EC8010 said:Gentlemen, if you are wondering why this thread has suddenly changed its name, it was a mistake on my part. Normal service will be resumed as soon as possible. My apologies.
I changed the name, but can't remember what the exact title was ... senility you know... it is also sticky again.
dave
my disign
this not mine exactly, but my partners.
500VA power input
2X25W output only
A class. sound good, but need not compressed drivers
http://www.artmaydan.org.ua/valve_amplifier.html
this not mine exactly, but my partners.
500VA power input
2X25W output only
A class. sound good, but need not compressed drivers
http://www.artmaydan.org.ua/valve_amplifier.html
Attachments
no problem's yet ran it all saturday. just a small grounding problem i need to work out. i went to turn on the pre with the amp at the same time and got a little jolt nothing major but i dont
think the wife would like it
making some changes today
yes it does sound great for it's size.
think the wife would like it
making some changes today
yes it does sound great for it's size.
Finished my phono stage !
Here's my latest effort. Just a 12AX7 RCA type phono preamp with passive RIAA. Ok, so there are probably better and neater ways of getting regulated HT, but glow tubes look so cool !
Went for the two box layout to minimise noise and hum. Sounds pretty good to my ears so far.
http://www.mthain.dsl.pipex.com/tube/images/phono.jpg
Here's my latest effort. Just a 12AX7 RCA type phono preamp with passive RIAA. Ok, so there are probably better and neater ways of getting regulated HT, but glow tubes look so cool !
Went for the two box layout to minimise noise and hum. Sounds pretty good to my ears so far.
http://www.mthain.dsl.pipex.com/tube/images/phono.jpg
The taller tube is indeed an 0A3 but the other is a bit more unusual. It's a G120/1B or CV438 (see http://www.tubecollector.org/cv438.htm). The version I have is a bit taller but it's in a deep socket which was originally for a high voltage rectifier - I'm a bit short of B4 bases. Definitely one of the nicest looking glow tubes I've seen.
If you've just worked out that 0A3 and G120 = 130v and are wondering how the 12AX7's are working at that.. Well, I also have an 0A2 tucked behind the 0A3 giving 280v in total.
If you've just worked out that 0A3 and G120 = 130v and are wondering how the 12AX7's are working at that.. Well, I also have an 0A2 tucked behind the 0A3 giving 280v in total.
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