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Valve Base
John Hill:
Darren, I believe you went to the same wiring school I did!
One day in class the flight sergeant handed each of us a box of bits and a circuit diagram to build a triode audio amp. It was not long before he was bawling me out for wasting time and soon after that he was holding up my efforts as an example to the class how not to do things! I damn near had to sit in the corner for a hour while the others finished up.
Then we had the tests, of the 24 in the class mine was the only one that worked! :lol:
Darren:
--- Quote from: Brass_Machine on May 19, 2009, 03:34:35 PM ---Hey Darren,
How about writing a post on setting us audio newbs on the right path of build say a small valve amp?
Eric
--- End quote ---
I've got an amp that uses two American TV valves, very plentiful and cheap.
Even better is that it is one of the best sounding amps I have ever built and has been copied all over the world.
My mate designed it for my first valve amp build and I was the first to ever build it (my mate knew it would work so didn't bother to build it himself till much later)
Neither of us got any credit, not even a mention. Together we have built some weird and exotic amps over the years and that where often copied.
Eric, let me dig it out sometime and go through the motions. It's a very simple circuit, can be built in a day or so.
Look up 6EM7 valve amplifier and you will find :thumbup:
Darren:
--- Quote from: John Hill on May 19, 2009, 05:18:05 PM ---Darren, I believe you went to the same wiring school I did!
One day in class the flight sergeant handed each of us a box of bits and a circuit diagram to build a triode audio amp. It was not long before he was bawling me out for wasting time and soon after that he was holding up my efforts as an example to the class how not to do things! I damn near had to sit in the corner for a hour while the others finished up.
Then we had the tests, of the 24 in the class mine was the only one that worked! :lol:
--- End quote ---
John, valve amp wiring should be like a birds nest, my PX4 amp is way too neat..... :doh:
Darren:
--- Quote from: Bernd on May 19, 2009, 04:40:34 PM ---Very impressive Darren.
I remember hearing (no pun intended) about these types of amps putting out better music than the silicone jobs of today.
Bernd
--- End quote ---
There is no comparison between valves and silicon amplifiers.....silicon is harsh and lifeless. There is no way around it no matter how much money or design you throw at it.
When you hear your first ever female vocals on a valve amp you get a very strange feeling and are compelled to look around to see who is there. It's hard to describe, but most people even if they are not into music get quite confused for a while.
That 6EM7 amp I mentioned is famous for it.
Darren:
--- Quote from: spuddevans on May 19, 2009, 02:57:41 PM ---
One seriously impressed Tim.
--- End quote ---
Aww shucks, thanks Tim...
Oh I'm gonna have to build one as a project arn't I
I'd really given up, I've built so many and have found one that made me stop.
Most were just built on a piece of wood, only about three or four were ever cased.
Build it, listen for a while, strip half of it down and try another valve.....
Over and over and over and over and over and over and over and over and over and over and over and over and over
I seriously couldn't tell you how many...
Have a look for we4212 valve or tube as they like to call them, might be a picture out there somewhere?
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