Base System


1 ea. DDS-CCU Control Unit with Power Supply

5 ea. DDS-5980P Portable Microphone Base with Speaker

5 ea. 16" Gooseneck Microphone

1 ea. 50' Cable

4 ea. 7' Cable

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Digital Discussion System enables participants to hear each other clearly, across the room or across the country.


  • Each participant can have their own microphone
  • Each microphone can be designated as a "Chairman" or a Delegate
  • Operates as stand-alone audio system or can connect to external AV equipment or videoconferencing systems.


The Shure DDS-5900 series benefits:

  • Fully digital audio transmission
  • Control of up to 250 discussion units
  • Up to 32 units can be configured as interpreter units
  • 2 language interpretation channels
  • Up to 8 simultaneous open microphones
  • Support for 4 microphone operation modes: Automatic, FIFO, Manual and VOX (Voice activation)
  • 'Auto Off' of microphones
  • TCP/IP Ethernet connection for external control
  • DCS-LAN connection by use of shielded CAT5e cabling
  • Web browser interface for easy setup of system parameters
  • Discussion unit configurable as chairman, delegate or interpreter unit
  • Choice of button overlays for discussion unit
  • Scrambled audio to prevent eavesdropping


More information 

Conference Microphone Systems are an integrated network of microphones that are powered, organized and controlled by a CPU (Central Processing Unit).

These systems are excellent for most settings where several individuals need access to microphones in order to be heard by either an audience, or the other participants within the discussion group. Common uses are Board Meetings,  Q&A Panels, Review Groups

Additional common names for Conference Systems: (The Word “Systems” may sometimes be replaced with “Mics” or “Microphones” )

  • Delegate / Chairman Systems
  • Push-to-Talk
  • Discussion Systems


Popular Features:

Designated “Chairman” Microphone(s) which have the ability to override or mute the other microphones. This feature is useful when there are time constraints to be administered, the need to arbitrate, or simply to manage overly verbose participants.

A Central Processing Unit capable of managing a very large number of microphones (even hundreds) without the need need for a large mixing console, power outlets, and long cables from every microphone to a mixing console.  The System behaves similar to a computer network, with each microphone identified and Managed from within the CPU – typically as an automated function and requiring little or no human involvement except for very large complex installations (plug-and-play).

Daisy Chain Cables link all of the microphones together. These cables need only be long enough to reach from one microphone to the next allowing for less clutter and hazards. The interlinking of the microphones also creates a “network” of microphones allowing for moer sophisticated control of things such as how many people can speak simultaneously, and who has “Chairman” controls.

Push-to-Talk – Each microphone has a button which will activate the microphone when the person wishes to be heard, and deactivate or “mute” the microphone when not in use.

Intercom Speakers as well as headphone jacks are located in the base of each microphone allowing each participant to hear what the other speakers are saying even without additional PA or audio systems. This is a very popular feature in large discussion forums such the United Nations.  Translators may also be inserted into the system for user selection.

Discussion Systems

SKU: 364215376135191
  • FHM Audio Visual relies on the industry standard - Shure DDS 5900 Conference systems.

    Each system comes with a central control box - the DDS-CCU and the DDS-5980P portable Discussion Mic Base with 16" goose neck microphone (quantity specified by the customer). Also included are enough cables to connect the microphone system.

    Each Microphone in the system has a built in speaker. No additional equipment is required.  Should additional amplification or audio distribution be desired (for instance a large listening audience or live streaming to the web) the system has industry standard output connections for your audio console our house system.

    Need help? No worries! We can walk you thru the connections via phone or Skype - or send a friendly tech with the equipment to ensure the best possible user experience.