null Skip to main content
Clear-Com HKB-2X 4-Channel Digital Speaker Station
Clear-Com HKB-2X HelixNet 4-Channel Speaker Station

Clear-Com HKB-2X HelixNet 4-Channel Speaker Station

(No reviews yet)
SoundPro Item: 31852
Add to Wish List

Account manager
Have a Question? Ask an Account Manager

The HelixNet HKB-2X speaker station is a 4-gang flush-mountable user station with four channels over two shift pages supported by the HMS-4X main station.

This innovative front panel user station provides two keysets assignable to any intercom channel to each of the two pages, which the user can toggle between for a total of four channels. The station's displays can be swiveled for optimal viewing angle. The user station is provided with a headset connection, gooseneck mic connector, loudspeaker and Program Audio level controls.

Clear-Com HKB-2X Features

  • Easy to use front panel with OLED displays
  • Headset or hands free support with speaker and mic
  • 2 Keysets freely assignable to system channels
  • Shift page for 4-channel operation
  • Program Audio level control
  • Display swivels allowing optimal viewing angles
  • Powerline terminal plug connection
  • Ethernet Network port with PoE
  • HKB-2X HelixNet 4-Channel Speaker Station1
  • HelixNet System Hosts
    • Arcadia: Supports up to 64 HelixNet endpoints (HRM-4X, HKB-2X & HXII-BP) over Ethernet. Up to 24 Channels can be HelixNet Enabled using a Licensed Port for assignment to any HelixNet endpoints keyset.
    • HMS-4X(3): Supports up to 64 endpoints (HRM-4X, HKB-2X, HBP-2X, HXII-BP, HLI-2W2, HLI-4W2, LQ port). User stations can connect via HMS’s 2 Powerlines (see datasheet for limits) or over Ethernet via optional HLI-ET2 module. HMS allows use of 12 channels which can be expanded to 24 using optional license.
  • Connectors
    • Powerline(2): Powerline, Terminal Block 5 pole, 5mm pitch
    • Ethernet/PoE(1): RJ45
    • Headset: 4-pin XLR–M or 7-pin XLR-M with (2) PTT GPI (-X7)
    • Gooseneck Mic: 3-pin Tuchel
    • Power Connector: Terminal Block 2 Pole, 5mm
  • Microphone Pre-amplifier
    • Headset Mic Impedance: 200Ω (Dynamic)
    • Headset Mic Voltage: 1.7V (Electret selectable)
    • Limiter: +23dB
    • Route to four-wire output at 0dBu out:
    • Mic Gain: 60dB (Dynamic), 45dB (Electret)
    • Frequency Response: 300Hz – 10 kHz ± 3dB, contoured for intelligibility
    • Distortion: <0.1% THD @ 1kHz
    • Noise: <-65dBu
    • Headphone Limiter: 0dB (selectable)
  • Headphone Amplifier
    • Load Impedance: >32Ω
    • Output Level: +12dBu before clipping
    • Sidetone: -12dB (selectable)
    • Route from a four-wire input at 0dBu in:
    • Max Gain: 0dB
    • Frequency Response: 40Hz – 10kHz ±3dB
    • Distortion: <0.1% THD @ 1kHz
    • Noise: -65dBu
    • Headphone Limiter: 0dB (selectable)
  • Loudspeaker Amplifier
    • Load Impedance: 8Ω
    • Output Level: +18dBu before clipping
    • Route from a 4-wire input at 0dBu in:
    • Max Gain: 18dB
    • Frequency Response: 200Hz – 10kHz ±3dB
    • Distortion: <0.1% THD @ 1kHz
    • Noise: <-50dBu
  • Logic Inputs – PTT/GPI (-X7 only)
    • Assignable to talk, call, mic and headset keys
    • Input: 2
    • Style: Powered input, close contact to ground
    • Detection Voltage (Min): 3V
    • Input Voltage (Max): 5V
    • Output Voltage: 5V
    • Output Current (Max): 1mA
  • Device Power
    • Voltage: 48V DC
    • Current (Max): 0.3A
    • Power (Max): 14.4W
    • BTU (Max): 49BTU/hr
    • Input Power Connector: Terminal Block 2 Pole, 5mm
  • Environmental
    • 32º – +113ºF (0 – +45ºC)
    • 90% relative humidity
  • Dimensions (HxWxD)4-Gang NEMA, 4.5x8.2x2.4" (114x209x61mm)
  • Weight18.8oz (0.53kg)
  • Network Specifications (Firmware Version 4.2+)
    • Network Protocols
      • Ethernet IPv4 – Unicast Audio and Control
      • mDNS – Multicast Device Discovery
      • Layer 3-Routable with mDNS function limitations
      • HTTP-Management
      • RTP-Audio Transport
      • WavPack – Audio Codec
    • Network Ports
      • Unicast:
      • Port 80 TCP – System Management
      • Port 6001 TCP – System Management
      • Port 6001 UDP – Audio Streams
    • Multicast:
      • Port 5353 UDP – mDNS, Names, Discovery, Linking
      • Optional for device names and linking
    • Network Parameters
      • HMS-4X Endpoint Resource Use: 1
      • Bandwidth:
      • 300 (max) kbps from each HKB to HMS
      • 1200 (max) kbps from HMS to HKB
      • Network Jitter Tolerance: <= 128ms jitter buffer per audio stream receiver automatically adjusted to network performance
      • QoS tags: DSCP=41, Assured Forwarding (AF)
      • Link-Local Default IP address range:
      • System reserved IP range: for endpoints
  • Recommended Ethernet Switches
    • Managed Ethernet Switch – Layer 3
    • 100/1000 Base-T ports for endpoints
    • 1000 Base IP Trunks between switches
    • QoS configuration
    • Energy Efficient Ethernet bypass option
    • IGMP Snooping bypass option
    • Please refer to the Clear-Com HelixNet Network Guide for additional switch settings and network characteristics.
  • Notes
    • (1) Ethernet to HMS-4X requires HLI-ET2
    • (2) Not available for Arcadia. Contact Clear-Com
    • (3) HMS-4X is a legacy product as of 2022

In The Box

Clear-Com HKB-2X 4-Channel Digital Speaker Station

Customer Reviews