[Hallicrafters] re: 6V6's - NOS or newly manufactured??

[Roger Halstead (K8RI)]

Now if you had hearing like mine (basically stone deaf above 8000 cycles,
but better than normal below about 500 and way above normal below 100)  you
don't have to worry about spending lots of money go get high fidelity.

Besides the ringing in my ears is louder than any thing I normally hear in
the higher frequencies.  Good thing I'm not one of those people bothered by
noise and it's louder than, or at least as loud as most conversation.  I'm
so used to it I only notice it when I stop to think about it.

Roger Halstead (K8RI, EN73 & ARRL Life Member)
N833R, World's Oldest Debonair (S# CD-2)
www.rogerhalstead.com


> The risk with a NOS, (new old stock) tube, is that it is old, even if it
is in
> the factory box and never so much as touched from the date of manufacture.
The
> seal around the tube pins can develop a tiny leak over time and the tube
will
> lose a portion of the vacuum and become gassy.
>
> I am a long time audio buff. It is more the design of the amplifier, or
audio
> circuit in a RX, that yields the warmth associated with a vacuum tube amp
than
> who made the tube in question. As far as longevity goes, the manufacturer
is a
> factor.
>
> Because I am totally blind and used to listening, 92% of what a sighted
person
> learns is through visual channels and audio is greatly ignored, I can tell
you
> truthfully that most of the high end tube amplifiers being sold today
sound no
> different than ones made forty years ago. In fact, many not as good! There
is a
> difference in audio between solid state and vacuum tubes, true enough.
However,
> only the purist or audio devotee, such as I am, are going to know the
> difference. The rest, well, imagination is a wonderful part of the human
mind.
>
> Duane W8DBF
>
>
> ----------
> From: Andy Bullington <abullington at comcast.net>
> To: hallicrafters at mailman.qth.net
> Subject: [Hallicrafters] re: 6V6's - NOS or newly manufactured??
> Date: Monday, January 26, 2004 11:34 AM
>
> Depends on the brand etc. I have had the new ones fail after a
comparitively
> short time. (6 months) I've never seen this happen with NOS 6V6s.  The
> general thinking in the audio community is that the newer 6V6s don't stand
> up quite as well and don't sound quite as good. and its a fact that some
> will not handle the same voltages as a good NOS tube. I doubt serioulsly
if
> you will notice a difference in the sound of, say, a new Electro Harmonix
> (Russian) 6V6 and an NOS RCA , Brimar or Phillips...
> but a Brimar will last a very long time.
>  But in a receiver I doubt you will be testing those voltage limits. If
you
> are running a pair be sure and get a matched pair...whether NOS or new.
> The prices of quality NOS 6V6s is considerably higher than Eastern
European
> or Chinese tubes.
>                  Andy W1AWB
>
>
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