Auditory Trainers.
Details :
Children who are hard of hearing from infancy or
have gained hearing at a developed age, need to help to learn to speak.
They need to know words, their pronunciation, meaning and usage. With
patience and understanding, parents and teachers can achieve
heart-warming results.
Technical Specification:
Amplifier
IC-based output stage coupled with 2 transistor low-noise pre-amp-stage.
Freq. Range
150 Hertz to 8 Khz.
Gain Control
Continuously variable dB Attenuator Max. Volume 130 dB SPL.
Tone Control
2 Tone per channel:Hi-Low (Fixed)
Indicators
Separate indicators(VU Meters)
Switches
For 'Mike' and phono(induction loop system). For battery check.
Microphones
Electret-built in and external
Headphones
Dynamic, low impedance, Adjustable head-band and circumaural ear cushion.
Supply Voltage
6V; 1.5x4 R20(large size) cells if on battery. 230V; 50Hz. A.C. mains with built in power supply.
Current Drain
20 mA, Quiescent.
Max. Power
700 mW, per channel
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