Inductive transmission of audio signals allows users of hearing aids with a T-coil or induction loop receivers, e.g. the LR-202, to receive audio signals. Wireless transmission is an advantage of audio induction loop systems which makes it possible for the user to move freely within the loop.
Audio induction loop systems are used for various applications, e.g. as a hearing aid for the hearing impaired in houses of worship, theatres, cinemas, waiting rooms and lounges, as interpreting systems, for lectures in museums, exhibitions, etc.
With audio induction loop systems, an induction loop made of a wire winding is laid on the floor, the wall or along the ceiling and is controlled by a constant current amplifier. Thus, a magnetic field is created within the loop which induces a voltage into the T-coil of the hearing aid or into the induction loop receiver. In the receivers, this voltage is then converted again into an audio signal.
- Dynamic compressor
- Automatic talkover
- Metal loss correction 0-3 dB/oct.
- 3 mic/line inputs with 40 V phantom power, to be switched on additionally
- 6.3 mm input for inserting external devices
- Integrated SD card reader for reproduction of stored alarm messages
- 2-way tone control
- LED level meter
- 482 mm (19") rack installation with supplied mounting brackets
Technical specifications LA-402
|Loop current||14 A (peak)|
|Loop resistance||0.2-2 Ω|
|Room size||up to 750 m2|
mic 1.5 mV/6.8 kΩ, XLR, bal.
line 630 mV/10 kΩ, XLR, bal.
line 630 mV/4.7 kΩ, RCA, unbal.
alarm: 2 screw contacts
for connecting a switch
|Outputs||loop: 2 screw contacts|
|Equalizer bass||±10 dB, 100 Hz|
|Equalizer treble||±10 dB, 10 kHz|
|Frequency range||50-8,000 Hz|
|Admiss. ambient temp.||0-40 °C|
|Power supply||˜ 230 V/50 Hz/230 VA|
|Dimensions||482 x 88 x 280 mm, 2 RS|
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