ampli guitar tda2050

[carletto1958]

Ho fatto un amplificatore circuito con tda2050 e intendo usarlo venire amplificatore per chitarra un, ma una causa di alta Impedenza non funziona poi vorrei tariffa Semplice un preamplificatore con Controllo di tono utilizzando Semplici 741 otl082 di cui ho un sacco, ma il Problema e Il Potere Circuito tda2050 e a 18 volt
di potermi suggerire venire tariffa grazie

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I did an amplifier circuit with tda2050 and intend to use it come a guitar amp, but a cause of high impedance does not work then I would rate Simple preamplifier with tone control using Simple 741 otl082 of which I have a lot, but the Problem and The Power and 18 volt circuit tda2050
I could suggest coming rate thanks

 

[audioguru]

A 741 opamp is too old to be used for audio. It has too much noise and has a poor high frequency response. A TL082 is a dual opamp with a very high input impedance but a TL072 audio dual opamp is a TL082 selected for low noise.
If the power supply for the TDA2050 is plus and minus 18V then 2 resistors, 2 zener diodes and 2 capacitors can reduce it to whatever you want for the preamp/tone controls, maybe plus and minus 12V.

 

[Tony Stewart]

Use two small motorcycle batteries and trickle charger for +/- 20V out, DC coupled to speaker.

Whats the problem? Preamp? Gain? This has gain= 22k/0.68k, dont need big caps on batteries, just low ESR types. All R's can be easily scaled up to 10x.