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00:42 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
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Category: Audio |
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