The maximum size (75m≤ for LA-75) of an induction loop may be reduced due to field strength losses which are caused by metal in ceiling and floors. Small losses can be compensated with the function METAL LOSS CORRECTION.
Features:
2 microphone or line inputs
Input and output connection via PCB mount screw terminals
Tamper proof channel volume, bass, treble and loop current level controls
Built-in siren for evacuation alert
Peak current and siren LED indication
Vox priority
Mounting brackets supplied
Metal loss correction
AGC (automatic gain control)
Full installation and operation manual included
Loop cable not included, but can be purchased separately in 100m drums (804.651)
Specification:
Power supply
230Vac, 50Hz
Frequency response
50Hz - 5kHz
Input sensitivity : Line
-6dBu, 8k ohms
Input sensitivity : Mic
-56dBu, 2k ohms
Signal to noise ratio
75dB
THD
<1%
Dimensions
264 x 242 x 88mm
Weight
4.06kg
This is a compact mixer amplifier for driving a 75m² inductive loop, providing hearing aid users with high quality sound.It allows transmission of audio signals to hearing aids with a "telephone coil" and to inductive receivers.
Inductive sound reproduction systems are used for various applications, e.g. as an aid for persons hard of hearing in churches, theatres, cinemas, waiting rooms, meeting rooms, as interpreting installations, for lectures in museums, exhibitions, etc.
An induction loop consists of a wire winding laid into the floor, into the wall, or into the ceiling. Within this loop, a magnetic field is generated which will induce a voltage in the induction receiver. The receiver will reconvert this voltage into an audio signal. Any number of receivers can be operated within an induction loop.
The LA-75 has two channels to which units with a line output (e.g. CD player, tape deck, tuner) and microphones may be connected. The channel INPUT 1 is equipped with a talkover function which attenuates the volume of the other channel by approx. 40dB in case of an announcement. The loop amplifier may be used as a mixing amplifier or be integrated into most of the PA systems in the What PA? shop.
