is needed for tom-toms and cymbals. For a single point stereo room mic, position the SF-12 vertically at four to eight feet in front of the kit. Compress to taste for either a very natural drum sound (light compression) or large rock drum sound (heavy compression).
- Page 12 If the room sounds good, try positioning the mic 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 13: Specialized Stereo Recording Techniques
Figure 1 satisfying. The SF-12 stereo microphone is two identical ribbon microphones in just this Blumlein orientation: if the microphone is placed in front of the performance, with the Royer logo facing the center of the ensemble to be recorded, the microphone will give a stereo recording as per the Blumlein technique. -
Page 14: Mid-Side (M-S) Recording
X-Y recording. Rotating the SF-12 counter-clockwise by 45º positions it for M-S recording. With the SF-12 in a vertical position, cable end down, the upper ribbon element faces the Figure 2 center of the performance and is the ‘mid’... -
Page 15: Care And Maintenance
J. Audio Eng. Soc., Vol. 30 pp.707 (1982 Oct.) 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. - Page 16 8. Leave disassembly of the microphone to a trained technician. There are no user-serviceable parts inside. 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.
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Page 17: Features
Due to the transducer’s powerful magnets, keep recorded tapes, spring-wound watches and personal credit cards with magnetic coding away from the microphone to prevent possible damage. Features and Specifications SF-12 Features: Wide, Smooth Frequency Range • Closely Matched Characteristics •... - Page 18 Output Connector: male XLR 5 pin (stereo) Dimensions: 206mm L x 25mm W (8” L x 1” Weight: 369 grams (13 oz.) Finish: Matte Black Chrome, Dull Satin Nickel (optional) Accessories: Protective wood case, one (1) 18’ shielded 5 conductor cable with 5-pin connectors, adaptor cable terminating in two (2) XLR type 3-pin male connectors, mic clip,...
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Page 19: Wiring Diagram
Wiring Diagram Polar Pattern Upper Element Lower Element Frequency Response 1000... -
Page 20: Notes
Notes:... -
Page 21: Warranty
This lifetime warranty is offered to the original owner and is not transferable. Royer Labs will repair or replace an SF-12 that fails to meet factory specifications during the warranty period (ribbon elements excluded). No other warranties are implied. To validate this warranty, product registration and proof of purchase must be on file with Royer Labs.
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