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Please Note: requires PS-24AS Power Supply (sold separately)
Description
The RU-ASX4D is a four channel stereo audio selector with input gain adjustments and output level metering. The inputs and outputs are connected on rear-panel detachable terminal blocks. Each of the four stereo line level inputs accepts either a balanced or an unbalanced signal. Each input is equ... Read MoreRetail Price: $545.49 Our Price: $409.12
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Description
The RU-ASX4D is a four channel stereo audio selector with input gain adjustments and output level metering. The inputs and outputs are connected on rear-panel detachable terminal blocks.
Each of the four stereo line level inputs accepts either a balanced or an unbalanced signal. Each input is equipped with a rear panel screwdriver-adjustable input gain trimmer. Input signal levels between -15 dBV and +8 dBu may be set to the proper operating level as indicated by a stereo dual-LED VU meter. This assures ample headroom at all normal operating levels. The module is equipped with two identical dual-led VU meters, one on the front panel, the other on the rear panel. The maximum input level is +25 dBu.
Features:
The RU-ASX4D was designed for absolute silent switching of audio signals using only solid-state switching circuitry.
The output is stereo line level. Each output channel may be connected balanced or unbalanced. Each of the VU-meters, left and right, is calibrated to read +4 dBu for the corresponding balanced output.
A front-panel LOCAL/REMOTE switch enables either the front-panel buttons or the rear-panel remote control terminals provided on detachable terminal blocks. In the LOCAL mode, four keyboard style long-life pushbuttons on the front panel are used to select one input. When a button is pushed, the corresponding audio input is fed to the output and any previously selected source is shut off. Only one source may be selected at a time. If the button for a selected source is pushed again, all inputs are turned off. An LED above each pushbutton indicates the selected source. In the REMOTE mode, inputs are selected by a sequential remote control such as an RDL D-RCS4, by a momentary remote control such as an RDL D-RC4M or by an external open-collector momentary closure to ground. The RU-ASX4D may be remote controlled from a single or from multiple locations. When a source is selected, the RU-ASX4D provides a 25 mA open-collector output to control other equipment or modules.
Rear-panel DIP switches are provided to permanently activate the remote control terminals, to select the remote control mode (sequential or individual source selection), and upon power-up a return to either a pre-programmed source or to the last source used. The pre-programmed source is stored when the module is installed.
The RU-ASX4D offers exceptional headroom, very low distortion, excellent crosstalk isolation, wide flat frequency response and extremely low noise with very high common-mode signal rejection. It provides exceptional audio performance for the most critical applications in a professional audio environment.
The RU-ASX4D operates from 24 Vdc connected through a rear-panel detachable terminal block.
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Product Specs
Audio Inputs (4) | Stereo, Line level on Detachable Terminal Block |
Input Impedance | > 20 k balanced, >10 k unbalanced |
Input Level (for +4 dBu output) | -15 dBV to +8 dBu, adjustable on rear-panel trimmers |
Maximum Input Level | +25 dBu |
Common Mode Rejection | > 60 dB (50 Hz to 120 Hz) |
Headroom (above +4 dBu) | > 20 dB (unity gain) |
Frequency Response | 10 Hz to 20 kHz (±0.2 dB) |
Distortion (THD + N) | < 0.01% (20 Hz to 20 kHz) |
Noise (below +4 dBu) | < -85 dB (with any input selected); < -95 dB (with no input selected) |
Off Attenuation | > 85 dB (1 kHz), > 70 dB (20 kHz) |
Crosstalk | < -85 dB (1 kHz); < -65 dB (20 kHz) |
Front-Panel Switches | Momentary pushbuttons (4, 1 per input), LOCAL/REMOTE latching pushbutton |
Front-Panel Indicators (11) | Power, Selected channel (4), LOCAL/REMOTE selector (2), L and R Dual-LED VU meters (4) |
Audio Output | Stereo, Line level on Detachable Terminal Block |
Output Impedance | 150 balanced, 75 unbalanced |
Output Level | +4 dBu balanced, unbalanced output 6 dB below balanced output level |
Control inputs (5) | 1 mA, pulled to ground (4, source selection); 1 mA, pulled to +15 Vdc (SEL) |
Control outputs (5) | 25 mA, open-collector to ground |
Rear-Panel Indicators (4) | L and R Dual-LED VU meters |
RDL Remote Control Compatibility | D-RC4M, D-RCS4 |
Power Connection | Detachable Terminal Block |
Power Requirement | 24 Vdc @ 150 mA, Ground-referenced |
Ambient Operating Environment | 0° C to 55° C |
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