CLD1 Induction Loop Driver


The CLD1 Compact Loop Driver has been designed as a high quality stand-alone induction loop driver for ticket counters, banks or other point of sales systems.

Available packages include:

  • Q400 Boundary Mic
  • Loop Coil


  • EM195A Desktop Mic
  • Loop Coil


  • EM-1.2 Tie-clip Mic
  • Loop Coil


  • Loop Coil only


  • EM195A Desktop Mic
  • Fabric Counter Loop Pad


  • System only

Williams AV is proud to offer Ampetronic Loop products in the United States and Canada. To purchase Ampetronic loop products in other countries, please visit

This product has the alternative model number of CLD 001.


Power Input 12V DC @ 1.0A max.
Fuse fitted to PCB, type T 1.6A L
Green LED Power indicator.
AC Power Adapter All integral 100-240V AC (CLD1/AC) 18W max.
Input 1 Microphone input
Suitable for unbalanced electret microphone
3.5mm mono jack socket
Input impedance 8kΩ.
6v bias via 10kΩ source
Sensitivity -60dBu for max output
Overload level -14dBu.
Recessed control on front panel
Input 2 Switchable line / microphone
Recessed switch on connector panel
Microphone as for input 1
Line input:
Input impedance 820kΩ
Sensitivity -20dBu for max output
Overload: [gt]+20dBu.
Drive voltage [gt]3.2Vrms [gt]4.5Vpk at maximum output current
Drive current 2.4Arms 3.4Apk continuous 1kHz sine wave
Short term peak [gt]4.8Apk
LED indicator on front panel
Loop resistance 0.3Ω to 1.0Ω resistive or [lt]1.3Ω maximum reactive impedance
Loop connector Vibration proof clamps, accept 0.5 to 1.3mm2
Frequency Response 80Hz to 6.3kHz ±1.5dB
Automatic gain Control AGC optimised for speech
Dynamic range [gt]36dB
Green LED indicator on front panel
Metal loss correction 0 to 4.5dB/octave
Recessed control on front panel
Cooling Natural convection
Dimensions 128mm, 74mm, 35mm
Weight 280g (CLD1), 400g (CLD1 AC)
Environment IP20 : 20 to 90% relative humidity, -20ºC to 50ºC
Mounting Horizontal or vertical panel or wall mount, with 2 screw fixings


5 Years

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