Transistor audio amplifier with dual voltage supply

Question

There are lots of similar topics, but I can't find answer that will satisfy me. So, basically I am trying to do a transistor audio amplifier with dual voltage supply (+/-12V). I found circuit like this on some topic:

But it doesn't seems to work for me. Here are LTspice circuit with Vout wavegraph:

Maybe anyone, knows where is the problem or can show me some simpler circuit with out differential transistor (maybe single transistor with push-pull output).

Best regards

---

Also, when I finally run this circuit, do You know how to rise the amplification of this circuit(?), for now it is like 30 V/V.

---

When I add a resistor that simulate speaker, the output waveform starts to get messy again and literally don't know why.

Answer 1

Q5 in the example circuit is a PNP transistor but, in your LTSpice circuit you have used an NPN transistor. This will render it inoperable: -

You have also forgotten the emitter resistors for the output transistors. There may be other errors but these are enough to make you reconsider the simulation.

Addendum

Q3 is incorrect too.

Also, when I finally run this circuit, do You know how to rise the amplification of this circuit(?), for now it is like 30 V/V.

The mid-band AC gain is dictated by the ratio of R4 to R5 plus 1. For the values used, I estimate the mid-band gain to be 31.3. If you require more gain you could lower R5 or increase R4 but, either way, you may start to have problems with gain at the upper frequencies - you'll need to check this out and if you do have a problem it may be easier to apply op-amp gain before the input.