recordinghacks

Royer Labs SF-24

Multi-Pattern Active Ribbon Stereo Microphone

The SF-24 is a phantom-powered version of the SF-12. Both are dual-ribbon stereo microphones with an onboard XLR5 connector, which is split via included jumper cable into two standard XLRM connectors.

Unlike dynamic ribbon designs, the SF-24 is not sensitive to input loading or impediance from the preamp. Onboard active electronics provide an ideal, constant load on the element, providing a much more sensitive response. This translates to much higher output as compared to a dynamic ribbon mic, allowing the use of any standard preamp, without concern about “impedance matching” controls.

Like the R-122, the so-called “amplifier circuit” in the SF-24 actually reduces the gain coming from the step-up transformers attached to the two ribbon transducers. The active circuitry performs impedance conversion only, and its output is transformerless.

The resulting self-noise is 18dBA.

The SF-24 ships with an elastic shockmount, a padded storage case for the mic, and a padded flightcase to store the mic, shockmount, and XLR5F-to-dual-XLR3M breakout cable.

The Royer Labs SF-24 is also known as: SF24.

Specifications

Frequency Response - BlumleinClick Graph to Compare!

Pickup Patterns	Pads & Filters
Bidirectional (12.5 mV/Pa; 40 - 15,000 Hz) Blumlein (12.5 mV/Pa; 40 - 15,000 Hz)

Ribbon Construction	Impedance	SPL/Noise
Length: 31.7mm Width: 1.58mm Gauge: 1.8 microns	200 Ohms (Low)	Max SPL: 130 dB Self-noise: 18.0 dB(A)

Weight	Length	Max Diameter	Interface(s)
583g (20.56oz)	270mm (10.63'')	39mm (1.54'')	5-pin XLR male (2)

Power Specifications
Requires phantom power Phantom voltage: 48v

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