Ampetronic

ILD300 Professional rack mountable loop driver

ILD300 Induction Loop Driver
Part code: ILD300

The ILD300 hearing loop driver is now obsolete – please see C5-1 Perimeter hearing loop driver

Specifications

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Design / Specify

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Features
  • Area coverage to >400 m2
  • Low lifetime cost
    Excellent proven reliability
    5 year warranty
  • Unparalleled sound quality
    Excellent intelligibility
    Speech optimised gain control
    High voltage headroom avoids high frequency clipping
  • Metal loss corrector corrects frequency dependent loss from metal structures
  • Very compact: 215 x 220 x 44 mm
  • Microphone (XLR) and line inputs
  • Extensive input adaptors available for any audio input requirements
  • Free technical support line for advice, design and install
Specifications

Perimeter Loops – Area Coverage (maximum)

Room aspect ratio 1:1 2:1 3:1
Maximum area m2 250 310 420

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

  • Loop must be 1-2m above or below the receiver height
  • There should be no metal structures in the plane of the loop
  • Sufficient voltage to drive the loop – check the cable table below

Maximum Cable Length

The ILD300 is designed for SINGLE TURN loops for optimum audio quality.

  • Loops with DC resistance from 0.2 to 1.2Ω
  • Impedance up to a maximum of 1.3Ω

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 49 57
2.5mm2 copper 67 85
4.0mm2 copper 70 91
1.8mm2 flat copper tape 87 101

 

* 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.

ILD300 Specifications

INPUTS

Power 35 W 230 V AC nominal, 45-65 Hz [120 V option available]
Power switch and LED indicator on front panel
Microphone input XLR balanced microphone input for 200-600 Ω microphones;
15 dB user selectable gain boost; + 15 V DC phantom power (selectable); sensitivity – 70 dBu; front panel recessed gain control
Line input 6.4 mm jack socket balanced line input; sensitivity – 30 dBu; overload protected; front panel recessed gain control
Link I/O 6.4 mm jack insert point for connection of SP5 phase shifter
0 dBu signal can be used for recording

OUTPUTS

Drive voltage 6.4 Vrms (9.0V peak) at maximum output current
Drive current 4.9 Arms (7.0 Apk) continuous 1 kHz sine wave
Short term peaks >10 A
Front panel recessed control
Drive current indicated on 4-LED display in 3 dB increments
Loop connector Wieland ST17/2 (supplied)
Loop Monitor Provides access to actual audio signal in loop
3.5 mm stereo headphone connector on front panel

AUDIO SYSTEM

Freq. response 80 Hz to 6.5 kHz
Distortion THD+N
Automatic Gain Control The AGC is optimised for speech. Range >36 dBu
Front panel recessed input level control
Metal loss correction Corrects system frequency response due to metal structures in a building. Gain constant at 1 kHz, adjustable gain slope from
0 to 3 dB per octave
This does not compensate for signal loss from metal structures, which can be significant

ADDITIONAL FUNCTIONS

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
±15 V DC 0.15 A power outlet on rear panel
Cooling Cooling is by natural convection from product casing

PHYSICAL

Dimensions Half width 1U 19″ rack mount
Width 215 mm Depth 220 mm Height 44 mm
Mounting options Freestanding
1U 19″ rack mount (requires additional rack tray)
Wall mounting (requires additional brackets)
Weight 2.25kg
Environment IP 20 protection; 20 to 90% relative humidity; 0 to 35 ºC
Standards

The ILD300 is CE marked to all relevant safety and EMC standards.
All Ampetronic amplifiers can be used to create a system that meets the requirements of IEC118-4 and the relevant recommendation of BS7594, however the design and installation of the system is equally important to meet these Induction Loop standards.
Some Ampetronic products are CSA registered for sale in the USA and Canada – contact Ampetronic for details.

Specifications (PDF)

Click here to open datasheet in a new tab

Specifications

Downloads

Book a demo

Design / Specify

ILD300 Professional rack mountable loop driver

The ILD300 is a professional audio induction loop driver capable of driving loop areas in excess of 400m2 with an unsurpassed clarity of sound for both music and speech for superior intelligibility.

Based on proven and highly reliable technology it is backed by an unrivalled 5 year warranty and free technical support. Improved power output provides outstanding value without compromise.

It has all the usual high quality features found on Ampetronic equipment such as metal loss correction and speech optimised gain control. The ILD300 is very compact and elegant, suitable for freestanding, wall mounting
or rack mounting.

Applications include

  • Conference facilities
  • Theatres
  • Sports halls
  • Educational environments
  • Places of worship
  • Lecture Halls

Equipment supplied as standard with the ILD300

  • Handbook and installation instructions
  • 197 x 252mm loop system present sign (deaf logo)
  • Region specific mains cable
  • Loop connector

Comparing the Ampetronic C-series vs ILD Range of Amplifiers

The Ampetronic C-series hearing loop drivers mark a substantial development in assistive listening technology. Each of the new drivers in the range offers key advantages over the previous ILD series:

• Class ‘D’ drivers in the C Series ensure minimal energy loss to heat, which in turn reduces running costs, extends product life, significantly reduces carbon footprint, and protects your investment.
• For example, over a year when using a C7-2 you could potentially use one fifth of the power required by an MLD7.
• The combination of a DSP and Class ‘D’ output stage has allowed us to achieve a frequency range beyond that mandated in the IEC60118-4 standard. This means that the end user can expect
better reproduction of high-frequency content when compared to that of an analogue hearing loop driver.
• “Standby” mode allows for reduced power consumption when the system is not in use, with advanced audio detection allowing the amplifier to jump back into action delivering signal when needed.
• Simple digital interface for accurate setup and adjustment, with advanced metal loss control for flat response, ensuring IEC60118-4 standard compliance across the full area.
• Network connectivity for remote reporting, commissioning, and adjustment.
• DANTE enabled versions available.

Each amplifier in the ILD range has an equivalent C-series driver, here are some quick comparisons:

ILD Range C-Series Equivalent
ILD300 C5-1
ILD252 C7-1
ILD500
ILD9 C10-1
ILD1000G

To find out more about the new C-series range, get in touch with us at the contact details below, or your local Ampetronic distributor!

Product Code:
The ILD300 hearing loop driver is now obsolete - please see C5-1 Perimeter hearing loop driver

  • Area coverage to >400 m2
  • Low lifetime cost
    Excellent proven reliability
    5 year warranty
  • Unparalleled sound quality
    Excellent intelligibility
    Speech optimised gain control
    High voltage headroom avoids high frequency clipping
  • Metal loss corrector corrects frequency dependent loss from metal structures
  • Very compact: 215 x 220 x 44 mm
  • Microphone (XLR) and line inputs
  • Extensive input adaptors available for any audio input requirements
  • Free technical support line for advice, design and install

ILD300 optional accessories

Ampetronic can supply an extensive range of additional accessories for installation – discuss your requirements with our sales team and we will provide materials and equipment to suit your application.

Input adaptors A range of input adaptors and interface cables to accept most audio source inputs, see table below
Installation Accessories 18mm x 0.25mm copper tape
PVC extrusion to protect copper tape
Installation / warning tape to fix cable or tape to a floor
Wall mount brackets WML1-U
Rack mount brackets RM-1U
Phase shifter SP5 for an array system requires a design which can be provided by Ampetronic

Input adaptors and preamplifiers

By using the appropriate input adaptor or preamplifier the ILD300 will accept multiple additional inputs or audio inputs from other sources:

Input type Adaptor
Additional microphone and / or line inputs MP221 preamps can drive up to 2 mics + 2 line inputs
100V line input
Low impedance speaker line
Line Level		 ATT-UJ & ATT-UX transformer isolated attenuators
Unbalanced microphones MAT1 adaptor

 

Perimeter Loops – Area Coverage (maximum)

Room aspect ratio 1:1 2:1 3:1
Maximum area m2 250 310 420

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

  • Loop must be 1-2m above or below the receiver height
  • There should be no metal structures in the plane of the loop
  • Sufficient voltage to drive the loop – check the cable table below

Maximum Cable Length

The ILD300 is designed for SINGLE TURN loops for optimum audio quality.

  • Loops with DC resistance from 0.2 to 1.2Ω
  • Impedance up to a maximum of 1.3Ω

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 49 57
2.5mm2 copper 67 85
4.0mm2 copper 70 91
1.8mm2 flat copper tape 87 101

 

* 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.

ILD300 Specifications

INPUTS

Power 35 W 230 V AC nominal, 45-65 Hz [120 V option available]
Power switch and LED indicator on front panel
Microphone input XLR balanced microphone input for 200-600 Ω microphones;
15 dB user selectable gain boost; + 15 V DC phantom power (selectable); sensitivity – 70 dBu; front panel recessed gain control
Line input 6.4 mm jack socket balanced line input; sensitivity – 30 dBu; overload protected; front panel recessed gain control
Link I/O 6.4 mm jack insert point for connection of SP5 phase shifter
0 dBu signal can be used for recording

OUTPUTS

Drive voltage 6.4 Vrms (9.0V peak) at maximum output current
Drive current 4.9 Arms (7.0 Apk) continuous 1 kHz sine wave
Short term peaks >10 A
Front panel recessed control
Drive current indicated on 4-LED display in 3 dB increments
Loop connector Wieland ST17/2 (supplied)
Loop Monitor Provides access to actual audio signal in loop
3.5 mm stereo headphone connector on front panel

AUDIO SYSTEM

Freq. response 80 Hz to 6.5 kHz
Distortion THD+N
Automatic Gain Control The AGC is optimised for speech. Range >36 dBu
Front panel recessed input level control
Metal loss correction Corrects system frequency response due to metal structures in a building. Gain constant at 1 kHz, adjustable gain slope from
0 to 3 dB per octave
This does not compensate for signal loss from metal structures, which can be significant

ADDITIONAL FUNCTIONS

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
±15 V DC 0.15 A power outlet on rear panel
Cooling Cooling is by natural convection from product casing

PHYSICAL

Dimensions Half width 1U 19″ rack mount
Width 215 mm Depth 220 mm Height 44 mm
Mounting options Freestanding
1U 19″ rack mount (requires additional rack tray)
Wall mounting (requires additional brackets)
Weight 2.25kg
Environment IP 20 protection; 20 to 90% relative humidity; 0 to 35 ºC

The ILD300 is CE marked to all relevant safety and EMC standards.
All Ampetronic amplifiers can be used to create a system that meets the requirements of IEC118-4 and the relevant recommendation of BS7594, however the design and installation of the system is equally important to meet these Induction Loop standards.
Some Ampetronic products are CSA registered for sale in the USA and Canada – contact Ampetronic for details.

UP15501-9 ILD300 Handbook

UP35501-8 datasheet ILD300

UP45503-1 ILD300-122 Outline Drawing

UP40002-3 wall mount

hidden tab
Features
  • Area coverage to >400 m2
  • Low lifetime cost
    Excellent proven reliability
    5 year warranty
  • Unparalleled sound quality
    Excellent intelligibility
    Speech optimised gain control
    High voltage headroom avoids high frequency clipping
  • Metal loss corrector corrects frequency dependent loss from metal structures
  • Very compact: 215 x 220 x 44 mm
  • Microphone (XLR) and line inputs
  • Extensive input adaptors available for any audio input requirements
  • Free technical support line for advice, design and install
Specifications

Perimeter Loops – Area Coverage (maximum)

Room aspect ratio 1:1 2:1 3:1
Maximum area m2 250 310 420

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

  • Loop must be 1-2m above or below the receiver height
  • There should be no metal structures in the plane of the loop
  • Sufficient voltage to drive the loop – check the cable table below

Maximum Cable Length

The ILD300 is designed for SINGLE TURN loops for optimum audio quality.

  • Loops with DC resistance from 0.2 to 1.2Ω
  • Impedance up to a maximum of 1.3Ω

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 49 57
2.5mm2 copper 67 85
4.0mm2 copper 70 91
1.8mm2 flat copper tape 87 101

 

* 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.

ILD300 Specifications

INPUTS

Power 35 W 230 V AC nominal, 45-65 Hz [120 V option available]
Power switch and LED indicator on front panel
Microphone input XLR balanced microphone input for 200-600 Ω microphones;
15 dB user selectable gain boost; + 15 V DC phantom power (selectable); sensitivity – 70 dBu; front panel recessed gain control
Line input 6.4 mm jack socket balanced line input; sensitivity – 30 dBu; overload protected; front panel recessed gain control
Link I/O 6.4 mm jack insert point for connection of SP5 phase shifter
0 dBu signal can be used for recording

OUTPUTS

Drive voltage 6.4 Vrms (9.0V peak) at maximum output current
Drive current 4.9 Arms (7.0 Apk) continuous 1 kHz sine wave
Short term peaks >10 A
Front panel recessed control
Drive current indicated on 4-LED display in 3 dB increments
Loop connector Wieland ST17/2 (supplied)
Loop Monitor Provides access to actual audio signal in loop
3.5 mm stereo headphone connector on front panel

AUDIO SYSTEM

Freq. response 80 Hz to 6.5 kHz
Distortion THD+N
Automatic Gain Control The AGC is optimised for speech. Range >36 dBu
Front panel recessed input level control
Metal loss correction Corrects system frequency response due to metal structures in a building. Gain constant at 1 kHz, adjustable gain slope from
0 to 3 dB per octave
This does not compensate for signal loss from metal structures, which can be significant

ADDITIONAL FUNCTIONS

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
±15 V DC 0.15 A power outlet on rear panel
Cooling Cooling is by natural convection from product casing

PHYSICAL

Dimensions Half width 1U 19″ rack mount
Width 215 mm Depth 220 mm Height 44 mm
Mounting options Freestanding
1U 19″ rack mount (requires additional rack tray)
Wall mounting (requires additional brackets)
Weight 2.25kg
Environment IP 20 protection; 20 to 90% relative humidity; 0 to 35 ºC
Specifications (PDF)

Click here to open datasheet in a new tab

Standards

The ILD300 is CE marked to all relevant safety and EMC standards.
All Ampetronic amplifiers can be used to create a system that meets the requirements of IEC118-4 and the relevant recommendation of BS7594, however the design and installation of the system is equally important to meet these Induction Loop standards.
Some Ampetronic products are CSA registered for sale in the USA and Canada – contact Ampetronic for details.

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