Ampetronic ILD9 Induction Loop Amplifier

£83.33 + VAT

Ex-install induction loop driver. Untested.

Line Input:

6.4mm Jack socket, fully balanced (unbalanced with mono plug).
Sensitivity: -40dBu) to +10dBu.
Common mode rejection > than 50dB below 500Hz. Overload protected.

Slave I/O:

Insert point for connection of Ampetronic Phase Shifter, Preamplifiers etc.
Can be used as output for recording purposes.
Signal level 1V RMS (+2.7dBu).

Metal Loss Corrector:

This control permits correction of the system frequency response when losses occur due to metal in the building. Loss adjustment is adjustable from 0 to 3dB per octave, using 1kHz as constant gain frequency. This does not compenstae for the power loss caused by the metal.

Loop Current:

9.6A peak signal current into a SINGLE TURN loop. Metering via front panel LEDs. These LEDs indicate the peak current, with intervals of 3dB.

Loop Voltage:

Greater than 36V peak, to enable good frequency response for larger, inductive loops. Patented circuitry prevents clipping to ensure EMC complience.

Loop Resistance:

Must be less than 2 Ohms but greater than 0.4 Ohms.


Compression range 30dB before overload. Front panel indication of compression level.
Efficiency: less than 0.25dB output change for a 25dB input change.
Attack and Decay time constants optimised for speech.
Frequency Response:

80Hz – 10KHz ±1.5dB at low level, measured as loop current. High frequency high signal level response is a dynamic variable and is a function of loop size, loop current and signal content to ensure that no RFI generation takes place. Internal time constants are very short.

Pre-Amp Power:

± 15V DC regulated output, up to 0.3A

AC Power Input:

230V AC nominal, 45-65 Hz.
160VA. Fuse T 1.6AF


Length: 432 mm.
Depth: 220 mm.
Height: 88 mm. (2U)
Rackmount kit available



CE Complience:

This equipment meets all the EMC and safety standards applicable.


Rack mountable in 2U space.
Rack mounting brackets RM9 available (see below for details)
Loop Condition Monitoring>
See special note below.

In stock