Inductive loop amplifiers are a must for modern PA installations to give equal access to annoucements to people with hearing disability by transmitting audio signals to hearing aids fitted with a "T" switch. They are ideal for use in churches, theatres, conference rooms, museums, waiting rooms etc.
This is a compact mixer amplifier for driving a 600m² 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.
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.
Features:
Each channel accepts input via XLR, 6.3mm Jack or RCA phono
Inputs switchable between mic and line with optional phantom power +40Vdc
Built-in siren for evacuation alert
Tamper proof channel volume, bass & treble and loop current level controls
Peak current LED indication
AGC (automatic gain control)
19" rack mountable
Loop cable not included, but can be purchased separately in 100m drums (804.651)
Specification:
Frequency response
50Hz - 5kHz±3dB.
Input sensitivity : Line
-6dBu/6k ohms
Input sensitivity : Mic
-56dBu/2k ohms
Power
230Vac, 50Hz, (150W)
Signal to noise ratio
75dB (line), 60dB (mic)
THD
<1%
Dimensions
430 x 280 x 88mm (2U)
Weight
7.2kg
The LA-600 has three 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.
The maximum size (600m sq) 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.
