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Tube match problems

Hi Everybody

I’m new here and would like to ask for your help. 

I got VTL power amp with 6l6 tubes. They were perfectly match. Unfortunatelly when I was recently moving, took out tubes and forgot to mark tubes against sockets. Now I’ve connected back whole my set up, most luckily tubes in wrong sockets, it doesn’t play as it was. I don’t have tools to check bias and it really difficult to find any place dealing with tube amps in my city. Any ideas to solve this issue, which makes me crazy :(((
mn
mn OP
13 posts
 
Thanks for response.

I’ve never done this, but sounds easy.
Hopfully will find right parameters for tubes and amp...

sholud I search for 6l6 Sylvania or with exact serial number of tubes. I mean are parameters same for all Sylvaniya 6l6?
fedie
61 posts
 
Find your vtl model name and find your bias output and set accordingly...can always call vtl. 
roberjerman
4,319 posts
 
Contact VTL tell them the model no. of your amp. Ask how to check and adjust the output tubes' bias (milliamps). You will only need a multimeter and a screwdriver to do this. Be sure to have a load (speakers) connected when doing this! Otherwise damage to the amp will happen!
lowrider57's avatar
lowrider57
5,417 posts
 
All 6L6's will have the same value for biasing. You don't need to check serial numbers.
But check your tubes to see if they are 6L6, 6L6G, or 6L6GB.
jetter
3,033 posts
 
Don't get shocked, be careful!
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