No-one knows?

I have started to try and figure some things out using these two calculators:

Gain and loss - damping and amplification in dB voltage conversioncalculation amplification amplifier electronics - field parameter - Eberhard Sengpiel sengpielaudio

www.sengpielaudio.com

Watts (W) / volts (V) / amps (A) / ohms (Ω) calculator.

www.rapidtables.com

So if we take a 1 volt output from the pre-amp, as a starter, and apply it to a power amp with 29db of gain, that power amp will multiply that volt by a factor of 28.183829

The next calculator uses Resistance in ohms (speaker) and the voltage that we got from the previous calculator, plus current of 3.52297862 amps (what is this, is it electric power?) to output power in watts.

If I am correct, then so far we have this:

1 volt into a power amp with a gain of 26db, and speakers of 8 ohms = power output of 49 watts

1 volt into a power amp with a gain of 29db, and speakers of 8 ohms = power output of 99 watts

1 volt into a power amp with a gain of 31db, and speakers of 8 ohms = power output of 157 watts

That sounds like it might be correct.

Let's try the same with 1.2 volts:

1.2 volts into a power amp with a gain of 26db, and speakers of 8 ohms = power output of 71 watts

1.2 volts into a power amp with a gain of 29db, and speakers of 8 ohms = power output of 143 watts

1.2 volts into a power amp with a gain of 31db, and speakers of 8 ohms = power output of 226 watts

Interesting, so where does input sensitivity fit in, and also impedance?