Re: tube question



Dan,
    Contact Bob at Eurotubes,  http://www.eurotubes.com
I think they're around $30 for a matched pair.  Good site to surf through and Bob is a
great guy to deal with.

Don D.
http://www.thebernadettes.com

Daniel Hein wrote:

> Don and everybody else that answered my question, thanks for the help.  Just
> wondering where's a good place to get the JJ power tubes you mentioned, and
> how much they cost?
>
> Thanks again,
> Dan
>
> >From: The Bernadettes <mdestefano@xxxxxxxx>
>
> >Daniel,
> >     Power tubes wear out faster.  Pre-amp tubes don't have to be changed
> >unless they go
> >noisy, short out, arc, or just sound plain lousy.  If you like the sound of
> >the amp, I'd
> >leave the pre-amp tubes alone.  Pre-amp tubes can last quite awhile,
> >especially if
> >they're the older US or Western European manufactured NOS tubes.
> >     Power tubes are another story.  If they do short out, they can
> >sometimes take other
> >components with them (such as the screen resistors).  Usually you'll have
> >some warning
> >such as visible arcing inside the tube, weak power, and weak frequency
> >response.  Age
> >has little do with wear, it's use.  Tubes will last forever if not used so
> >you can't
> >judge by 5 years.  If you used the amp regularly, (say gigging every
> >weekend, and
> >rehearsing once or twice a week) for 5 years, you're probably due for a
> >power tube
> >change.  If the amp hasn't seen much use in 5 years, then don't sweat it.
> >Also, the
> >type of tubes and type of amp has a lot to do with it.  Again US or WE NOS
> >tubes will
> >tend to outlast the newer Russian and Chinese made tubes, 6L6 GC tubes will
> >outlast 6L6
> >WGB or GB or 5881 tubes, especially in amps with higher plate voltages.
> >For instance,
> >my silverface Super Reverb, which has high plate voltages, went through a
> >set of NOS 6L6
> >WGB's in about 6 months, but I've had a pair of JJ 6L6 GC's in there now
> >for over a
> >year, still going strong.  The JJ's are rated to withstand much higher
> >plate voltages.
> >If you have a local amp tech with a good tube tester, pull the tubes and
> >have them
> >tested.
> >
> >Hope this helps some,
> >Don D.
> >
> >Daniel Hein wrote:
> >
> > > Hey folks,
> > > My guitar player mentioned something about changing my tubes every
> >coupla
> > > years.  I've had my amp for maybe 5 years, with the same tubes.  To my
> >ears
> > > it still sounds good, but maybe if I change the tubes it'd sound better?
> > > Does it depend on what tubes they are (who manfuactured them)?  I don't
> >know
> > > who made the tubes, the amp is a Sonny Jr. 2 and it's the stock set-up
> >if
> > > that helps.  Don't know if the pre-amps wear out faster than the power
> >tubes
> > > or what.  Any help would be appreciated.
> > >
> > > Thanks,
> > > Dan
> > >
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