Where are you right now? Maybe I send you my 7 boxes with unfinished tube projects and humbly ask you to finish them ...My new project pure tube SE EL11 Telefunken /pseudo PP - maybe/, no saturation, small OTs, with amazing sound. Rec.- 5Y3, chock Hammond, preamp EBF11, Catod caps Black Gate, interstage caps Russian K73.
Actually I am in Chicago and will be back in Sweden by the end of next week. I did, before leaving, two weeks ago, dig up my Luxman clone and fond NINE 50CA10 tubes to go with it. The chassis is ready drilled and milled, I bring PSU caps back from USA and hopefully all components I purchased are still left.
Im in Baltimore MD for permanent.....I hope I will be in Chicago in Christmas...../You can send me Your stuff for finishing/Where are you right now? Maybe I send you my 7 boxes with unfinished tube projects and humbly ask you to finish them ...
Actually I am in Chicago and will be back in Sweden by the end of next week. I did, before leaving, two weeks ago, dig up my Luxman clone and fond NINE 50CA10 tubes to go with it. The chassis is ready drilled and milled, I bring PSU caps back from USA and hopefully all components I purchased are still left.
814 PP, only one channel built so music in mono with one 15" FR.
These tubes, 814-"A" were made for a french military contract, probably Philips France factory.
These tubes, 814-"A" were made for a french military contract, probably Philips France factory.
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in series (on secondary) but with interleaving ...
And it works well?
is it well matched? (at least computationally)
Works better than a real OPT IMHO. Especially if you're looking for low Ra-a (My monoblocs are about 1k Ra-a:6R with peak current of almost 1A on the primary).
814 PP, only one channel built so music in mono with one 15" FR.
These tubes, 814-"A" were made for a french military contract, probably Philips France factory.
Interesting lighting on the tube heaters/filaments. Is that a camera artifact or do they glow that white? In any case, nice amp!
Edit: And nice cat!
@carlp
Thoriated tungsten heaters glow that way. My 811a tubes glow like that.
Ah, that makes sense, thanks. And it's a DHP? (Directly heated pentode?) Not sure I've ever encountered such a beast. Anyway, that's one heck of a tube, though as you say, also a heck of a lot of power consumption! How did it sound?
Yes, a DHP but used in triode with only 400V B+ (fixed bias).
Impressive because big bottles and tungsten filaments but probably not better than a PP of KT66 triode connected in these conditions
Triode curves here:
814 SE A2 Amplifier – Bartola(R) Valves
Impressive because big bottles and tungsten filaments but probably not better than a PP of KT66 triode connected in these conditions
Triode curves here:
814 SE A2 Amplifier – Bartola(R) Valves
Oops.
They had a good 5 year run at 70c though... I bought these at the local electronic surplus/junk store when I was just starting to DIY tube stuff.
When it blew, it took out an 8R 5W resistor, a diode, and a 5A fuse Apparently, the force of the blast sent it into the chassis and dumped the power supply to ground.
They had a good 5 year run at 70c though... I bought these at the local electronic surplus/junk store when I was just starting to DIY tube stuff.
When it blew, it took out an 8R 5W resistor, a diode, and a 5A fuse Apparently, the force of the blast sent it into the chassis and dumped the power supply to ground.
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Yes, a DHP but used in triode with only 400V B+ (fixed bias).
Impressive because big bottles and tungsten filaments but probably not better than a PP of KT66 triode connected in these conditions
Triode curves here:
814 SE A2 Amplifier – Bartola(R) Valves
Thx. I see Ale was using a 46 to drive it. What did you use? Or maybe at this point I should ask if you posted a thread about it so I don't take this too far afield.
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