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 Home » Audio » Hi-Fi stereo preamplifier
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Hi-Fi stereo preamplifier    
This Hi Fi stereo preamplifier circuit is built with TDA1054 IC from SGS. TDA1054 is a 16-pin DIL package and integrates 2 separate preamp circuits. 
It is a low noise preamp with little or no problem in the building process.

The first half of the circuit (IC1a) it has an input sensitivity of 3 mV and has a frequency correction composed of C5, C3, R6 and R8. The bass signal coming from phono input is amplified while the high signal is attenuated.

Input sensitivity at a frequency of 1 kHz and output of 775 mVeff

  • phono: 3mV/50k
  • tuner: 220mV/50k
  • tape: 220mV/50k
  • maximum output voltage: 2.5 Veff
  • balance range = 12dB

Sound adjustment

  • low: +/- 13 dB
  • high: +/- 13 dB
  • distortion: < 0.05%
  • bandwidth: 20 Hz … 24 kHz
  • signal to noise ratio: > 65 dB
Category: Audio | Views: 932 |
 
 
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