Divisible rooms - combining two HDL300 systems

HDL300 systems with an Ethernet switch
Last Updated: September 27th, 2023

Switchable configurations for an audio conferencing system can be useful for divisible rooms with movable dividers, partitions or walls. This article outlines how to use two HDL300 systems configured for use with a divisible room. This configuration is suitable for divisible rooms that change from two smaller rooms into a single large room.

When setting up a switchable configuration an Ethernet switch is added to the HDL300 system installations. The switch is used to route the audio signal from the microphone and speaker bars to each connect module.

Choosing a switch

 When choosing an Ethernet switch the following specifications should be considered.

  • Two-way A/B switch
  • Minimum of 100 Mbps data rate
  • Be able to pass PoE power
  • 2 - RJ45 input ports
  • 2 - RJ45 output ports
  • Network connection
    • For switching remotely via telnet, web browser or SNMP
  • Latching and non-latching switches are suitable

In most cases, an Ethernet A/B switch that meets these specifications will be suitable for setting up HDL300 systems into switchable configurations. Examples of some suitable switches are below.

Brand of switch
Product webpage
Cables Online
Black Box (North America)
Black Box (Europe)

Firmware requirements

Each HDL300 system should have the latest firmware version installed for an optimum audio conferencing experience. 

Room size considerations

Room size is an important consideration when choosing how to configure a divisible room. The divisible room should meet the size requirements for HDL300 systems when divided into smaller spaces and should meet the size requirements for a Dual HDL300 system when combined into a large space.

  • HDL300 - spaces up to 25' x 25' (7.6 x 7.6 m)
  • Dual HDL300 - spaces up to 30' x 50' (9.1 x 15.2 m)

HDL300 - combining two systems

Install the HDL300 systems according to the installation instructions, with the addition of the Ethernet switches as shown in the diagrams below.

Configuration 1
Two small rooms
Switch is set to "A"

Enlarge connection diagram

Configuration 2
One large room
Switch is set to "B"

Enlarge connection diagram

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