I/O Expander with BLU link / EN 54-16 Compliant for Life Safety Applications

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The Soundweb London BLU-120 offers configurable I/O and a high bandwidth, fault tolerant digital audio bus.

The BLU-120 is configurable through HiQnet™ Audio Architect. A rich palette of logic objects and a “drag and drop” method of configuration provide a simple and familiar design environment.

This processor features a low latency, fault tolerant digital audio bus of 256 channels which uses standard Category 5e cabling giving a distance of 100m between compatible devices. Fiber optic media converters can be used to increase the distance between devices to over 40km.

Four card slots facilitate many different device I/O configurations. Each slot can accommodate any of six available I/O cards, including the Analog Input Card, Analog Output Card, Digital Input Card, Digital Output Card, AEC Input Card, and Telephone Hybrid Card. Each card supports four channels.

Analog Input Cards provide software configurable gain in 6dB steps up to +48dB per channel and software selectable Phantom Power per channel. Digital Input Cards and Digital Output Cards process AES/EBU and/or S/PDIF audio and offer a variety of clocking and syncing options. (Further information about the I/O cards can be found on dedicated datasheets)

Phantom Power, Sync, Signal Present and Clip information per channel is easily accessible, without the requirement for a PC, from clear front panel LED indication. Device-specific information such as Device Name, Device Type, Firmware Version Number, Time, IP Address and Subnet Mask is available from the front panel display. A bi-directional locate function allows devices to be identified both from and within HiQnet Audio Architect.

12 Control Inputs and 6 Logic Outputs allow the BLU-120 to be integrated with GPIO compatible devices. The Soundweb London Interface Kit, comprehensive documentation which details how Soundweb London systems can be integrated with third party control systems, is included within the installation of HiQnet Audio Architect.

The BLU-120 and the other members of the Soundweb London family provide the building blocks of the perfectly tailored system solution.

This signal processor is EN 54-16 Compliant for life safety applications.

Fiber Optic Media Converter Recommendation:

BSS Audio MC-1

JBL VerTec V4 DSP Preset Data is available from the V4 Preset Data Download Page on

V4 Preset Data Download Page


  • Four Input / Output Card Slots
  • Configurable Inputs / Outputs
  • Analog Inputs (with Phantom Power per Channel)
  • Analog Outputs
  • Digital Inputs (AES/EBU and S/PDIF)
  • Digital Outputs (AES/EBU and S/PDIF)
  • AEC Inputs (with Phantom Power per Channel)
  • Telephone Hybrid Card
  • Rich Palette of Logic Objects
  • 256 Channel, Low Latency, Fault Tolerant Digital Audio Bus
  • Clear Front Panel LED Indication
  • Informative Front Panel Display
  • Bi-Directional Locate Functionality
  • 12 Control Inputs and 6 Logic Outputs for GPIO Integration
  • Soundweb London Interface Kit for Third Party Control System Integration (Documentation)
  • HiQnet Device
  • Configuration, Control and Monitoring from HiQnet Audio Architect
  • EN 54-16 Compliant for life safety applications


  Version Language Size Uploaded
file type icon BLU-120 CAD drawing front
en updated: feb 2024
  en  842 KB feb 2024
file type icon BLU-120 CAD drawing rear
en updated: feb 2024
  en  1,1 MB feb 2024
Data Sheets
file type icon Soundweb London A&E Specs
updated: oct 2020
    73 KB oct 2020
file type icon Soundweb London Family Brochure
updated: oct 2020
    1,3 MB oct 2020
platform icon HiQnet Audio Architect
updated: dic 2023
    dic 2023
platform icon HiQnet Motion Control
updated: nov 2016
    nov 2016
platform icon HiQnet London Architect
version 6.02.R3, updated: nov 2023
6.02.R3     117 MB nov 2023
Information documents
file type icon MTBF Soundweb London 800 320 160 120
updated: oct 2020
    25,4 KB oct 2020
Application Guides
file type icon HARMAN Auditorium AV Solution for Business
updated: dic 2015
    dic 2015
file type icon HARMAN Training Theater AV Solution for Business
updated: dic 2015
    dic 2015
Install Guides
file type icon BLU Series Install Guide-English
updated: oct 2020
    1,47 MB oct 2020
file type icon EN 54 Certification
updated: oct 2020
    48,7 KB oct 2020

If any of the links above result in strange characters in your browser, please right-click the file to save it to your computer.


Chassis 19" (single rack space)
Custom I/O (card based) yes
Analog Inputs up to 16
Digital Inputs up to 16
AEC Inputs up to 16
Analog Outputs up to 16
Digital Outputs up to 16
Telephone Connection up to 4
Max Inputs/Outputs 16
Config Software
LCD Display yes
Logic Processing yes
RS-232 yes
GPIO yes
Signal Processing (MHz) no
Cobranet no
SWL Digital Audio Bus 256
AVB no
Dante no



HARMAN Professional Solutions:


I/O Expander with BLU link / EN 54-16 Compliant for Life Safety Applications