ILD 500 – Professional Audio Induction Loop Driver

ILD 500

The ILD 500 is a professional audio induction loop driver capable of driving loop areas of up to 7534 sq. ft. (700 sq. m.) with unsurpassed clarity of sound for both music and speech for superior intelligibility.[nbsp]

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

Coverage Area

ILD 500

Power Input 85W 230V AC nominal, 45-65Hz [120V option available]
Power switch and LED indicator on front panel
Microphone input XLR balanced microphone input for 200-600Ω microphones;
15dB user selectable gain boost; + 15V DC phantom power (selectable); sensitivity – 70dBu; front panel recessed gain control.
Line input 6.4mm jack socket balanced line input; sensitivity – 30dBu; overload protected; front panel recessed gain control.
Slave I/O 6.4mm jack socket insert point for connection of SP5 phase shifter
0dBu signal can be used for recording
Drive voltage 17.0Vrms (24.0Vpk) at maximum output current
Drive current 6.4 Arms (9.0Apk) continuous 1kHz sine wave
Short term peaks: [gt]13A
Front panel recessed control
Drive current indicated on 6-LED display in 2dB increments
Loop connector Neutrik NL4 (supplied)
Loop monitor Provides access to actual audio signal in loop
3.5mm stereo headphone connector on front panel
Frequency Response 80Hz to 6.5kHz
Distortion THD + N[lt]0.2% 1kHz sine at full current
Automatic gain Control The AGC is optimised for speech. Dynamic range [gt]36dB
Metal loss correction Corrects system frequency response due to metal structures in a building. Gain constant at 1kHz, adjustable gain slope from 0 to 3dB per octave. This does not compensate for signal loss from metal structures which can be significant.
Fault Monitoring Three LED fault indicators on the front panel:
Overload – delivering over the rated current
Overheat – unit is too hot (mutes output signal)
Loop error – short circuit / open circuit error
Ancillary To supply Ampetronic ancillary units +/-15V DC 0.15A power outlet on rear panel
Cooling Cooling is by natural convection from the product casing.
Size Half width 1U 19″ rack mount
Width 215mm Depth 220mm Height 44mm
Weight 3.2kg
Environment IP20 protection; 20 to 90% relative humidity; 0 to 35ºC
Mounting Freestanding
1U 19″ rack mount (requires additional rack tray)
Wall mounting (requires additional brackets)



No Firmware Found

Request More Info

  • Hidden
  • This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Design & Consultant Specs