Tube 6N3 Preamp TDA7294 Power Amplifier Kit DIY 80W+80W
 

I have just finnished this kit from E-bay:

Tube 6N3 Preamp TDA7294 Power Amplifier Kit DIY 80W+80W | eBay

it has one 24v-0-24v input and one ac 9-12v input.. do i need two transformers or could i only use the 24v input?

If it says a 24v-0v-24v AND 9-12v then that is what is needs , it doesn"t say 24v-0v-24v and 24v ........

The 24v-0v-24v is used for the Poweramp and the Plate of the Tube , the 9v-12v is used for the heaters which is regulated to 6v with a lm7806 ....... if you use 24v you will fry the regulator .......

Get a transformer with an extra 9v-12v winding or use a seperate small transformer or even an AC wallmart ......

ok.. thanks!

are you have circuit ore assembly manual of this board?
i bought one & package without them

yes, got it in the package.. i managed to kill my amp chips with the wrong voltage.. but new ones are soon here... let me know if you need the schematics..

i am very nead )
you kill amp chips with the wrong voltage( +- or Vmax)?

if you can to email plz
han6man & gmail.com

vmax killed it.. there is no +/- since it is ac..

Schematics for hybrid amplifiers
 

Hi simenms!
Is the schematic (circuit), you can view this hybrid amplifier?
thank you