Do you have a shot of the inside? Just for interest of course
How have you supported the ABS?
Regards
M. Gregg
Do you have a shot of the inside? Just for interest of course
How have you supported the ABS?
Regards
M. Gregg
The schematic is freely available. Have you heard of a birds nest? Mine is more like a vultures nest! Yes I'll post a image. No support for the top. It doesn't appear to be sagging the plate is very thick.
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Here's my everyday amp:
It's a KT120 single ended ultralinear amplifier.
Input tubes are old British WW2, Cossor, 41MTL meshplate triodes.
PSU is a simple CLCLC.
Output transformers are James.
An externally hosted image should be here but it was not working when we last tested it.
It's a KT120 single ended ultralinear amplifier.
Input tubes are old British WW2, Cossor, 41MTL meshplate triodes.
PSU is a simple CLCLC.
Output transformers are James.
It is capacitor coupled. Russian PIO bypassed with Russian silver mica.
The row of Hammond iron is mostly chokes. There are 3 chokes showing on each mono with one down below. Also used separate transformers for everything. The B+ has one 5A torrid for +, another below for -. Way more than needed but I think contributes to very fast clean presentation. Separate toroids for every 2 6c33c filament. separate EIs for bias, small tube B+ and filaments.
Total of 8 chokes and 14 PT in the power supply. A bit of a lift! The heat isolation works very well. The long vent between the row of tubes and the row of chokes truncates the heat at that point. Metal around tubes acts like heat sink but you can hold your finger right on the metal behind the vent. Good chimney effect keeps everything cool.
Not measured but designed for 110w per side results in very tight detailed bass.
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Wow, I like the look of that top plate. As usual I dislike Edcor's blue but the rest looks top notch. BTW, I really LOVE my SE UL amp. It has the Life and Vitality of a teenager. Electrifying fast. The instruments jump at you. Really amazing.
Hi Steve,I very love that light green amp.Its make me think of BSA or Norton Motorcycle.I voted for top ten Single End for your amp.Can your share more detail please(circuit and how you made it),Thanks.
mhouston,first and only thing I can say is "Wow" You always made awesome item.Thanks for sharing and hope to see your next project.
I can't make out..how have you Earthed the transformer metal work?
I guess its under the tape
Looks good outside...
..I see what you mean about the nest..Regards
M. Gregg
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Thanks for the vote of confidence
Here is the schematic for the audio circuit:
An externally hosted image should be here but it was not working when we last tested it.
And here is a pic of the inside:
An externally hosted image should be here but it was not working when we last tested it.
It was made on a large aluminium guitar amp chassis, etch primed and sprayed with an automobile paint.
Many thanks Steve for schematic.After I saw inside wiring(clean and clear) now its go up to top five Single End I ever seen.Look like a Mashall Guitar amp or somthing like that. I guess you have more than hundred ton of experiance of tube amp.I have worked with SS amp for 15 years,but valve world I'm still like a kid.I only made 3 tube line amp and buffer in last 8 year.Now I have Silvertone console single end reciever( 12ax7+el 84) need to fixing hum.I tried hard so many way (re-cap,star ground,re-wiring,but not rolling tube yet) Its working fine and sound very pleasure for my ear.Anyway hope to see your next project and learning from you.Have a good night.Thanks for the vote of confidence
Here is the schematic for the audio circuit:
An externally hosted image should be here but it was not working when we last tested it.
And here is a pic of the inside:
An externally hosted image should be here but it was not working when we last tested it.
It was made on a large aluminium guitar amp chassis, etch primed and sprayed with an automobile paint.
Yes the power tranni is earthed but at this point nothing else. The power tranni is earth to the mains earth, once more nothing else connects to mains earth.I can't make out..how have you Earthed the transformer metal work?
I guess its under the tape
Looks good outside...
Regards
M. Gregg
I don't like screw heads poking through the top plate. Tape works for me.
Sticky feet..
Amazon.com: Startech HC102 Self Adhesive Cable Tie Mounts (Pack of 100): Electronics
Regards
M. Gregg
We have a Canadian folk hero of television show fame who is a DIY'er of a different class altogether. His name is Red Green and one of his favorite solutions to any problem is Duct Tape.
Ol' Red would be proud of that amp!If you don't wanna use screws, I like those self adhesive ty-wrap brackets.