Royer Manual
Table Of Contents
- Introduction
 - Active Ribbon Technology
 - Description
 - Ribbons in the Digital World
 - User’s Guide
 - Operation
 - Using the RSM-24 Shock Mount Accessory
 - Amplification Considerations
 - The Sweet Spot
 - Proximity Effect and Working Distance
 - Microphone Technique
 - Stereophonic Microphone Technique
 - Care and Maintenance
 - Features and Specifications
 - Polar Pattern
 - Frequency Response
 - Warranty
 
Care and Maintenance
1. The SF-2 is a solidly built, precision instrument. Keep the following commonsense rules in 
mind when using and/or storing it and it will last a lifetime. 
2. Do not expose the microphone to severe shock or vibration, which could stretch the ribbon 
element.  If  the microphone is  accidentally  dropped,  test  it  to  see  if  it  was  damaged  before 
returning it to service. Low output or a dull sound would indicate a stretched ribbon.
3. Do not expose the microphone to direct blasts of air or strong air currents. Use a windscreen 
or suitable  blast filter when  close miking  vocalists or certain  types of  wind instruments. P-
popping does  not  necessarily damage the  ribbon element, but  it may produce  unacceptable 
preamplifier overload or cause damage to speaker systems.
4. Do not expose the microphone to liquids or caustic smoke.
5. Use a soft cloth to clean the microphone body. A small amount of denatured alcohol can be 
used to remove fingerprints and other stains.
6. Keep metal filings away from the microphone at all times. The SF-2’s powerful magnets can 
attract minute ferrous particles into the ribbon transducer. If these particles reach the ribbon 
element, the microphone will generate a scraping sound and a re-ribbon will be required. 
7. When not in use, store the microphone in its protective wooden case. If the microphone is to 
remain set up on a mic stand between sessions, cover it with its mic sock (provided with your 
SF-2).  Due  to  Royer’s  patented  direct-corrugation  method,  the  microphone  can  be  stored 
horizontally without damaging the ribbon element. 
8. Leave disassembly of the microphone to a trained technician. There are no user-serviceable 
parts inside.
Caution!
Keep  recorded  tapes,  spring-wound  watches  and  personal  credit  cards  using  magnetic  coding 
away from the microphone to prevent possible damage to these items by the transducer’s strong 
magnets.
Care for the Optical Black Finish
The SF-2's optical black finish is a sophisticated surface treatment designed to refract light rather 
than reflect it. This makes  the microphone appear less conspicuous, especially when  used with 
high intensity lighting or  within a camera shoot. The finish requires  occasional maintenance to 
retain a smooth, even appearance and to maintain its unique optical qualities. 
The  SF-2's  body  is  comprised  of  a  low-carbon  steel  alloy.  Its  finish  consists  of  black  chrome 
deposited  over  a  nickel  substrate,  creating  a  finish  that  minimizes  the  reflective  nature  of  the 
metal surface. A small amount of oil has been worked into the finish at the factory to protect it. 
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