Sonifex RB-SS10 is a 1U rack-mounting unit that produces a stereo analogue audio output from ten selectable stereo analogue sources. There are ten illuminated push buttons on the front panel, which select and indicate the current channel selection. The selection and indication is also available through a remote connector on the rear panel. As well as being able to act as a source select module, the RB-SS10 can act as a mixer, by enabling the mix mode (using the “remote” input). The front-panel headphone output has its own volume control, which is independent of the level adjustment for the main outputs, and has a maximum output level of +12dBu. The volume control can be made to alter the output level of the main XLR outputs also, by using a switch on the rear panel to enable/disable this feature.
To stop accidental selection using the switches on the front, there is an input on the rear to inhibit the front panel buttons. The gain for left and right inputs can be individually adjusted by using the preset potentiometers on the front panel. A LED on the front panel indicates that power is present. As well as routing the selected audio signal, the unit will also route a remote-control signal, input through the “remote” connector, to the selected input source, for starting external audio equipment such as a CD player. A designation-strip on the front panel is useful for giving the buttons a meaningful description. The strip covers the input gain controls so that once configured, they can’t be altered easily.
Inputs: Four XLR 3-pin female, balanced (can be unbalanced); two 25-way D-sub female, with three stereo channels, balanced, on each. Outputs: Two XLR 3-pin male, balanced (can be unbalanced). Remote start input/output: 25-way D-sub male. Remote select and switch inputs: 25-way D-sub female. Status outputs: 25-way D-sub female.
Input impedance: 20kohms. Output impedance: <50ohms. Maximum input level: +28dBu. Maximum output level: +28dBu. Frequency response: 20Hz to 20kHz +/-0.1dB, 600ohms load, ref 1kHz. Input gain: 8dB loss to 20dB gain, separately adjustable. Common mode rejection: >66dB typically. Noise: -96dB, unity gain, ref +8dBu. Headphone output: +12dBu maximum. Power source: 110V-120V, or 220-240V, switchable, 6W, filtered IEC inlet. Dimensions (WxDxH): 480 x 108 x 42mm, (1U). Weight: 1.6kg.