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Parlé ABC 2500 overview

The Parlé ABC 2500 is an all-in-one conferencing bar featuring Biamp Audio Intelligence to deliver a premium audiovisual experiences for small and medium conference rooms. It offers the same audio intelligence features of its VBC 2500 counterpart without the Biamp Video intelligence camera system. Onboard DSP powers the integrated AEC, AGC, and NRD, along with the 27-microphone array and Biamp Beamtracking™ technology to actively track and intelligently mix conversations from around the room. Room sound reinforcement is provided by a pair of Biamp audio intelligence optimized onboard speakers. 

Parlé ABC 2500 can be plugged directly into a UC System with a single USB connection or can be paired with a Devio SCR-10 for a BYOD system.

ABC 2500

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This article will highlight and explain some of the technologies implemented in the Parlé conferencing bar products and how the integrate into the environment.

Note: The new VBC/ABC 2500a models include support and connectivity for Assisted Listening Systems (ALS) (3.5mm mono jack)

  • The audio data source for the ALS output is the same as that for the loudspeakers but does not have the same DSP processing as that applied to the loudspeaker (This channel level should be non-variable to the ALS system)
  • Parlé microphone audio is not fed to the ALS output.
  • ALS output is a balanced (differential) signal with a max output level of 0 dBu (0.755 Vrms)


  • Install Manual                                      

Microphones and DSP processing

ABC 2500 under the hood

The ABC 2500 conferencing bar is designed around the same technology that is in the Parlé and Tesira products in one hardware device. Using 27 mics arranged in a vertical and horizontal array pattern, the ABC 2500 allows for pattern control on the Azimuth and Vertical fields of the room. In addition to the microphone array technology, the bar incorporates all the DSP elements that go into the Tesira products with an additional level of performance due to the nature of an all in one solution. 


Mic array and DSP features of the Parlé ABC 2500

  • 27 Element Mic Array (Horizontal and Vertical)
  • Tuned for Voice
  • Three Tracking Arrays
  • Advanced BeamTracking, Gain Control, Noise Cancelation and AEC processing

The large number of spaced capsules allow for mics to be setup as "clusters" forming very tight coverage over more frequencies on both the Azimuth and Vertical zones in the room. This allows for accurate tracking of seated or standing participants without the pickup of HVAC, adjacent room, or fan noise.

Tracking ZonesPolar Plot


Parlé capsule clusters are positioned and tuned to be focused in the speech range. This allows for an optimized approach of speech pickup even before DSP is introduced. This helps to get the best speech sound to the microphone before any additional processing is added. 



Biamp AI Noise Reductionclipboard_edbc34c977384ef1948972381629cb6cd.png

The Parlé ABC 2500 and VBC 2500 bars also feature Biamp's newest noise reduction algorithm that provides reduction of stationary room noise as well as non-stationary room sources. Previous noise reduction focused on sources in the room that were steady and made adjustments to reduce or remove. In our newest noise reduction intelligence, non stationary room sources that are short in duration or have a high variability can be reduced in the same manner. 

This noise reduction is based on a deep learning algorithm that uses matching learning to identify and isolate human speech from other sources such as typing, coughing, or sounds from outside the room.

AGC and Echo cancellation

clipboard_ede2e6d270f9bc3ff91d240a81fe69cb5.pngParlé conferencing bars feature the same onboard DSP technology as featured in the Tesira and Devio families to ensure optimum performance. This includes acoustic echo cancellation, AGC, speech sense, and non linear processing. 




Speakers and Amplification

Both VBC 2500 and ABC 2500 conferencing bars have speaker components to provide the best in room audio performance. Stereo speakers have been provided to prepare for UC stereo conferencing needs.

  • Parlé ABC 2500 Speakers and Amplification60mm low distortion drivers are provided for uniform wide coverage. 
  • The innovative enclosure design includes high volume, sealed enclosures that allow for complete isolation of the speaker assembly, passive radiator from the other bar components within the chassis.
  • Dynamic Bass enhancement (DBE) is included to enhance low frequency content when at lower volumes, as well as ensure zoro low-end distortions at high volumes.
  • 20W x 2 onboard amplification with distortion compensation DSP to maximize enclosure efficiency.

Biamp LaunchTM

Biamp Launch

Parlé ABC 2500 features Biamp LaunchTM, and a suite of functions designed to speed up and optimize the installation and tuning of a Biamp conference system.

Note: Downloadable Launch Report Card is not yet available for VBC and ABC conferencing bars. 

Auto-configuration may be initiated from the Launch button on the bar

The Launch-capable mics and amplifiers on the bar offer a known reference system to begin tuning the room. System adaptations are made based on measurements of the room’s acoustic response and the loudspeaker behavior. Provides a room performance grade – before & after Launch.

Note: Front panel LED's will flash until the Launch is initiated. A running Launch configuration may be cleared via factory reset procedure.




Rear Connectivity

Rear panel features locking USB type C connection for integration and locking power connector for the included 12 VDC power supply.

  • USB-C locking connection with provided USB cables
    • USB-C to USB C, 1M length, 20GBit/Sec Rated

  • Locking 12VDC ~5A Power adapter is included and recommended for most applications.

    • Note: Locking supply connection must be fully tightened and seated for proper power to be supplied to bar. If issue with enumeration is present, check for proper power supply seating.

    • ABC 2500a models include an additional 3.5mm mono balanced  output for connectivity to Assisted Listening Systems (ALS). This mirrors the speaker output of the bar. Microphone signal is not fed to this output.

The ABC 2500 has a rated max output of 50W. 


  Note: USB-C PD allows for up to 20V. The onboard electronics will support both USB or DC power, but it is recommended to plan to use the included PS-12-60 power supply in any cases where the host device or hub is not rated to supply the required USB-C power to the conferencing bar.


Integrated cable cover snaps in place for clean install. Includes rear panel mounting points for table, wall, or VESA mounts










Factory reset is available via the launch button on the Parlé conferencing bars. If reset is required, push and hold the launch button for 10 seconds to reset the ABC 2500 back to its factory settings including Launch configuration.








Note: Once the bar has been factory reset, the Microphone LEDs will slowly pulse red and green until Launch optimization has been initiated.


LED Indicators

Audio Privacy LED on the front with Red/Green mute status indication tied to UC mute status. When configured as a speakerphone, the ABC 2500 uses Human Interface Device (HID) communication that can synchronize privacy mute state and volume control if the UC application supports this communication. HID mute synchronization and AEC offloading are supported by various UC platforms.


Audio - Microphone LEDs: center front (behind the glass)
    Active with mic UNMUTED - Green
    Active with mic MUTED - Red
    Inactive - OFF

    Flashing slow Red/Green - Factory reset, ready for Launch.


Mounting and Accessories

The ABC 2500 and VBC 2500 ship with included table and wall mounts in the box for easy installation. Both included mounts attach via 4 mounting screws to the rear of the bar. The included wall mount allows for direct install to wall surface with cable pass-thru for ease of installation. 

                                     Bar Mounting Accessories.png

  • The Parle PMA 2000-DM accessory is a VESA mount adapter to allow for both the ABC 2500 and VBC 2500 to be attached to a display with top or bottom orientation.   

  • PMA 2000-DM CAD resources

  • The Parle PS-12-60 12VDC power supply is included with ABC/VBC 2500 hardware but may also be purchased separately if a replacement is needed. 

Biamp Camera Controller software

Biamp provides a camera management application that installs on PC or Mac for control and updates for the ViDi 250, ABC 2500 and VBC 2500 conferencing bars. The control software is available to download from the link below or the Biamp website.

Note: Due to the ABC 2500 being an audio bar only, the camera control software is only needed when upgrading firmware. This is not required for any other audio bar operations.

Biamp Camera Controller software is used for firmware updates to the ABC 2500 hardware. These firmware updates will be made available for download, then updates can be initiated via the camera software application. The firmware update is available via the settings page of the camera control application.

ABC2500 Firmware Update

Select the downloaded .pfa file and begin the update process.

USB Extension

The USB extension devices listed below have been tested with VBC and ABC 2500 conferencing bars. 

Mfg Model Intended Use USB Version(s) Date Tested Compatible


Icron USB 3-2-1 Starling 3251C-10-PL

Extender System
with 10m/33ft Plenum Cable

10m USB Extension

Custom Cable Included

  • USB 3.2: up to 5Gbps
  • USB 2.0: up to 480Mbps
  • USB 1.1: up to 12Mbps




Icron USB 3-2-1 Raven 3104 Pro
4-Port USB 3.2, 100m CAT 6a/7 Point-to-Point Extender System

4-port USB 3.2, 100m CAT 6a/7 Extender System

  • USB 3.2: up to 5Gbps
  • USB 2.0: up to 480Mbps
  • USB 1.1: up to 12Mbps




USB 2.0 Ranger 2304 CAT 5e Extender

CAT 5e/6/7 extension system

  • USB 2.0
  • USB 1.1



  • Device extender using included power supply; host extender does not have a power supply

Sound Control Technologies

RCU2S-BPC™ Base Kit

CAT 5e/6/7 extension system


USB 2.0 Supports up to 1080p@30



  • Tested by SCT and listed as compatible HW on site

Sound Control Technologies


RemoteTableKit™ MINI-USB

CAT 5e/6/7 extension system

USB 2.0 Supports up to 1080p@30



  • Tested by SCT
Kanex EXT-USB16FT USB Active Cable (16')
  • USB 3.0
7/20/22 YES
Binary  B-USB3-EXTAAP-15 USB Active (49.2') 15M
  • USB 3.0
7/20/22 YES

TechLogix Networx


USB-C - USB 3.1 with backwards support 

60w/20V/3A power support 10m length plenum rated

  • USB 3.1



  • Direct connection tested ABC2500 to PC (Windows 10/11)
  • Further testing in progress with Mac/ Biamp USB200
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