Hello,
I was origionaly going to biuld a stereo SE el509 amp, but decided that i would like to build a PP amp instead. I can't seem to find ny el509 pp schematics. Any one know where i can find one? I dont want anything toooo complicated, i dont need ballanced inputs, and dont want OTL schematics, as i only have 4 of these tubes.
--Tom
I was origionaly going to biuld a stereo SE el509 amp, but decided that i would like to build a PP amp instead. I can't seem to find ny el509 pp schematics. Any one know where i can find one? I dont want anything toooo complicated, i dont need ballanced inputs, and dont want OTL schematics, as i only have 4 of these tubes.
--Tom
I searched around, and I can only seem to find SE
If I get bored enough I might draw up a AB scheme after school 😉
If I get bored enough I might draw up a AB scheme after school 😉
I'm not sure a circuit for the KT90 will work well with the EL519 or vice versa as they are not similar tubes according to EveAnna Manley.dhaen said:
http://db.audioasylum.com/cgi/m.pl?forum=tubes&n=101679&highlight=kt90+vanimal+manley&r=&session=
Just FYI
I'd like to try some KT90s one day. They have an excellent reputation and are $US140/matched quad
JohnR said:
Dont mind a 700v supply at all, i used a 600v supply in my EL509 based plasma tweeters. If someone could point me to a link to get this schematic, or could send me a scan of it it would be most appreciated
--Tom
JUST BACK AND ALREADY MAKIN'TROUBLE
Hi guys,
John,Brett...all,
The KT90 IS in fact a modified EL509.
Don't let the marketing division from other companies make you think it was made for them....bla,bla,bla....🙁
It simply is not true.
The problem at the time was the reliablity of the Chinese KT88 (or lack thereoff).
This brought a group of major vendors to approach the EI factory to bring a better tube on the market.
If you know that the minimum production run for an obsolete tube to be remanufactured or a new type introduced is 10.000 pieces/year than you also understand that no manufacturer of audio gear is going to put that kind of cash into it.
Although quite a lot of these tubes were used by said manufacturer,they certainly did not "invent" it.
KT SERIES
MORE OF IT
Sorry Brett san,😉
Hi guys,
John,Brett...all,
The KT90 IS in fact a modified EL509.
Don't let the marketing division from other companies make you think it was made for them....bla,bla,bla....🙁
It simply is not true.
The problem at the time was the reliablity of the Chinese KT88 (or lack thereoff).
This brought a group of major vendors to approach the EI factory to bring a better tube on the market.
If you know that the minimum production run for an obsolete tube to be remanufactured or a new type introduced is 10.000 pieces/year than you also understand that no manufacturer of audio gear is going to put that kind of cash into it.
Although quite a lot of these tubes were used by said manufacturer,they certainly did not "invent" it.
KT SERIES
MORE OF IT
Sorry Brett san,😉
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