MVC 121 Plus

MVC 121 Plus

1. Provide a stereo audio mixer with a digital signal processing platform for audio signal mixing and control that shall support two mono analog inputs capable of microphone or line level signals, one stereo line level input, and two stereo line level outputs.
   1. Three input, two output stereo audio mixer with digital signal processing
      1. Input Requirements
         1. Shall support two mono, microphone or line level, balanced or unbalanced signals on one 6-pole, 3.5 mm captive screw connector
         2. Shall support one stereo line level, balanced or unbalanced signal on one 5-pole, 3.5 mm captive screw connector
         3. Shall provide selectable +48 volt phantom power for condenser microphones on each mic/line input
         4. Shall provide analog to digital conversion at 48 kHz sampling rate with 24-bit resolution
      2. Output Requirements
         1. Shall support one fixed stereo line level, balanced or unbalanced signal on one 5-pole, 3.5 mm captive screw connector
         2. Shall support one variable stereo line level, balanced or unbalanced signal on one 5-pole, 3.5 mm captive screw connector
         3. Shall provide digital to analog conversion at 48 kHz sampling rate with 24-bit resolution
      3. DSP Engine Requirements
         1. Shall support mixing the two microphone or line level inputs, with the stereo line level input for output to dual stereo line level outputs
         2. Shall provide audio digital signal processing on all inputs and outputs
      4. Audio Device Requirements — Input to Output
         1. Shall provide a signal-to-noise ratio greater than 100 dB measured from 20 Hz to 20 kHz, at maximum output, unweighted
         2. Shall provide a THD+N measurement of less than 0.02% measured at 1 kHz, at maximum output level
      5. Configuration Software Requirements
         1. Shall provide PC-based DSP Configurator software allowing flexible control of the unit’s digital signal processing tools, including mixing
         2. Shall provide a Live mode for real-time control of parameters without compiling and file uploading to mixer
         3. Shall provide an Emulate mode for offline configuration
         4. Shall provide single window view of all inputs and outputs, audio processing blocks, and mix points
         5. Shall provide setup and configuration of digital audio processing tools including, but not limited to: Filters (high pass, low pass, bass, treble); and multiple gain stages
         6. Shall provide cut and paste editing between processing blocks
         7. Shall provide integrated mix point gain adjustment between inputs and outputs
         8. Shall provide Soft Limits settings to define upper and lower control limits for use with external controls
         9. Shall provide real-time meters of levels within each Input Gain and Output Volume processing block in Live mode
         10. Shall provide a Meter Bridge window for real-time metering of all input and output channels in Live mode
         11. Shall provide keyboard-based navigation software utilizing directional controls, keyboard shortcuts, and spreadsheet software-style commands
         12. Shall provide file saving in both Live and Emulate mode
         13. Shall provide file upload in both Live and Emulate mode
      6. Control Requirements
         1. Shall support bidirectional RS-232 on 3-pole, 3.5 mm captive screw connector
         2. Shall support USB 2.0 control on female mini USB B connector
         3. Shall support remote control operation via external control system using Simple Instruction Set commands sent over RS-232 on 3-pole, 3.5 mm captive screw connector
         4. Shall provide three digital input ports on 3-pole, 3.5 mm captive screw connector for individual muting of each input by remote trigger
         5. Shall support disabling of front panel controls to prevent inadvertent or unauthorized changes to configuration settings
      7. Front Panel Requirements
         1. Shall provide a green LED for power indication
         2. Shall provide Configuration port on mini USB B connector
         3. Shall provide three encoder screws for independent gain control on each input
         4. Shall provide an LED level indicator for displaying input gain or output volume settings, and output level metering
         5. Shall provide a front panel knob for output volume adjustment
      8. Rear Panel Requirements
         1. Shall provide LEDs for phantom power indication
         2. Shall provide three inputs on 3.5 mm captive screw connectors
         3. Shall provide two outputs on 3.5 mm captive screw connectors
         4. Shall provide three digital input ports on 3.5 mm captive screw connector
         5. Shall provide one bidirectional RS-232 port on 3.5 mm captive screw connector
      9. General Requirements
         1. Shall provide energy-efficient external universal power supply with 2-pole captive screw connector
            1. Shall be universal in-line power supply with IEC power socket and support for international 100-240 VAC, 50/60 Hz standards
            2. Shall provide output of 12 VDC, 1 A, 12 watts
            3. Shall support use of optional Extron ZipClip™ 100 mounting bracket
            4. Shall meet energy efficiency level V and bear the UL Environment Energy Efficiency Certification (EEC) Mark
         2. Shall be enclosed in a rack-mountable 1U, quarter rack width metal enclosure
         3. Shall meet regulatory compliances
            1. Shall meet safety compliances under CE, c-UL, and UL
            2. Shall meet EMI/EMC compliances under CE, C-tick, FCC Class A, ICES, and VCCI
            3. Shall comply with appropriate requirements of RoHS and WEEE
         4. Shall provide three year parts and labor warranty
   2. Approved device shall be the Extron MVC 121 Plus, part number 60-1096-01; no alternates or equals.