User's Manual
Table Of Contents
- Introduction
- SF-24V Vacuum Tube Stereo Ribbon Microphone
- Active & Vacuum Tube Ribbon Technology
- Description
- Applications
- Ribbons in the Digital World
- User Guide
- Using the SF-24V Vacuum Tube Stereo Ribbon Microphone
- Operation
- Power Supply Input Module
- Fuse Replacement
- Voltage Changeover
- 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-24V
- Specialized Stereo Recording Techniques
- Classic Blumlein Technique
- Mid-Side (M-S) Technique
- Care and Maintenance
- Care for the Satin Nickel Finish
- Care for the Optional Optical Black Finish
- Care for the SF-24V’s African Padouk Presentation Case
- Features
- Specifications
- Polar Pattern
- Frequency Response
- Wiring Diagram
- Warranty
Specifications
Acoustic Operating Principle: Electro-dynamic pressure gradient with active electronics
Polar Pattern: Symmetrical Figure-8
Generating Elements: Two 1.8-micron aluminum ribbons
Frequency Response: 30 Hz – 15,000 Hz ± 3 dB
Sensitivity: > -38 dBv Ref 1 v/pa
Self Noise: <18 dB
Output: Transformer balanced
Output Impedance: 450 Ohms @ 1kHz
Recommended Load Impedance: 1500 Ohms or greater
Maximum SPL: > 130 dB
Vacuum Tubes: (2) type 5840-W (Raytheon ) miniature with wire leads
Output Connectors: Two 3-Pin Male XLR connectors
Power Requirements: 110, 120, 220, 240-volts AC 50-60HZ (see manual)
Mic Dimensions: 270 mm X 39 mm (base) X 25mm (top) (10 5/8" X
1.5" wide (base) X 1" wide (top)
Microphone Weight: 572 grams (20.2 ounces)
Shipping Weight: 21 LBS
Finish: Dull Satin Nickel
Optional finishes: Optical Black Chrome and 18K Gold
Accessories: Camera style carrying case, dedicated power supply,
protective presentation case for the microphone, protective
mic sock, 20-foot shielded 7-conductor cable RSM-24
shock mount, IEC AC-line cord.
To learn more about Royer products and their usage, visit our website at www.royerlabs.com.
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