help! need to bias an uberschall.....

[BERNI]

hi evryone!

i recently got a uberschall rev.2, ( green bulb), and i noticed that had low volume, i owned several in the past, and they were louder than this.


i putted fresh jj tesla el34 tubes, but the issue is there again.

i wonder if this rev of uber has internal pot bias, cause i opened the amp and i couldnt find anything...

any suggestion?

best

 

[Nico]

Not to be an ass but you probqbly need to post ln Bogner forum

 

[Laura]

hi evryone!

i recently got a uberschall rev.2, ( green bulb), and i noticed that had low volume, i owned several in the past, and they were louder than this.


i putted fresh jj tesla el34 tubes, but the issue is there again.

i wonder if this rev of uber has internal pot bias, cause i opened the amp and i couldnt find anything...

any suggestion?

best

Yes it has a bias trim pot which is labeled "BIAS".

 

[BERNI]

thanks...
i know the bogner forum, but, nothing to do there.....

i will try to fix it.