NF 4C LP

NF 4C LP

1. Provide a full-range, low profile, PoE powered ceiling speaker that shall support four digital audio inputs received from a Dante® audio network, integrated 4x4 mix matrix, the ability to be powered by PoE, PoE+, or PoE++, and the ability to power up to three external passive ceiling speakers.
   1. Full-range, composite back can, PoE powered ceiling speaker with Dante audio networking and integrated DSP
      1. Driver Requirements
         1. Shall consist of a 4" (102 mm) full-range driver
      2. Performance Requirements
         1. Shall provide a frequency range of 106 Hz to 20 kHz, -10 dB below average SPL, measured on-axis in half space (per IEC 60268-5)
         2. Shall provide a frequency response of 180 Hz to 7.5 kHz, +/-3 dB in half space
         3. Shall provide a nominal conical coverage angle of 135° (1 kHz to 4 kHz)
      3. Input Requirements
         1. Shall support four digital audio inputs, received from a Dante audio network via an RJ-45 connector
      4. Output Requirements
         1. Shall support one internal speaker level signal and three external speaker level signals
            1. Shall provide a THD + Noise rating of 0.1% @ 1 kHz at 3 dB below clipping
            2. Shall provide a signal-to-noise ratio of 100 dB measured from 20 Hz to 20 kHz, unweighted
            3. Output power shall scale based on available PoE power class and number of external passive speakers connected
            4. Shall support 24 bit, 48 kHz D/A conversion
      5. DSP Engine Requirements
         1. Shall provide integrated audio DSP engine
         2. Shall provide a mix matrix such that all inputs can be discretely routed to any or all of the outputs
         3. Shall provide 4 DSP input channels with filters, dynamics, and gain processing
         4. Shall provide 4 DSP output channels with delay, filters, dynamics, and attenuation processing
      6. Configuration Software Requirements
         1. Shall provide PC-based DSP Configurator Pro software allowing flexible control of the digital signal processor’s fixed architecture
         2. Shall provide a Live mode for real-time control of parameters without compiling and file uploading to processor
         3. Shall provide an Emulate mode for offline configuration
         4. Shall provide single, scrollable window for viewing of all inputs and outputs, audio processing blocks, routing, mix points, and virtual routing
         5. Shall provide setup and configuration of digital audio processing tools including, but not limited to: Filters (high pass, low pass, bass shelving, treble shelving, and parametric); Dynamics processing (Compressor, Limiter); Delay processing; and Ducking
         6. Shall provide cut, copy, paste editing between processing blocks
         7. Shall provide matrix routing with integrated mix point gain adjustment between inputs and outputs
         8. Shall provide Group Master controls for consolidation of individual gain or mute control members of the same type into one point of control
         9. Shall provide Soft Limits settings to define upper and lower control limits on Group Masters for use with external controls
         10. Shall provide Presets for recall of any processing block setting, level setting or audio routing; presets shall be saved for the entire system, or any selected partial group of inputs, outputs, mix points, and DSP blocks
         11. Shall provide real-time metering of levels within each Input Gain, Compressor, Limiter, and Output Attenuation processing block in Live mode
         12. Shall provide a Meter Bridge window for real-time metering of all input and output channels with clipping indication in Live mode
         13. Shall provide keyboard-based navigation of configuration software utilizing directional controls, keyboard shortcuts, and spreadsheet software-style commands
         14. Shall provide file saving in both Live and Emulate mode
         15. Shall provide configuration file upload in Live mode
         16. Shall provide configuration and file saving of multiple, linked or networked processors from a single configuration software session
      7. Electrical Requirements
         1. Shall support 8 ohm direct connection to external NF 4C S LP passive speakers
         2. Shall support speaker level signals on three 2-pole, 5 mm captive screw connector
            1. Shall support a maximum wire gauge of 12 AWG per connection point
      8. Amplifier Requirements
         1. Shall utilize an efficient Class D amplifier design
         2. Shall be convection cooled and operate without fans or vents
         3. Shall provide an automatic clip limiter to detect onset of clipping by comparing input and output waveforms and automatically reduce gain without audible artifacts to eliminate clipping distortion
         4. Shall provide multiple protection circuits that activate during output shorts, thermal overload, or DC faults
      9. Dante Audio Networking Requirements
         1. Shall support receive channels over a local area network using standard Internet protocols
            1. Four Dante channels will be tied to the DSP input section
         2. Shall support Dante Controller software for digital audio network configuration
         3. Shall support Dante Domain Manager network management software for network security and logical segmenting.
         4. Shall support the AES67 standard for interoperability with other devices that also support AES67
         5. Shall provide an RJ-45 connector to support Dante audio network connection
         6. Shall synchronize to the master clock on the Dante network
         7. Shall be compatible with uncompressed digital audio at 44.1, 48, 88.2, and 96 kHz sampling rates with 24-bit resolution
      10. Power Requirements
          1. Shall support and automatically detect via LLDP three common PoE standards
             1. PoE++ Power Class 5 (802.3bt)
             2. PoE+ Power Class 4 (802.3at)
             3. PoE Power Class 3 (802.3af)
      11. Control Requirements
          1. Shall support remote control operation via external control system using Simple Instruction Set commands sent over the Dante network connection or USB
      12. Speaker Enclosure Requirements
          1. Shall provide a thin-edged rounded bezel surrounding the grille
             1. Shall provide a white, powder-coated, paintable magnetically-attached perforated steel grille with black scrim
          2. Shall measure 10.64” (270 mm) in diameter
          3. Shall measure 4.2” (107 mm) in height from front of ceiling tile to top of enclosure
          4. Shall require 9.3" (236 mm) diameter opening in mounting surface for speaker cutout
      13. Panel Requirements
          1. Shall provide an RJ-45 connector to support Dante digital audio network connection, PoE, and up to four incoming digital audio channels
          2. Shall provide a configuration port on one USB-C connector
          3. Shall provide three speaker outputs on three 2-pole, 5 mm captive screw connectors
      14. General Requirements
          1. Shall be sold in packages
             1. NF 4C LP-1 consisting of One Powered 4” Ceiling Speaker w/ Dante and DSP
             2. NF 4C LP-2 consisting of One Powered NF 4C P LP and One Passive NF 4C S LP
             3. NF 4C LP-3 consisting of One Powered NF 4C P LP and Two Passive NF 4C S LP
             4. NF 4C LP-4 consisting of One Powered NF 4C P LP and Three Passive NF 4C S LP
          2. Shall be compatible with Extron SGK SF3C Square Grille Kit
          3. Shall include V-rail and folding C-ring kits
          4. Shall meet regulatory compliances CE, FCC Class B, EN55024, EN55035, EN55032, VCCI Class B, IEC 62368-1, UL 62368-1, NFPA 90A, NFPA 70
             1. Shall be UL listed for plenum airspaces and meet UL 2043 for heat and smoke release
             2. Shall meet UL 1480 for commercial and professional audio systems
             3. Shall comply with appropriate requirements for RoHS and WEEE
          5. Shall provide five year parts and labor warranty
   2. Approved packages shall be Extron SF 4C LP-1, part number 60-2056-13; Extron NF 4C LP-2, part number 60-2056-23; Extron NF 4C LP-3, part number 42-337-43; Extron NF 4C LP-4, part number 42-337-43; no alternates or equals.