Royer Labs SF-24V - Manual (Page 4)

Description
The SF-24V vacuum tube stereo coincident ribbon microphone is the only microphone of its
kind available, combining high audio performance with outstanding separation and imaging. It is
a modern ribbon design, with no audible diffraction effects or cavity resonance. The SF-24V's
active electronics produce an output comparable to phantom powered studio condenser
microphones and because the ribbon elements are electronically isolated from the outside world,
the possibility of ribbons becoming damaged as a result of faulty wiring, brownouts or phantom
power supply defects is virtually eliminated.
The SF-24V is a compact, stereophonic ribbon microphone array consisting of two matched
microphone elements that are placed one above the other. Each transducer is positioned at 45º to
the left and right of center, or 90º from each other. When held vertically, connector down and the
“ROYER” logo facing the sound source, the upper transducer is OUTPUT 1 and the lower
transducer is OUTPUT 2, from the perspective of an observer behind the mic.
The microphone
elements are each bidirectional (figure-8) and may be addressed from either side with equal
sensitivity. The in-phase signals are achieved when the microphone is addressed from the front,
as indicated by the “ROYER” logo. If, however, the microphone is suspended upside down, the
connections to the preamplifier should be reversed since what was the left transducer is now
responding to signals from the right and vice versa.
Your SF-24V is supplied with a dedicated power supply and 7-pin microphone interface cable.
The output for each channel consists of a chassis mounted 3-pin male XLR connector. These are
identified as OUTPUT 1 and OUTPUT 2, and correspond to the lower and upper transducers,
respectively.
The SF-24V is reasonably tolerant of shock and vibration, but care should be taken to prevent
accidental stretching of the ribbon elements due to rough handling. This is covered in the Care &
Maintenance section of this manual. The performance of the microphone is unaffected by
changes in temperature or humidity.
Applications
The SF-24V is a highly versatile microphone, ideally suited for a wide range of critical recording
applications. From drums, acoustic stringed instruments and stereo vocals to ensembles like big
band, orchestra and jazz groups, your SF-24V will capture performances with uncanny realism
and a beautifully full stereo image.
Because of the SF-24V’s coincident crossed figure-8 pattern, M-S (mid-side) recording from one
microphone is easily achievable. Once a recording has been completed using the proper
orientation, the sound field can be adjusted from pure monophonic to “super wide" or
exaggerated when compared to crossed figure-8's.
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