Humantechnik Proloop LOS Induction Loop Amplifier

The PROLOOP LOS is a compact system designed to operate low overspill systems.

It integrates the entire electronic configuration required in a single enclosure to provide a flexibly sized, reliable low-overspill solution for the coverage of adjacent event rooms and assembly halls up to a size of 300 m².

The system is equipped with Automatic Gain Control (AGC) to produce stable sound with outstanding speech reproduction, even under difficult acoustic conditions. The values/data required to test the quality of the induction loop system can be conveniently picked up via an integrated monitor output.

Features

Uniform coverage throughout the room (no dead spots in the middle of the room) / No signal fluctuations when hearing-aid user moves his/her head
Reduced sensitivity to architecture-related magnetic fields
High efficiency, low power consumption / 19" design
Well suited for retrofitted installation in theatres, cinemas, concert halls, schools, conference rooms

Mains connection:	230 - 240 V AC, 50Hz, 25 - 700 W
Coverage:	300m² acc. to IEC 60118-4, single-loop

Induction loop output
Max. power:	60 A from peak to peak, 1-5ms, 1 kHz, 2 x 13 A RMS, continuous 1 kHz, short-circuit-proof
Max. voltage	47 V from peak to peak
Output AGC:	Sets voltage and power for steady signals like oscillation and sine curves after 0.6-1 seconds to -10 dB. Short pulses and normal program signals are not limited
Frequency range:	100 - 5000 Hz (±3 dB)
Distortion::	< 1%
Cable connection:	2 screws on the rear panel of the amp

Outputs / Inputs
Master OUT:	0 dBm, RCA (with AGC function)
Slave OUT:	0 dBm, RCA (with AGC function)
IN 1:	Combined XLR / 6.35 mm connection plug
MIC sensitivity:	2.5 mV - 10V RMS / 10 kOhms
Phantom voltage:	9 - 20 V or LINE sensitivity 37 mV - 10V RMS/10 kOhm
IN 2:	Dual RCA connections, 45 mV - 10V RMS / 10kOhm
SCART (IN/OUT):	Dual SCART connection plug,50mV RMS IN (TV) / OUT (DVD-VCR-SAT)

AGC
Dynamics:	> 70 dB
Rise time:	2 - 500 ms
Fall time:	0.5 - 20 dB/s
Rise and fall times depend on the currently active channel

Controls & Displays
Loop setting:	0 - 300m² (loop-1 and loop-2 potentiometer; coverage depends on the loop configuration)
Power supply:	LED green, lights up with mains connection
Correct input signal:	LED green, lights up when the AGC input is active
Input level:	IN 1 and IN 2 can be adjusted separately
Induction loop power:	LED green

Enclosure
Dimensions (H x W x D):	88 x 438 x 280 mm
Colour:	Black