L20 V8
 

The new version I test it will is the top level of the power amplifier simulation power amplifier.

It USES four to power tube. Positive, the reverse side.

Tests used only 2 to transistor output.

It will be a perfect power amplifier.
:whip:

Please tell us more.

it is about 250W 8R (+ -70V）
Four double transistor of the power output. Each circuit board.

Each level of all use CFP.

Can you post a circuit diagram, please?

Please showe schematic and pcb layout.
Regards.

I'm interested also to see a schematic and PCB if possible.

Regards!

The new board arrived.
It will give the maximum brilliance. All of the power amplifier


Its high frequency sound like the ocl amplifier as 300 B.

With great power 250 W 8 R output.

Its temperature is very low.

The boards look nice.

That is about all I can say.

Interesting! Can't see a thermal sensor on the heatsink.
You say temperatures are very low - how did you bias the outputs?
And again can we see a schematic please?

ljm_ljm,

How many versions of the L20 are there? I saw a L20, V7, V9 and others on ebay

Which one is better?

And why?

Thanks.