Some basic questions about the audio amplifier

[numeness]

I have constructed an Audio Amplifier using TDA 2050 single supply but I am having difficulty understanding the circuit.

It contains the TDA 2050, (32W hifi audio Amplifier) with Vs = +15 V.

Can anyone please help explain the detailed functionality of this circuit, such as

1- Why do we need voltage divider (R1 and R2)? Can't we use direct Vs as +7.5 V and remove R1?

2- How do we calculate its gain ? (I got around 33, is that right?)

3- How do we calculate its cut-off frequency? (upper and lower)? (I got 3.2883 Hz?)

4- Why there are different types of capacitors?

5- Can we change non-electrolytic with electrolytic capacitors and vice versa?

7- What is the purpose of C1, C2, C3, C4, C5, C6 and C7?

8- What happens if we remove C4 ?

9- What happens if we remove C6 ?

10- Do we need to change the capacitance of capacitors if we increase/decrease Vs?

11- What is the main purpose of C5? We used that capacitor in breadboard but not in PCB.

[lejonklou]

Hi numeness!

This is not a Build You Own Amplifier forum. I suggest you register at DIYaudio.com, that's the forum you need.

[donuk]

Moreover many of the answers you seek can be inferred from the application pdf data sheet on the link you posted. Hope this helps.

Donuk sunny downtown York