How much power can I get with this transfomer for my amplifier? It's rated 28 0 28 1.3A

[Eminentia]

Guys

I have this transfomer ,, I want to use it with my transistor amplifier c5198 A1941 or c5200 a1943

My transfomer is 28 0 28 1.3A =72.8VA

My question is ..is that 72 watts or VA

If it's VA then we have to multiply it by 0.8 and then we get 57.6w which is usable power

Then class AB efficiency is only 50 to 70%

Let's assume 65% then we get 37w

Am I right with the calculation?

Then wat if I'll be using 24 0 24 5A transfoma how much power can I get with one channel (mono) or stereo or stereo and one extra channel for bass pls help

 

[stv]

What speaker impedance?

 

[Eminentia]

4ohms

 

[stv]

The limit is 1.3 A max current, very simplified:

(1.3 A)^2 * 4 Ohm = 6.76 W

 

[lineup]

1.3A is very little. Especially for 4 Ohm.
It does not matter we have 28-0-28 Volt.