Perimeter Loops – Area Coverage (maximum)
Capable of driving the largest practical perimeter loops – theoretical area coverage >1000m2 for square areas, >1300m2 for rectangular areas, though the practical limit may be set by the installation environment. Ampetronic design tools and support are available to check the expected performance for your application.
Combined systems for very large areas
Multiple ILD1000G amplifiers can be combined using Ampetronic ILC Parallel DriveTM technology to drive systems in excess of 4000m2
Contact Ampetronic support for details.
Maximum Cable Length
The ILD1000G is designed for SINGLE TURN loops for optimum audio quality.
For loops with DC resistance from 0.5 to 3.0Ω , impedance to 3.5Ω
Maximum cable length is dependent on cable type and on the application:
||Maximum Cable Length (m)
|1.8mm2 flat copper tape
* 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.
||120W 230V AC nominal, 45-65Hz [120V option available]
Power switch and LED indicator on front panel
||XLR balanced microphone input for 200-600Ω microphones;
15dB user selectable gain boost; + 15V DC phantom power (selectable); sensitivity – 55dBu; front panel recessed gain control
|Input 2 Selectable microphone / line
||XLR balanced input, switched between microphone and line on the rear panel. Microphone specifications as for input 1
Line specifications: 15dB user selectable gain boost;
sensitivity -30dBu; overload protected; phantom power disabled in line mode; front panel recessed gain control
|Input 3 Line input
||6.3mm jack socket balanced line input; sensitivity -30dBu;
overload protected, front panel recessed gain control
||6.3mm jack socket insert point for connection of SP5 phase shifter
0dBu signal can be used for recording
||31.8Vrms 45V peak at maximum output current
||• 9.2Arms (13Apk) continuous 1kHz sine wave peak >13A
• Short term peaks >19A
• Front panel recessed control
• Drive current indicated on 6-LED display in 3dB increments
||Neutrik NL4 Speakon (supplied)
||Provides access to actual loop current via a 3.5mm stereo
headphone connector on front panel
||A pair of isolated relay contacts to indicate system status;
fault = open circuit: system O.K. = short circuit
||80Hz to 6.5kHz
|Automatic gain control
||The AGC is optimised for speech. Dynamic range >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.
||Three LED fault indicators on the front panel;
• Overload – delivering over the rated current or voltage
• Overheat – unit is too hot (mutes output signal)
• Loop error – short circuit / open circuit error
||A pair of relay contacts are provided for remote fault monitoring
||To supply Ampetronic ancillary units ±15V DC 0.15A power outlet on rear panel
||Forced ventilation. Air intake on left panel, air ejection at rear
||Full width 1U 19″ rack mount
Width 430mm Depth 220mm Height 44mm
• 1U 19″ rack mount (brackets included)
• Wall mounting (requires additional brackets)
||IP20 rated; 20 to 90% relative humidity; 0 to 35ºC