Anyone know what company, if other than Dumont made Dumont tubes? What year
did they go out of production anyway?
How would you review Dumont audio tubes, such as 12ax7's, 6l6's, el83's-84's
ect..Did Dumont ever make 7025's??
thanks..

a person wrote:
Anyone know what company, if other than Dumont made Dumont tubes? What year
did they go out of production anyway?
How would you review Dumont audio tubes, such as 12ax7's, 6l6's, el83's-84's
ect..Did Dumont ever make 7025's??
thanks..



Check
http://www.pauls-roehren.de/roehren/...CodeListAB.pdf
to see if there are Philips factory codes on the base of the tube.

Philips was the owner of various brands like Mullard, Valvo, Dario,
Adzam, Sylvania.
Besides this, valves were sold OEM to other companies.
There were Dumont EL34's on Ebay that had a Philips factory code.

Andre

On Mon, 20 Feb 2006 16:10:54 GMT, a person wrote:

Anyone know what company, if other than Dumont made Dumont tubes? What year
did they go out of production anyway?
How would you review Dumont audio tubes, such as 12ax7's, 6l6's, el83's-84's
ect..Did Dumont ever make 7025's??
thanks..

AFAIK, the DuMont company itself (like Zenith) only made CRTs, and never
made recieving tubes. DuMont marketed relabelled tubes from numerous
sources.

--
Ned Carlson www.tubezone.net
South Side of Chicago,IL USA
2/21/2006 4:24:35 AM

And

Philips owned Sylvania? I know they do now, or the remains thereof. But
when the Philadelphia and upstate PA tube factories were still open?

Peter Wieck
Wyncote, PA

wrote:
And

Philips owned Sylvania? I know they do now, or the remains thereof. But
when the Philadelphia and upstate PA tube factories were still open?

Peter Wieck
Wyncote, PA


Yeah Peter,

Do you remember the famous sylvania replacement-series that came with
a 1" replacement-guide that had allmost every semiconductor in the
world listed?
Somewhere in the 80's it turned into the Philips-Sylvania book.
Besides, they bought all kind of semiconductors and re-stamped them
as they probably also did with the last valves they sold.

You might be right in suggesting that selling "philips" valves and
being owned by philips did not happen at the same time.

Andre