Mic Kaczmarczik's TubeInformation - The Blue Guitar

with the numbers on top in a grey paint to simulate etching. The numbers are
>arranged thus:
>
> 7591
> A
> USA
If it's on the top of the tube, it's almost certainly
Sylvania/Philips ECG.
The only GE's I ever saw that were etched on the top were
those notorious compactrons (6K11, 6BK11, 6C10).
which you'll hardly see unless you have an Ampeg or a
really weird Fender, or an old TV set.
If they're solid letters, it's a Sylvania (Philips ECG, same factory)
if they're broken letters (look like a stencil), it's GE.
Ned Carlson, Triode Electronics, Chicago, IL http://www.triodeel.com
Open 12:30-8 PM CT, 12:30-5 PM CT Sat Closed Wed
ph:773-871-7459 fax 773-871-7938 "where da tubes are"
Email catalogs: email our CataBot: catalog@triodeel.com
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