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Details of all products and services provided by Ampetronic can be found 

at www.ampetronic.com
Wall mount brackets are available for mounting the amplifier on the wall 

with appropriate fixings.
Microphone pre-amplifiers for 1, 2 or 5 microphones, as well as other line 

level signals. These can be powered from either the ±15V DC power 

socket on the rear of the unit, or a stand alone power supply.
Signal processing units are available for use with low spill array systems.
Input adaptors for a range of applications such as 100V line audio & low Z 

speaker systems are available.

This product carries a five year parts and labour warranty from date of 

shipment from Ampetronic. To qualify for the five year warranty, the 

product must be registered at www.ampetronic.com (products/warranty), 

without which the warranty will be valid for two years only.

The five year warranty is dated from the time the equipment leaves 

Ampetronic and NOT when it is installed.

Manufacturer: 

Ampetronic Ltd.

Northern Road,

Newark,

Nottinghamshire.

NG24 2ET

United Kingdom.

Declares that the product:

Description:

Induction Loop Driver

Type name:

ILD500

Conforms to the following Directive(s) and Norm(s):

Directive 2004/108/EC

EMC:

EN55103-1 : 2009 Emission

EN55103-2 : 2009 Immunity

 

Directive 2006/95/EC

Safety:

EN60065 : 2002

Date: January 2011

J.R. Pieters

Managing Director

Ampetronic Ltd.

WARRANTY

 

DECLARATION OF CONFORMITY

UP15401-5

ACCESSORIES

Summary of Contents for ILD500

Page 1: ...is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to any rain or moisture does not operate normally or has been dropped 9 WARNING To reduce risk of fire or electric shock do not expose this apparatus to rain or moisture The apparatus shall not be exposed to dripping or splashing and no objects filled with liquids such as vases shall be plac...

Page 2: ...9 Repeat step 6 for the other input if used 10 Listen to the magnetic field produced inside the loop area using a receiving device e g Ampetronic ILR3 or examine the performance in more detail with a field strength meter 11 Adjust METAL LOSS CORRECTION to achieve a flat frequency response QUICK START INTRODUCTION The ILD500 Induction Loop Driver has been designed as a high quality amplifier for us...

Page 3: ... the loop cable METAL LOSS CORRECTION Screwdriver adjustable control which compensates for the frequency dependent effects of metal SLAVE I O Post compressor signal for use with ancillaries 15V 150mA DC OUTPUT 3 pin power Mini DIN LINE INPUT 6 4mm Jack socket for balanced line level signals MIC INPUT XLR socket for use with balanced microphones GAIN BOOST Increases gain of MIC input by 15dB PHANTO...

Page 4: ...l cold LINE INPUT MIC INPUT SLAVE I O LOOP CONNECTOR Signal TIP SOURCE TO ILD500 SLEEVE RING LINE INPUT Connection of 3 pole plug Use Twin screened cable Must be 3m or less Unbalanced Balanced TIP RECORDING DEVICE TO ILD500 SLAVE I O SLEEVE RING Connection of 3 pole Plug to use Slave I O socket for recording output Signal 8 00mm 20 00mm use either NL4 connections 1or 2 or both as required 1 2 LOOP...

Page 5: ...nel exhaust of the unit Both of these vents must be unobstructed for satisfactory cooling If the unit is installed in an enclosed environment sufficient air flow into the enclosure must be provided through vents fans or other means such that the units exhaust air is not recycled to the inlet causing it to OVERHEAT Slave I O Output Metal Loss Correction Compression LEDs Current LEDs Overheat LED Mi...

Page 6: ...llary units such as microphone pre amps or signal processing units 1 Turn all controls fully anti clockwise 2 Connect the loop cable into the Loop connector supplied Where using a perimeter loop floor ceiling level the feed cable should be tightly twisted and less than 20m in length Total resistance of loop and feed must be between 0 3W and 2 0W at DC The Designing Induction Loops handbook contain...

Page 7: ...nce with respect to a Magnetic field strength This will vary across the coverage area due to layout metal loss and LOOP CURRENT b Frequency response Metal losses tend to increase with frequency and may require the adjustment of the METAL LOSS CORRECTION As a result of this analysis adjust the LOOP CURRENT and set the METAL LOSS CORRECTION on the rear of the unit to achieve best sound quality This ...

Page 8: ...eck that the LOOP ERROR or OVERHEAT LEDs are not illuminated Ensure the POWER LED is illuminated and not flashing Remove any connection to the SLAVE I O socket Check that the loop cable is connected terminated correctly and inserted into the LOOP OUTPUT socket Check the loop cable is not open circuit short circuit or connected to earth see Instability or high frequency noise section of Troubleshoo...

Page 9: ... currents at audio frequencies If the loop cable is run close to sensitive signal cables it may be possible to induce a signal back into the input of the amplifier causing feedback Cable runs and loop wires should be kept well apart from each other To avoid interference a proximity of 300mm should only be run for a few meters Always used balanced 3 wire circuits where possible 3 Instability can ca...

Page 10: ...e in rear of unit Unplug the loop and AC power supply from amplifier and replace the failed fuse with the spare fuse in AC power input fuse tray Reconnect the AC power supply and switch on If the fuse fails again return the unit to Ampetronic for evaluation it may well be covered under warranty which will be invalidated by removing the cover If the fuse does not fail a loop error may be indicated ...

Page 11: ...200 600W Loop Monitor Sensitivity 70dBu 245uV for full RMS 3 5mm 3 pole stereo jack socket output 0 675Vpk at 9 0Apk output Overload 5dBu 436mV RMS 15V 150mA DC Output Line Input 3 pin power Mini DIN socket 6 4mm 3 pole Jack socket Regulated DC output for powering Input Impedance 1MW Ampetronic pre amps accessories Sensitivity 30dBu 24mV for full RMS Environmental output Ventilation See Installati...

Page 12: ...e year parts and labour warranty from date of shipment from Ampetronic To qualify for the five year warranty the product must be registered at www ampetronic com products warranty without which the warranty will be valid for two years only The five year warranty is dated from the time the equipment leaves Ampetronic and NOT when it is installed Manufacturer Ampetronic Ltd Northern Road Newark Nott...

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