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ProLoop D5 (300m2)

Order Code: 230-207

£539.00 ex. VAT

£646.80 inc. VAT

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This product carried a warranty for 2 years

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2 Year Warranty

If you have a pacemaker or ICD fitted you should read your user manual along with the FAQ's on our website before using this product. If in doubt consult your cardiologist. Click for more information.

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This product is suitable for users with hearing aids that have the 'T' or loop facility.

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PROLOOP D5: class-D loop driver for supplying rooms of up to 300 m² with inductive audio signals

Highly reliable, resistant against short circuits and with great audio quality: The »PROLOOP D5« provides middle-sized rooms with stable inductive signals. Comfortable controls enable the user to take full benefit of the versatility this system offers regarding its use in various rooms and deployment conditions.

The combo-XLR-3 in-port as well as a further phoenix contact are invidually configurable:

a) as audio-in (balanced)

b) as microphone-in (unbalanced)

A 12-V phantom power feed can be activated for the supply of condenser microphones.

The Automatic Gain Control (AGC) guarantees a constant field strength, a exemplary high stability in sound volume and good sound reproduction. A monitor port allows a direct connection with further loop amplifiers in master-salve configurations etc.





Easy to use

  • High current output: 5.8 A RMS
  • Resistant housing
  • Compact build / requires lesser rack space
  • Low heat generation
  • Active protection against short circuits
  • Combo-XLR-3 input and
  • input via phoenix contact, configurable for microphone (phantom power) or audio source
  • Input for 100V-signals, transformer-decoupled
  • Automatic Gain Control (AGC), loop current control
  • 6,3mm headphone jack for monitoring audio signals
  • Adjuster for metal loss compensation
  • Suitable for setting up Low-Overspill-Systems
  • 19-inch rack-mounting material included

Technical Information

  • Power supply: 90-265 V AC 50/60 Hz,
  • Passive protection: Fuse 3.15A
  • Maximum area:300 m² according to IEC 60118-4

Loop output

  • Max. current:5,8 A RMS / 16,4 A peak-peak
  • Max. tension:34 V RMS / 48 V peak-peak
  • Active protection against short circuits
  • Automatic Gain Control (AGC):Maintains a constant level of the audio signal
  • Frequency range:100-5000 Hz ( ± 3 dB)
  • Distortion:< 1% at rated power output, 1 kHz
  • Connector:1 Neutrik NL4 speakON-socket, layout 1+/1-


  • Headphones:Headphone output (on front face), jack plug socket 6,3 mm
  • 2x Slave Out with 0° and 90° phase shift, 6,3mm jack plug socket
  • FAULT-output:Device status via potential-free switch contact, not earthed (NO / NC)


  • INPUT 1 and 2:0,5 mV to 100 mV / 10 kOhm (MIC) or 25 mV to 4 V / 10 kOhm (LINE) phantom power configurable, Combo-XLR-3 socket (INPUT 1), Phoenix contact (INPUT 2)
  • 12V switchable phantom power
  • INPUT 3:100V-Input for connecting PA-systems
  • Slave In, 6,3mm jack plug socket

Automatic Gain Control (AGC)

  • Dynamics:up to 36dB

Controls and indicators

  • Loop current adjustment via rotary control
  • Amplification control for INPUT 1, 2 und 3 via rotary control
  • Adjuster for the reduction of metal loss
  • Indicators

Loop OK (LED, red)

Protect (LED, red)

Clip (LED, red)

ON / OFF (LED, blue)

  • AGC/Compression (2 green LEDs, 1 orange and 1 red LED)
  • Loop current (2 green LEDs, 1 orange and 1 red LED)


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