ILD122 Professional rack mountable loop driver

ILD122 Induction Loop Driver

Part code: ILD122

The ILD122 is a professional audio induction loop driver capable of driving loop areas in excess of 200m2 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.

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Specifications

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Design / Specify

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Features

Area coverage to >200m²
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 44mm
Microphone (XLR) and line inputs
Extensive input adaptors available for any audio input requirements
Free technical support line for advice, design and install
High voltage headroom suited to long cable lengths

Specifications

Perimeter Loops – Area Coverage (maximum)

Room aspect ratio	1:1	2:1	3:1
Maximum area 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:

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 ILD122 is designed for SINGLE TURN loops for optimum audio quality.

Loops with DC resistance from 0.2 to 1.8Ω
Impedance up to a maximum of 2.0Ω

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	76	87
2.5mm² copper	103	131
4.0mm² copper	108	140
1.8mm² flat copper tape	133	155

* 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.

ILD122 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	8.5 Vrms (12V peak) at maximum output current
Drive current	• 3.5 Arms (5 Apk) continuous 1 kHz sine wave • Short term peaks >7 Apk • 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 via a 3.5 mm stereo headphone connector on front panel

THERMAL HEAT CHART

				Idle		1/6 peak Output Current (Speech)		1/3 peak Output Current (Pink noise)		Full Power
Driver	Channels	Current (A_RMS)	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

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	1.8kg
Environment	IP 20 protection; 20 to 90% relative humidity; 0 to 35 ºC

Standards

The ILD122 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

ILD122 Professional rack mountable loop driver

Improved power output provides outstanding value without compromise. It boasts all the usual features found on Ampetronic equipment such as metal loss correction and speech optimised gain control.

The ILD122 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 ILD122

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

Area coverage to >200m²
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 44mm
Microphone (XLR) and line inputs
Extensive input adaptors available for any audio input requirements
Free technical support line for advice, design and install
High voltage headroom suited to long cable lengths

ILD122 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 ILD122 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	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:

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 ILD122 is designed for SINGLE TURN loops for optimum audio quality.

Loops with DC resistance from 0.2 to 1.8Ω
Impedance up to a maximum of 2.0Ω

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	76	87
2.5mm² copper	103	131
4.0mm² copper	108	140
1.8mm² flat copper tape	133	155

* 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.

ILD122 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	8.5 Vrms (12V peak) at maximum output current
Drive current	• 3.5 Arms (5 Apk) continuous 1 kHz sine wave • Short term peaks >7 Apk • 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 via a 3.5 mm stereo headphone connector on front panel

THERMAL HEAT CHART

				Idle		1/6 peak Output Current (Speech)		1/3 peak Output Current (Pink noise)		Full Power
Driver	Channels	Current (A_RMS)	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

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	1.8kg
Environment	IP 20 protection; 20 to 90% relative humidity; 0 to 35 ºC

The ILD122 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.

UP12501-14. ILD122 H.B

UP32501-13 datasheet ILD122

UP45503-1 ILD300-122 Outline Drawing

UP40002-3 wall mount

hidden tab

Features

Area coverage to >200m²
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 44mm
Microphone (XLR) and line inputs
Extensive input adaptors available for any audio input requirements
Free technical support line for advice, design and install
High voltage headroom suited to long cable lengths

Specifications

Perimeter Loops – Area Coverage (maximum)

Room aspect ratio	1:1	2:1	3:1
Maximum area 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:

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 ILD122 is designed for SINGLE TURN loops for optimum audio quality.

Loops with DC resistance from 0.2 to 1.8Ω
Impedance up to a maximum of 2.0Ω

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	76	87
2.5mm² copper	103	131
4.0mm² copper	108	140
1.8mm² flat copper tape	133	155

* 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.

ILD122 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	8.5 Vrms (12V peak) at maximum output current
Drive current	• 3.5 Arms (5 Apk) continuous 1 kHz sine wave • Short term peaks >7 Apk • 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 via a 3.5 mm stereo headphone connector on front panel

THERMAL HEAT CHART

				Idle		1/6 peak Output Current (Speech)		1/3 peak Output Current (Pink noise)		Full Power
Driver	Channels	Current (A_RMS)	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

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	1.8kg
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 ILD122 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.