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RDL RU-VCA6A  Digitally Controlled Six Channel Audio Attenuator
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    RDL RU-VCA6A Digitally Controlled Six Channel Audio Attenuator

    Manufacturer: Radio Design Labs

    Item #: RDL-RU-VCA6A   •   MFG #: RU-VCA6A




    Required Accessories

    The RU-VCA6A is a full-featured studio-quality dual-channel audio attenuator module for local and/or remote control of balanced or unbalanced line-level sources. The RU-VCA6A has six audio channels for level control of surround sound (5.1) or six individual analog audio channels. Each module can be remote controlled from a single or multiple locations. Rear-panel terminals provide flexible control options using a variety of RDL remote controls or OEM equipment.

    Audio levels are controlled in 0.5 dB steps using noiseless zero-crossing digital attenuators for optimum reliability, precise tracking and long-term click-free service. Exceptional wide-band low-noise performance makes the RU VCA6A suited to level adjustment in the most demanding applications. Rear-panel inputs and outputs may each be wired balanced or unbalanced.

    The RU-VCA6A powers up in one of two operating modes set by a rear-panel switch.

    • Features

      • Local or Remote Audio Level Control
      • Six Channel / Surround Attenuation
      • Noiseless Zero-Crossing Adjustment Steps
      • 96 dB Attenuation Range in 0.5 dB Steps
      • Data Bus Provides Adjustment of Multiple Modules
      • Multiple Remote Control Locations Possible
      • Precise Level Tracking on Each Channel
      • Balanced or Unbalanced Line Inputs/Outputs
      • Adjustable Ramp Up/Down Rates
      • Controllable Using Various RDL Remote Controls
      • Selectable Level Control Options:
      • Pushbuttons (Internal or External)
      • Momentary Pulses (External/Rotary Encoder)
      • 0 to10 Vdc or 10 kO Potentiometer
      • Selectable Power-Up Return to PRESET or LAST Level
      • Selectable MASTER/SLAVE Mode for Control Expansion
    • Specifications

      • Inputs (2, RU-VCA2A; 6, RU-VCA6A): >10 kŸ€ Balanced bridging, or Unbalanced, line level
      • Frequency Response: 10 Hz to 50 kHz (+/- 0.5 dB)
      • THD+N: < 0.005% (20 Hz to 20 kHz)
      • Gain: Adjustable from unity to <­V96 dB
      • Step Size: 0.5 dB
      • Headroom: > 18 dB (above +4 dBu)
      • Residual Noise: < -90 dB (referred to +4 dBu at unity gain)
      • CMRR: <-65 dB (50 to 150 Hz)
      • Crosstalk: <-95 dB (1 kHz, typ.); < -85 dB (20 Hz to 5 kHz); < -75 dB (5 kHz to 20 kHz)
      • Ramp Times: 0.5 second delay; then: 3 seconds to 10 seconds
      • (UP and DOWN times individually adjustable on front panel)
      • Indicators (10): Front-panel LEDs indicating relative audio level (8), MAX condition (green), MIN condition (red)
      • Audio Output (2, RU-VCA2A; 6, RU-VCA6A): 150 Ÿ€ balanced (may be connected unbalanced)
      • Ramp Output: 0 to 10 Vdc, (Ground-referenced) Note: Not intended to drive additional VCA 0-10V inputs
      • EQ Ramp Output: 0 to 10 Vdc, (Ground-referenced) Note: dc taper intended only to drive RDL Loudness EQ (ST-LEQ1)
      • Power Requirement: 24 Vdc @ 120 mA, Ground-referenced (RU-VCA2A); 24 Vdc @ 200 mA, Ground-referenced (RU-VCA6A)
      • Ambient Operating Environment: 0›X C to 50›X C
      • Case Dimensions: 5.75­" (14.6 cm) W x 1.65" (4.18 cm) H x 3.54­" (9.0 cm) D;3.9" (9.9 cm) D with connectors

    Add Accessories for your RU-VCA6A: