The Amp Garage

I stay on the cold side for the moment and the TAD el34 seem to hold well ...

We will see

Received my EL34 from TAD !
Installed it - biased on the low side with plates @ 510 !

Everything is ok!

How do you guys bias these amps ?

Cheers

JUJU

ho well -

got my tube today - not matched to the rest even though i left a note ...

Hey !

I already ordered a replacement EL34 from TAD !
I had them lying around for 2 years so maybe one of them got hit ...

Anyway - will let you know !

The plate voltages were around 520v ...

Cheers ! Thank you !

Ok ! you guys were right ! bad power tube !!! swapped the two "good" power tubes with the other two "remaining" tubes. after a few seconds, i heard a crackling noise / hiss ... burnt another screen grid resistor. I replaced the dead screen grid resistor, put back the good pair and everything went ba...

ok -
thank you

yes Martin,

only using 2 tubes out of 4 works ( leaving the faulty socket / resistor unused ) works.
i will try to swap power tubes to make sure one of the 2 other " brand new TAD" is faulty.

thank you.

+1 ON GREENLEE

hey ! thank you for your advice pdf64 ! i do have a bulb limiter but i am not starting a new build or running it for the first time - unproven stuff ???... i was changing power tubes in an amp that worked ... i do have a light bulb limiter, i am not resistant to using it ... i just don't see your po...

Hi guys ! first of all, i hope all of you are safe during this global crisis. i took time to change power tubes in my vintage OR120M. ( EL34M - str - TAD ) So, i removed the old ones, put my probes to check bias, put new tubes in, turn it on, and within a minute, one of the 1K/5W fails. Changed the ...

huh, this one too, he will assemble ceriatones ...

http://vintageamps.free.fr/

check out VALVE HOUSE MUSIC

http://www.valveshouse.fr/

they're in paris near pigalle

Thanks to my iPad's intuitive writing

Thank you guys !

Meant Bright switch, excuse my ignorance but what LTP PI means?