AUDIOropa - A Division of the Humantechnik Group

proloop LOS
Amplifier for induction loop
systems with low-overspill
A Division of the Humantechnik Group
Technical data
Mains connection:
230-240 VAC 50 Hz, 7-200 W
Maximum area: 300 m² acc. to IEC 60118-4
Induction loop output
Max. power: 14 A from peak to peak, 1-5 ms, 1 kHz,
2x 5 A RMS,
continuous 1 kHz, short-circuit-proof
Max. voltage: 48 V from peak to peak
Automatic Gain Control: 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.
„„ Uniform magnetic field
PROLOOP LOS
Art.-Nr: A-4252-0
„„ Gives the hearing aid user
free movement
„„ Low susceptibility to electric
field disturbances „„ High efficiency, low power
onsumption
„„ Combo XLR / 6,3 mm jack
socket, configurable as microphone- or audio input
„„ 19 Inch chassis
Frequency range: 100-5000 Hz (± 3 dB)
Distortion: < 1 %
Cable connection: 2 screw connections
The PROLOOP LOS is a complete system for the operation of low overspill
systems. It includes the complete range
of electronics required in a single enclosure.
It is optimized for event halls or multiple
conference rooms equipped with inductive loops which require low overspill.
Outputs
Master: 0 dBm, RCA
Slave:
0 dBm, RCA
Headphone: 2 headphone jacks 6.3 mm
Inputs
IN 1: Combo XLR(F) / jack 6.3 mm
MIC 2.5 mV - 10 V / 10 kOhm with phantom voltage
LINE 37 mV - 10 V / 10 kOhm
IN 2: 2 jacks 45 mV – 10 V RMS / 10 kOhm
The various audio inputs (Combo XLR /
6,35 mm jack, RCA-socket) allow the
connection of different sound systems
without requiring further adapters.
Automatic Gain Control (AGC)
Dynamics: > 70 dB
Rise time: 2 - 500 ms
Fall time:
0,5 - 20 dB/s
Controls and displays
„„ Well suited for retrofitted installation in theatres, cinemas, concert halls, schools,
conference rooms, housing,
etc. (Possible for floor reconstructions only)
The Automatic Gain Control (AGC) guarantees a uniform field intensity, provides more stability of volume and excellent
sound reproduction.
The monitor output makes direct
connections to other induction loop amplifiers possible.
Master-loop current adjustment
Slave-loop current adjustment
IN1, IN2 amplification adjustment
Headphone volume adjustment
Indicator lights:
On / Off (LED, green)
Input level (LED, green)
Loop current (2 LEDs, green)
Dimensions(H x B x T) : 90 x 439 x 295 mm
19 inch chassis
Colour: Black
Item-No.:
A-4252-0 : Contains one amplifier and power supply
cable
Weight: 9.3 kg
AUDIOropa - A Division of the Humantechnik Group
HUMANTECHNIK - Im Woerth 25 - D-79576 Weil am Rhein
Telefon +49 (0) 76 21 / 9 56 89-0 - Fax +49 (0) 76 21 / 9 56 89-70
E-Mail: info@audioropa.com - Internet: www.audioropa.com
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