Search found 7 matches

by leakstereo20
Sun Nov 16, 2014 4:08 pm
Forum: Amplifiers
Topic: CJ MV75 "update circuit drawing"
Replies: 9
Views: 4199

Re: CJ MV75 "update circuit drawing"

I bought an MV-75 as a kid. It was my first "real" piece of audio gear, and C-J was a new, fledgling company. An upstart. And doing TUBES! I remember the MV-75 was all the rage. I still have that amplifier, though I had it updated to an A-1 by the factory, then took a little further by it...
by leakstereo20
Sat Oct 27, 2012 4:17 pm
Forum: Amplifiers
Topic: CJ MV75 "update circuit drawing"
Replies: 9
Views: 4199

Re: CJ MV75 "update circuit drawing"

If you start then choose the well known Conrad Johnson MV75 circuit.. it will work...not my update drawing, I have checked the circuit on a test board and there are some circuit mistakes. I shall come back with some changes. best regards Kim There are one wrong connection between R23 and R24 on the...
by leakstereo20
Fri Oct 26, 2012 3:01 pm
Forum: Amplifiers
Topic: CJ MV75 "update circuit drawing"
Replies: 9
Views: 4199

Re: CJ MV75 "update circuit drawing"

Do you have a rough idea of how much all the parts cost? It's hard to justify building a new amp when I have the CJ Evolution 2000, this would be more of a "fun project" than anything else. An estimated price would be: http://store.triodestore.com/mq782.html 107,95$ for a powertransformer...
by leakstereo20
Thu Oct 25, 2012 1:19 pm
Forum: Amplifiers
Topic: CJ MV75 "update circuit drawing"
Replies: 9
Views: 4199

Re: CJ MV75 "update circuit drawing"

I went and checked out the website you suggested. There are some very fine examples of some great tube amps. I think those projects are a little beyond my expertise, but nonetheless I can definitely see the motivation to build some of the units. It would be great to go through and fabricate the ent...
by leakstereo20
Tue Oct 16, 2012 2:35 pm
Forum: Amplifiers
Topic: CJ MV75 "update circuit drawing"
Replies: 9
Views: 4199

Re: CJ MV75 "update circuit drawing"

You may want to check out the Conrad Johnson Manual and schematics thread. There are schematics for the MV75 in there. Hope that helps. So you plan on building one of these all by yourself? That's pretty cool, you will have to let us know how it goes! :) Hello, Thanks for the link to CJ schematics....
by leakstereo20
Mon Oct 15, 2012 2:48 pm
Forum: Amplifiers
Topic: CJ MV75 "update circuit drawing"
Replies: 9
Views: 4199

CJ MV75 "update circuit drawing"

Hi, Anyone who know whether the shown CJ MV75 drawing is correct ? Please find the "new" updated drawing at : https://picasaweb.google.com/vbkolsen/ConradJohnsonMV75ModifiedToMV40#5804082298957941074 NEW link The Conrad Johnson equipment/amplifiers of any kind is very difficult to find in ...
by leakstereo20
Mon Oct 15, 2012 1:54 pm
Forum: Member Presentation Thread
Topic: Hi-Fi greetings from Denmark
Replies: 1
Views: 771

Hi-Fi greetings from Denmark

Hi valveamplifier friends, I am optometrist with electronics as my hobby. 20 years ago I made my first valveamp based on the CJ MV75 circuit. Besides motorboating and burned fingers, I managed to built the circuit with a pair of EL34 by use of a voltagemeter only . It took several weeks to get the p...