[R-390] More Ballast Tube Noise

[Barry Hauser]

Roger wrote:
> BTW, I did not say or suggest I was intending or wanting to replace a 7
with
> a 4 in an R390. I was just curious on the difference between these tubes.
I
> just happened to come across all 3 of these tubes in a big tube box at a
> swap fest last weekend and I grabbed all 3 for .25 cents a piece.

Actually, Roger, I don't think we were reacting to your question, so much as
the guy who said he actually _did_ sub in a 3TF4 -- which glowed a bit
brighter, etc.  These things have a way of evolving and taking on a life of
their own.

Suffice to say, ballast tube lore 'n legend will never die.

25 cents a piece is a good price -- if only just for looking at.  Now, all
you needed was to find a couple dozen good 1L6's in that big tube box -- or
maybe some audiophile specials.

Barry