strangeandbouncy
Well-known member
I have used Siemens, so probably V72a, and I didn't think they sounded radically different. Quite the contrary. However, I wasn't doing a shoot out, and it was a decade ago at least . . .
Poor Man's v76
- Thread starter MeToo2
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helterbelter
Well-known member
Kingston said:
I didn't mean "colouring as hell" being a bad thing... Quite the opposite actually. IMO it makes it something special.
RR ?
Not Rolls Royce, more Rock&Roll. ;D
tommypiper
Well-known member
I visited CJ a while back and heard his scratch build V76 first-hand, and CJ's sounded better than any original, IMO. At the time my comment was that CJ's made a SM 57 sound like a U-47, seriously. It was huge. Amazing.
I've also read here somewhere a long time ago that part of the sound is the power supply rectifier diodes, (which may be germanium I don't know?). Replacing them with modern diodes for repair purposes totally changes the sound. I would never underestimate the "mojo" effect and influence a power supply can have...
In any case, if you're going to clone, follow CJ's build and the materials he used, you won't go wrong. BTW, he used only one EF-804-S, for the first stage, the others were the non-S versions, EF-804 which are cheaper and sounded fine and very quiet. No need to use all S-versions. Also, aren't there modern versions of the EF-806 and other similar and related tubes being made, or cheaper, which could be substituted? In any case, the non-S version works fine.
I've also read here somewhere a long time ago that part of the sound is the power supply rectifier diodes, (which may be germanium I don't know?). Replacing them with modern diodes for repair purposes totally changes the sound. I would never underestimate the "mojo" effect and influence a power supply can have...
In any case, if you're going to clone, follow CJ's build and the materials he used, you won't go wrong. BTW, he used only one EF-804-S, for the first stage, the others were the non-S versions, EF-804 which are cheaper and sounded fine and very quiet. No need to use all S-versions. Also, aren't there modern versions of the EF-806 and other similar and related tubes being made, or cheaper, which could be substituted? In any case, the non-S version works fine.
funny, i liked Tommypipers V76 better.
had more of the "funk"
could be the weird rectifier and old caps, i don't know.
a Jensen 10k input sounds fantastic on those v72 or v76 inputs.
not as much headroom as the mighty v76, but not as much core loss or hi end roll off either.
the 72 sounds real cool with a k 241 d on the input, 1:14, but pricey.
had more of the "funk"
could be the weird rectifier and old caps, i don't know.
a Jensen 10k input sounds fantastic on those v72 or v76 inputs.
not as much headroom as the mighty v76, but not as much core loss or hi end roll off either.
the 72 sounds real cool with a k 241 d on the input, 1:14, but pricey.
MeToo2
Well-known member
Forgive me for being a noob, but do you have a link? [obviously I tried google & the forum search myself already...]tommypiper said:
tommypiper
Well-known member
Here's one thread http://www.groupdiy.com/index.php?topic=322.msg3667#msg3667
Maybe you can get CJ to share more... and post some drawings or details, he knows how to do it and I think he documented it here, or maybe at the previous location...? Do a search for v76 and CJ and you'll see more random posts and threads on the subject.
Be warned. It's not something for the faint of heart. You have to be somewhat obsessed and single-minded for a long period of time.
Like CJ.... If you have kids or a wife you may be disqualified... :-\
Maybe you can get CJ to share more... and post some drawings or details, he knows how to do it and I think he documented it here, or maybe at the previous location...? Do a search for v76 and CJ and you'll see more random posts and threads on the subject.
Be warned. It's not something for the faint of heart. You have to be somewhat obsessed and single-minded for a long period of time.
Like CJ.... If you have kids or a wife you may be disqualified... :-\Michael Tibes
Well-known member
What iron did drip suggest for it's V72?
Michael
Michael
tommypiper
Well-known member
Michael Tibes said:
http://dripelectronics.com/community/showthread.php?tid=217
I'm not sure why the Lundahl didn't work out, they are usually great, but there are so many variations on their designs and connections that one has to try, and also talk to Lundahl.... As CJ said, the Jensen is apparently wonderful, as mentioned in the link... BTW, Drip is no longer offering his V72 PCB, according to his home page... Anyway, reductive analysis ("it's the choke! no, it's the iron, no it's the tubes!") in general misses the point of these designs. It's everything. Once you get transformers that work with the circuit (see link above), you don't need to worry about vintage mojo and all that jargon, IMHO. It's the whole package that makes the mojo... (I'm a bit worn out after 15 years of "vintage" mojo discussions by now anyway....)
oh boy, did ollie go after drip on those v72 fabs?
does that mean no v76 fab?
does that mean no v76 fab?
Michael Tibes
Well-known member
CJ said:
I wonder how he could? The only thing I can imagine Olli really owns (probably apart from some original tooling) is his brand name, which is a creative combination of glorious defunkt companies' names. He couldn't have any 'rights' in the circuit, could he? I believe the circuits were actually originally from the german institute of broadcast technology? Sure he knows a lot and has dived into things very deeply, but he didn't invent the V72 / V76 and their variations.
Maybe drip just didn't sell enough or he has something bigger in mind already? Or he was just too busy doing the 660?
Michael
you are probably right.
thinkin about that telefunken mic/xfmr deal that got messy,
thinkin about that telefunken mic/xfmr deal that got messy,
