I have a Dynaco MKIII amplifier that is in fairly good condition. There are problems though, it has no psu cap, a bad psu choke, and only one OT tube. Does anybody have some ideas where I can get a new cap, choke, and pair of tubes for moderately cheap? I'm willing to pay some decent money if I can find some nice tubes. I really like the old genalex KT88's.
Any ideas on good substitute tubes instead? Otherwise, everything is there and in good condition, I have cleaned and re-wired the amplifier completely so everything is ready to go with these new parts.
Any help greatly appreciated!
-- Duo
Any ideas on good substitute tubes instead? Otherwise, everything is there and in good condition, I have cleaned and re-wired the amplifier completely so everything is ready to go with these new parts.
Any help greatly appreciated!
-- Duo
Hi,
there aren't any suitable caps that wil fit in the can. The original is not quite suitable either, as the rectifier usually conducts first and the B+ goes through the roof.
Triode Electronics sells a circuit board cap substitute. It puts 400 volt capable caps in series for 800 volt rating, which will do OK even for SS diodes, but the screen rating of th power tubes is probably higher than should be run.
Keep the 5AR4, put in the SDS cap board and look at their power tub selection. KT88 or 6550 should do you fine.
They sell replacement chokes too.
regards,
Douglas
there aren't any suitable caps that wil fit in the can. The original is not quite suitable either, as the rectifier usually conducts first and the B+ goes through the roof.
Triode Electronics sells a circuit board cap substitute. It puts 400 volt capable caps in series for 800 volt rating, which will do OK even for SS diodes, but the screen rating of th power tubes is probably higher than should be run.
Keep the 5AR4, put in the SDS cap board and look at their power tub selection. KT88 or 6550 should do you fine.
They sell replacement chokes too.
regards,
Douglas
This guy here in Sweden is selling a replacement quad-cap for the Dynaco Mk III. I don´t know if he ships abroad though, by you could always send him an email and ask for more info.
http://www.svalander.se/shoppen/mk3lyt.htm
The cap is custom made for him by Rifa. He sold these caps 10 years ago so he knows that this replacement work very well in the Mk III since owners still use those caps sold then with great results (a translation of some of the text).
/Erik
http://www.svalander.se/shoppen/mk3lyt.htm
The cap is custom made for him by Rifa. He sold these caps 10 years ago so he knows that this replacement work very well in the Mk III since owners still use those caps sold then with great results (a translation of some of the text).
An externally hosted image should be here but it was not working when we last tested it.
/Erik
Nice looking cap. How hard would it be to mount that into the dynaco case? I don't want to have to do any modding of the chassis really because I have no tools for that. Anyway, I'm willing to try almost anything that works well, sounds good, and looks fairly close to original...
Keep those suggestions coming though!
Keep those suggestions coming though!
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