Difference in SIZE of valves

Pierre

Stratologist
A friend of mine today gave me 4 JJ6V6s he had as spares (doesn't need 6V6s) as well as 2 EL84s.

He had 2 other 6V6s which were WAY, WAY smaller than the JJs.

Is there a general consensus on the size/power ratio for instance?
 
Re: Difference in SIZE of valves

Different designs, and manufactuing parts, really. Sometimes this acan "accidentally" make for a nicer vaalve. But no, to be spec-ed a 6v6, it has to adhere to , er, the specs. Larger plates, spiraled filaments are innovations within the spec, to increase performance/noise floor/gain etc. But a pocket rocket is just as likely to be a good tube as a big valve.
 
Re: Difference in SIZE of valves

Oh yeah. I wouldn't think any would be better. But the theory behind all this intrigues me. Thanks!
 
Re: Difference in SIZE of valves

the November 2006 issue of Guitar Player (with John Frusciante on it) had a thing on power tubes. There's a start. Also the Groove Tubes website has info.
 
Re: Difference in SIZE of valves

I got it. I taught me nothing I didn't already know by then. I'll check out the GT website though thanks.
 
Re: Difference in SIZE of valves

I smell a fix for an AOR 30 coming. Tell me how the JJ's workout in the AOR Pierre. I think they just may do the trick. My fingers are crossed. ;)
 
Re: Difference in SIZE of valves

Nah it already has the same 6V6s :D I just got them as spares.
I wouldn't know the difference man... I barely ever use the amp, I still have the older valves but they were as old as the amp, close to 18 years old. Only been changed once, but put back in later. They were of the smaller size. I didn't compare the tone nor cared/wanted to. I just learnt how to bias, popped the new ones in, biased, didn't kill msyelf and that was it :D
 
Re: Difference in SIZE of valves

Nah it already has the same 6V6s :D I just got them as spares.
I wouldn't know the difference man... I barely ever use the amp, I still have the older valves but they were as old as the amp, close to 18 years old. Only been changed once, but put back in later. They were of the smaller size. I didn't compare the tone nor cared/wanted to. I just learnt how to bias, popped the new ones in, biased, didn't kill msyelf and that was it :D


Ah..gotcha.

Are you 100% sure the small tubes are 6V6's Pierre?
 
Re: Difference in SIZE of valves

Yep. Was written on them and the specs of the amp say 6V6s. It's just that the JJs are huge and some are tiny.
 
Re: Difference in SIZE of valves

All the 6v6 tubes I've seen are right around this size... these are NOS Sylvanias- with a Fender 5y3 rectifier tube on the right.

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