• 4-Channel 2 Display with Shift Page Digital Speaker Station
  • Select any 4 channels from up to 24 channels of audio
  • Displays 2 channels at a time with shift page
  • Displays swivel up and down for best viewing
  • Assign to a pre-defined role to make sure multiple devices are configured identically
  • Individual partyline and program audio speaker levels with speaker mute
  • Connects to main station over mic or Ethernet cable
  • Core Configuration Manager (CCM) browser-based tool (with software v3.0 or higher)
  • Powered by Powerline, Power-over-Ethernet or AC/DC adapter
  • Fits 4-gang standard US ANSI/NEMA OS-1 electrical box, a 4-gang wall box or optional S-MOUNT enclosure

Note: Access the HelixNet Cabling Calculator to calculate estimated maximum cable length for a single Clear-Com HelixNet digital partyline connection.

The HelixNet IP networking guide provides specifications, best practices and guidance for the integration of HelixNet into an existing or new IP network.


Item Part Number:
  • HKB-2X

Technical Specifications


Two intercom channels (Selectable) Program Audio (Assignable from Main Station


Intercom Line: (2) 3-pin XLR–M–F

Intercom Line Pin Function:

Pin 1: Ground

Pin 2: +30V DC and Audio

Pin 3: -30V DC and Audio

Headset: 4-pin XLR–M & 2.5mm TRS jack

USB: Micro AB

Microphone Pre-amplifier

Headset Mic Impedance: 200Ω (Dynamic)

Headset Mic Voltage: 1.7V (Electret selectable)

Limiter: +23dB

The following specified for a route to four-wire output at 0dBu out:

Mic Gain: 60dB (Dynamic), 45dB (Electret)

Frequency Response: 300Hz – 10 kHz ±3dB, contoured for Intelligibility

Headphone Amplifier

Load Impedance: >32Ω

Output Level: +12dBu before clipping

Sidetone: -12dBu (selectable)

The following specified for a 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: 0dBu (selectable)

Power Requirements

4W DC Voltage Range: ±30-60 volts


32º – +113ºF (0 – +45ºC)

90% relative humidity


4.5 x 8.2 x 2.4 in (HxWxD)

(114 x 209 x 61 mm)


18.8 oz (0.53 kg)

Associated Products

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