Like an SF-12, the SF-24 is actually two matched ribbon microphones placed one above the other, each aimed 45 degrees from center in the classic Blumlein configuration. The magnet/polepiece structure of each ribbon transducer allows a wide, uniform frequency range with no substantial peaks or dips, and the two 1.8-micron ribbons produce superb transient response. Frequency response is excellent regardless of the angle of sound striking the ribbons and off-axis coloration is negligible. The SF-24's extension cable comes with a Y adapter that splits into separate 3-pin male XLR connectors labeled "Upper" and "Lower" for the upper and lower capsules of the microphone (when held vertically).
Gain
Our Active Series ribbon mics (SF-24 and R-122) are as sensitive as phantom powered condenser microphones, allowing you to use almost any mic preamplifier or board pre (even those of nominal characteristics). Conventional ribbon microphones average 15 to 20 dB lower sensitivity than condenser mics, necessitating the use of high-quality, high-gain microphone preamplifiers for recording softer sound sources like acoustic instruments, vocals and room ambiance. The SF-24 contains two fully balanced, discrete head amplifier systems utilizing ultra-low noise FET's, each delivering a sensitivity of -37 dB. This lets you mate an SF-24 to any preamplifier with average gain characteristics. Even with quiet sound sources, you'll have enough gain to drive any recording medium.
Impedance Matching
The electronics in the SF-24 provide a perfect load to the ribbon elements at all times, allowing the microphone to deliver 100% of its full sonic potential regardless of the input characteristics of the following mic-pre. Due to its low-impedance output, SF-24's can also be used on extremely long cable runs with minimal signal loss.
A good impedance match is critical to ribbon microphones. Impedance mis-matching loads a ribbon improperly, resulting in loss of low end, diminished body, lowered sensitivity and an overall compromised performance. With our Active Series ribbon mics, the ribbon element lives in a perfect world. It sees an optimum impedance match at all times regardless of the following equipment, so its performance will never be compromised by the effects of improper loading. In addition, the ribbon element cannot be damaged by phantom power, electrical glitches or miswired cables.
Features
Phantom powered circuitry provides high output and impedance matching
High SPL Capabilities
No distortion up to maximum SPL rating
Extremely low residual noise
Ribbon element is not affected by heat or humidity
Absence of high frequency phase distortion
Equal sensitivity from front or back of element
Consistent frequency response regardless of distance
Rear side of mic records slightly brighter when three feet or closer to sound source
Recommended Applications
Electric Guitar Amps
Acoustic Guitar
Drum Overheads
Percussion Instruments
Brass and Woodwinds
Horn Sections
Acoustic Piano
Acoustic Guitar
Harp
Solo Strings & String Sections
Choirs and Orchestras
Commercial Broadcast
Voice Over
