"Jimmy" wrote in message
. com...

"Shiva" wrote in message
...

"George R. Gonzalez" wrote in message
news:hYTPa.43358$N7.5224@sccrnsc03...
I seem to have stirred up a lot of controversy here. Let me summarize
the
responses:


(A) You're right in adding the "missing" snubbers, missing fuses,
missing
bias controls, missing bias filters, missing bias test points, missing
bias
set points, especially since the amp
is acting up, even after replacing capacitors, looking it over...
etc.

(B) This Bogen amplifier is a part of our honorable tube heritage, the
ancient designers never made any design compromises, you should be
flogged
for even hinting of any possibility of cutting-corners by the
engineers,
or
suggesting
that the amplifier could be improved with a few modern components and
techniques.

(C) Bogen made high-quality stuff that lasted forever.

(D) Bogen made some stuff that was marginal, that blew tubes a lot.

---

In other words, all over the spectrum, and a lot more heat than
illumination.

I'll readily concede that all of the above may be true, although not
all
for
the same
amplifier model.

But as my viewpoint is mainly an engineering one, I see this more as
a challenge to tame, not as a historical artifact that should be
preserved
and worshiped as-is.

You all, are of course are entitiled to differ and to treat your
amplifiers
as you see fit.



Regards,


George



Occasionally one of these amps used to come into my shop with the output
tubes crispy fried. Usually this waas because the grid coupling caps were
shorted. replace these with 600 volt units. Also check other associated
componets for "doneness". Also be prepared to lay out much bucks for
replacement tubes. I wouldnt think an engineer would have much trouble
replacing these with something a little more economical, 6550's should be
a
good choice I think.



Have 4 used ones - came out of a working amp, look like crap, but all worked
& the amp pulled rated power. Offers?