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Magic eyes are nice VU meters, but they need to be replaced quite frequently. And after replacement of tubes such nice looking VU meter have to be re-calibrated, otherwise measurements are not precise. One of my prototypes used them to check bias of output tubes as well, but I gave up the idea, since output tubes (GU-50 at least) live much longer.
Just recently dumped all my Rotel gear and jumped on the tube bandwagon. I went entry level with the Miniwatt N3 but I love it. Put a NOS RCA 12ax7 in it along with some TAD EL84 tubes and it sounds great!
An externally hosted image should be here but it was not working when we last tested it.
Well it's certainly not a DIY amp, but I did recap the business end of it yesterday after it sat for two years dead in the water. It's my brother's amp, but it's probably going to end up being mine permanently until I buy or build something else that's better. All I did was replace the PS/filter caps as they were completely shot. As for the coupling/bypass caps, they are still in use and sound great! Plus I have been told that those old Sangamo Type 33 caps are highly regarded. So if they ain't broke, don't fix 'em. 
All pics taken with iPhone4...
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All pics taken with iPhone4...
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Toroidal Transformer Cover
I've searched the rest of the forum including other threads asking the same question and can't find any information about where to source the round cylindrical enclosures for a toroidal transformer. I know that these are called "deep drawn enclosures" and all the manufacturers that I've contacted are accustomed to huge quantity orders and want a king's ransom for one or two units. Where are people locating these at a reasonable cost? I'm located in the U.S. Thanks.
I've searched the rest of the forum including other threads asking the same question and can't find any information about where to source the round cylindrical enclosures for a toroidal transformer. I know that these are called "deep drawn enclosures" and all the manufacturers that I've contacted are accustomed to huge quantity orders and want a king's ransom for one or two units. Where are people locating these at a reasonable cost? I'm located in the U.S. Thanks.
Antekinc has some. Might want to inquire with them. I thought they cost around $20-$30 a piece though.
Pictures of my first home made electronics project:
Williamson type amplifier with 807, 6F8G, and 866A. The odd duck is a delay relay.
Guts:
Power supply in a separate partition.
An externally hosted image should be here but it was not working when we last tested it.
Williamson type amplifier with 807, 6F8G, and 866A. The odd duck is a delay relay.
An externally hosted image should be here but it was not working when we last tested it.
Guts:
An externally hosted image should be here but it was not working when we last tested it.
Power supply in a separate partition.
An externally hosted image should be here but it was not working when we last tested it.
One of the very best I have ever seen...!
I've thought a lot about how to keep the topside free of screwheads or rivets- you've succeeded!
Underneath is VERY complicated- wonder if you drew it all out with a 3D drafting package or just how you arrived at such a wonderful layout that seems to "just work"?
Excellence like this doesn't just happen- congratulations on a very well-planned and well-crafted design!
Happy with the performance? -Starting with a Williamson-type design, it's no doubt great.
Curious about some of the design obstacles you encountered and how you overcame them-.
Congratulations on the excellent work!
I've thought a lot about how to keep the topside free of screwheads or rivets- you've succeeded!
Underneath is VERY complicated- wonder if you drew it all out with a 3D drafting package or just how you arrived at such a wonderful layout that seems to "just work"?
Excellence like this doesn't just happen- congratulations on a very well-planned and well-crafted design!
Happy with the performance? -Starting with a Williamson-type design, it's no doubt great.
Curious about some of the design obstacles you encountered and how you overcame them-.
Congratulations on the excellent work!
This is superb. The underside looks as good as the top. Beautiful
I agree. Jon, How did yo do this? It is simply superb. "Homemade" electronics are not supposed to look this good!