HDL9 Hearing Loop Driver



Contacta HLD9 is a modular hearing loop driver for perimeter or phased array configurations, suitable for large area applications such as theatres, conference facilities, sports arenas, concert halls and auditoria. HLD9 manages power extremely efficiently meaning that it emits very little heat from its compact packaging.

HLD9 is part of a new generation of drivers based on cutting edge loop technology aimed at taking the complexity out of loop design and specification, by allowing equipment and configuration to be determined by performance requirements rather than area. This has been achieved by producing drivers that are feature-packed, flexible, efficient and ultra-reliable.

To make the experience of using Contacta HLD9 as simple as possible, the driver includes sophisticated communications capabilities enabling remote set-up and control of levels as well as system interrogation and performance monitoring.


Suitable for large applications such as:

  • Theatres
  • Concert halls
  • Places of worship
  • Sports arenas
  • Conference facilities
  • Auditoria


  • Built-in 90º phase shift
  • Flexible configuration
  • Ultra-efficient power utilization
  • Sleep mode
  • High frequency compensation
  • Continuous self-testing
  • Accurate, lockable controls (front panel mounted)
  • Input and drive level indication
  • Intelligent protection system
  • Flexible audio inputs
  • Interface to external communication device


Specifying loop equipment and configuration by area can be misleading and lead to poor performing loop systems. Contacta is spearheading a new simpler approach to loop system design and specification by producing a range of drivers that are the most sophisticated and efficient on the market, allowing sufficient headroom to cope with any situation providing a thorough survey of the facility has been carried out and test measurements taken.

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