Clear-Com HLI-4W2
HelixNet 4-Wire Interface Module

OUR PART #  HLI-4W2


HelixNet Main Stations accept linking as well as two-wire and four-wire optional interface modules, offering seamless connectivity to LAN and virtually all common two-wire and four-wire audio systems.

Clear-Com's HLI-4W2 Interface Module provides an easy way to interface common four-wire audio paths such as matrix ports, cameras, and telephone circuits with a HelixNet Main Station.  Each of the two ports employ both transformer and electrical balancing to ensure incoming and outgoing audio paths are free of hum and noise.

Technical Specifications:

Dimensions: 7.36" x 2.24" x 1.54" (187 x 57 x 39 mm)

Weight: 13oz (0.35 kg)

Connectors: Intercom Line: (2) RJ-45 (Ethercon)

Four-wire Option Module Inputs:

  • Maximum Level Before Clipping: 18dBu
  • Nominal Input Level: 0dBu (selectable)
  • Input Impedance: >= 10KO
  • The following specified for a route to four-wire output at 0dBu out:
    - Frequency Response: 20Hz - 10kHz ±3dB
    - Distortion: <0.2% THD @ 1kHz
    - Noise: <-65dBu

Four-wire Option Module Outputs:

  • Maximum Level Before Clipping: 18dBu
  • Nominal Output Level: 0dBu (selectable)
  • Output Impedance: <= 100O
  • The following specified for a route from a dynamic headset:
    - Frequency Response: 300 Hz - 12 kHz ±3dB
    - Distortion: <0.1% THD @ 1 kHz
    - Noise: <-55dBu

Clear-Com HLI-4W2
HelixNet 4-Wire Interface Module

OUR PART #  HLI-4W2

Product Information:

HelixNet Main Stations accept linking as well as two-wire and four-wire optional interface modules, offering seamless connectivity to LAN and virtually all common two-wire and four-wire audio systems.

Clear-Com's HLI-4W2 Interface Module provides an easy way to interface common four-wire audio paths such as matrix ports, cameras, and telephone circuits with a HelixNet Main Station.  Each of the two ports employ both transformer and electrical balancing to ensure incoming and outgoing audio paths are free of hum and noise.

Technical Specifications:

Dimensions: 7.36" x 2.24" x 1.54" (187 x 57 x 39 mm)

Weight: 13oz (0.35 kg)

Connectors: Intercom Line: (2) RJ-45 (Ethercon)

Four-wire Option Module Inputs:

  • Maximum Level Before Clipping: 18dBu
  • Nominal Input Level: 0dBu (selectable)
  • Input Impedance: >= 10KO
  • The following specified for a route to four-wire output at 0dBu out:
    - Frequency Response: 20Hz - 10kHz ±3dB
    - Distortion: <0.2% THD @ 1kHz
    - Noise: <-65dBu

Four-wire Option Module Outputs:

  • Maximum Level Before Clipping: 18dBu
  • Nominal Output Level: 0dBu (selectable)
  • Output Impedance: <= 100O
  • The following specified for a route from a dynamic headset:
    - Frequency Response: 300 Hz - 12 kHz ±3dB
    - Distortion: <0.1% THD @ 1 kHz
    - Noise: <-55dBu
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