Contacta HLD9 Modular Induction Loop Amplifier - Large Facility

SKU: hld9
£910.80 (inc VAT)
£759.00 (ex VAT)
In Stock
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The Contacta HLD9 modular hearing loop driver is aimed at enhancing the listening experience in large facilities by using phased array or perimeter configurations. This feature-full driver is ultra-reliable and the controls on the front panel makes this unit simple to install and configure.

Contacta's HLD9 uses Class D technology which emits little heat. It's driver includes communication capabilities bringing on remote set-up, performance monitoring and control of levels with system interrogation.

The HLD9 is suitable for larger applications such as conference facilities, auditoriums, sports arenas, concert halls and theaters.

Contacta HLD9 Key Features:

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


  • Inputs-Input 1 (Microphone) Balanced XLR with switchable phantom power or ¼ inch TRS jack for electret microphone with 3.3VDC powered via 680Ω load
  • Input 2 (Line) Balanced XLR or ¼ inch TRS jack to ohmically isolated input
  • Loop Output-Loop connection 4-pole speakON connector
  • Loop drive current 10A RMS compliance current @ 1Khz sine wave
  • Loop drive voltage 36V RMS compliance voltage
  • Expansion-Contacta interconnect Input or output to or from additional Contacta products 90º phase shift selectable
  • Status-Volt-free relay contacts SPCO
  • Feature-External monitor & control Contacta communications processor interface
  • Audio-Frequency response 100Hz - 5kHz (±3dB)
  • Distortion Better than -40dB, inputs at nominal level
  • Automatic Gain Control-Digitally controlled Dynamic range: 40dB typical, Attack time: 33 milliseconds, Release time: 3.6dB per second
  • Controls-Microphone level Off, then to maximum in 50 1dB increments
  • Line level Off, then to maximum in 50 1dB increments
  • Loop current Off, then to maximum in 63 1dB increments
  • Displays-Microphone level 8 level bar graph with peak hold, 6dB steps
  • Line level 8 level bar graph with peak hold, 6dB steps
  • Output drive level 8 level bar graph with peak hold, 0.6A steps
  • Other indications LEDs for all setup and status indications
  • Dimensions 200(W) x 63(H) x 266(D) mm
  • Weight (Net) 2.50kg
  • Weight (Gross) 3.30kg


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