Hi everyone
Has anyone played with the DEH610?
https://patric-sokoll.de/Röhrenmuseum/Datenbank/PDF/Datenblatt DEL 610-1 Marconi.pdf
https://www.radiomuseum.org/tubes/tube_deh610.html
may sound good?
Has anyone played with the DEH610?
https://patric-sokoll.de/Röhrenmuseum/Datenbank/PDF/Datenblatt DEL 610-1 Marconi.pdf
https://www.radiomuseum.org/tubes/tube_deh610.html
may sound good?
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Wouldn't these be museum tubes? Exquisite examples of the early history of vacuum tubes, but are they practical from a DiyAudio perspective?
Are these the types of tubes that you experiment with? What are your thoughts on sourcing and using tubes of this vintage (say, pre-1930)?
One of the things that amazes me about the development of the more common tubes discussed here, is that from about 1935 they had more or less defined the characteristics for the main candidates in use in audio all the way up to the 1950's, and most of the developments in that time were just optimisations and for cost saving. The speed of change in that first decade was incredible.
Are these the types of tubes that you experiment with? What are your thoughts on sourcing and using tubes of this vintage (say, pre-1930)?
One of the things that amazes me about the development of the more common tubes discussed here, is that from about 1935 they had more or less defined the characteristics for the main candidates in use in audio all the way up to the 1950's, and most of the developments in that time were just optimisations and for cost saving. The speed of change in that first decade was incredible.
I'm only really interested in pre 1935 tubes.
Sure there are some issues with pre 1935 tubes, however there are serious issues with post 1935 tubes (e.g. low fidelity / sounds like ****) , as you would expect after cost cutting.
IMO DIY should embrace non mainstream, as that's where greatness resides.
Sure there are some issues with pre 1935 tubes, however there are serious issues with post 1935 tubes (e.g. low fidelity / sounds like ****) , as you would expect after cost cutting.
IMO DIY should embrace non mainstream, as that's where greatness resides.
If Metal Oxides and Silicon make stuff practical and inspiring for the DIYer, and the DIYer can live with any consequences, so be it.
My (tube) amp has some (carefully chosen ) silicon , Mosfets, and a CCS , as well as (1920's) tubes, chokes, CC resistors, Russian caps etc, and I'm happy. And it amazes me the combination of tech that spans almost a century, can work in one amp so well ( subjectively)
Peace ✌
My (tube) amp has some (carefully chosen ) silicon , Mosfets, and a CCS , as well as (1920's) tubes, chokes, CC resistors, Russian caps etc, and I'm happy. And it amazes me the combination of tech that spans almost a century, can work in one amp so well ( subjectively)
Peace ✌
Good stuff. Not familiar with this type but it wouldn't suprise me if it was microphonic; I've avoided these British battery types due to reading about them being generally quite microphonic. I've read good stuff about the German Aa which is high Mu, but some of them were made during a dark period in history at the Valvo factory.
Did you see this thread, with the interesting video from the Norwegian guy?
Simple Tube Tester
He has an example of a WW2 tube that has limited documentation and dials in the optimum settings for the operating characteristics, and then listens to the sound. That would seem to be the only true way to test these pieces from the very early days, before mechanisation ensured some degree of conformity.
Hi Gupsta,
I was just rereading the DEH610 /DEL610 datasheet, and noted it says "... highly efficient dull emitter type..."
Maybe that's the DE in the DEH610 (H high gain, L low gain) , and Dull Emitter = oxide/coated emitter (not as bright as the TT types)
I was just rereading the DEH610 /DEL610 datasheet, and noted it says "... highly efficient dull emitter type..."
Maybe that's the DE in the DEH610 (H high gain, L low gain) , and Dull Emitter = oxide/coated emitter (not as bright as the TT types)