Ampetronic ILD100DC

Ampetronic ILD100DC Loop Driver special for cars boats etc


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SKU: ILD100DC Category: Tag:


The Ampetronic ILD100DC audio induction loop driver is in a class of its own, designed for mobile applications including boats, mini busses, small public transport vehicles and mobile homes. This compact and stylish unit is capable of driving loop areas in excess of 100m2 with an unrivalled clarity of sound for superior intelligibility. Based on proven and highly reliable technology it is backed by a full 5 year warranty and free technical support.

All connections are plug and socket style for simple quick installation. Configuration VOX switching sets priorities for each input. Twin phono (RCA) inputs provide a simple interface to hi-fi systems and televisions. Available with a range of microphones, interface cables and accessories.

Freestanding or wall mounted, the ILD100DC is the obvious choice for smaller installations such as video conference rooms, private homes, TV rooms, nursing homes, receptions and waiting rooms.

Applications Include:

  • Minbuses
  • Boats
  • Cars
  • Caravans & Mobile Homes


  • Low lifetime cost
  • Excellent proven reliability
  • 5 year warranty
  • Unrivalled intelligibility
  • VOX switching – configured to prioritise Mic 1 input
  • Built in tone control
  • Very compact – 216 x 124 x 44mm
  • 2 microphone inputs (electret)
  • 1 line input – twin phono (RCA) connectors for TV / hi-fi connection
  • Input adaptors and accessories for any audio input requirements,
    e.g. SCART lead, assorted microphones
  • Free technical support line for advice, design and install


The ILD100DC is designed for small vehicles but can be used to drive single turn perimeter loop applications from a 12v power source.

Room aspect ratio 1:1 2:1 3:1
Maximum area coverage m2 120 150 200


For any Induction Loop System, area coverage is dependent on several factors. Please check these assumptions and contact Ampetronic for advice if required:

  • The loop is 1-2m above or below the receiver height
  • There are no metal structures in the plane of the loop
  • There is sufficient voltage to drive the cable length – check table below.

Maximum Cable Length

The ILD100 is designed for SINGLE TURN loops for optimum audio quality. When maximum current output is required the ILD100 can drive

  • Loops with DC resistance from 0.2Ω to 0.8Ω
  • Impedance up to a maximum of 0.9Ω

When operating below maximum outpuit, the ILD100DC can drive longer cable lengths – contacts us for more details.

Maximum cable length is dependent on cable type and on the application.

Cable type Maximum Cable Length (m)
Normal Use* Transient Speech*
1.0mm2 copper 34 39
2.5mm2 copper 40 49
4.0mm2 copper 46 59
1.8mm2 flat copper tape 60 70


* Short term speech (e.g. service counter, airport PA system) can cope with limited clipping at high frequencies – Ampetronic recommends delivery of full current up to 1.2kHz for these applications.
Longer term usage or signals with music or high quality audio must deliver full current to at least 1.6kHz to prevent fatigue and give acceptable intelligibility. Many commercially available systems do not deliver sufficient voltage to reproduce critical high frequencies – ask us for more details.

ILD100DC Specifications


Power 120V and 12V DC options also available
Microphone input 2 inputs: 3.5mm mono connector for electret microphones
DC powering for electret capsules. (Requires MAT60 adaptor to take XLR balanced microphone input).
Front panel recessed gain control
Line input 2 x phono (RCA) connectors, impedance 60kΩ each side,
20kΩ differential. Sensitivity matched to SCART signal level.
Front panel recessed gain control


Drive voltage 3.0Vrms (4.2Vpk) at maximum output current
Drive current 3.4Arms (4.8Apk) continuous 1kHz sine wave
Short term peaks. 6.5A
Front panel recess drive control
Front panel LED indicates current peaks
Loop connector Lever cable clamp


Idle 1/6 peak Output Current (Speech) 1/3 peak Output Current (Pink noise) Full Power
Driver Channels Current (ARMS) Load Resistance (Ohms) AC In (W) BTU AC In (W) BTU AC In (W) BTU AC In (W) BTU
ILD1000G 1 9.2 1.5 19 65 50 147 115 296 320 659
ILD500 1 6.4 1.5 15 51 46 145 80 227 168 366
ILD300 1 4.9 1.0 8 27 18 57 32 91 66 142
ILD122 1 3.5 1.0 8 27 15 49 24 72 54 142
ILD100DC 1 3.4 0.5 1.02 3 6 19 12 37 20.4 50



Freq. response 80Hz to 6.5kHz
Automatic Gain Control The AGC is optimised for speech. Dynamic range >36dB
Front panel recessed input level control
Tone control Front panel recessed control


VOX switching To control prioritisation of microphone 1 input. 4 different actions when microphone 1 level is at the onset of compression. Options to attenuate or turn off other inputs when microphone 1 is active, and to turn microphone 1 off when below threshold if required.
Cooling Cooling is by natural convection from the product casing.


Dimensions Width 124mm Depth 216mm Height 44mm
Mounting options Freestanding
Wall/panel mounting – mounting holes provided on rear panel
Weight 1.3kg
Environment IP20 protection; 20 to 90% relative humidity; 0 to 35ºC



Ampetronic ILD100-datasheet-ILD100-lo-res-1