ATMA SPHERE SCHEMATIC for a UV-1 M/M.......

I can't believe I can get so many answers , that have nothing to do with the problem.....It would take all of 5 minutes with a diagram....Most of the people answering this thread have never even worked on a tube amp , much less tried to modify one.........The reason Ralph can sell one of these for so much money , is there is some engineering involved........I have a better idea, I will sell you this thing and you can work on it tell the end of time if you want.......That way you might learn something and then be able to help others instead of suggesting reverse engineering something that is not complete.......When I started this project I though it would be very simple to get a diagram and complete this in a couple hours but I probably won't live long enough to get a diagram.......I think I'll get rid of all of the Atma Sphere stuff I have.....I can put it with the  VPI stuff I can't get parts for....That will take care of two problems.....Watch on Audiogon for the Atma Sphere sale......Please no more suggestions on this , I'm done with it all.....Thanks

I am surprised you can't deduce the circuit from the info Ralph gave you. If you buy the amp and open it up, you should be able to draw the circuit from following the pathways. I used to do that all the time with old tube amps like Croft, Leak, Radford, TVA etc.

Where would we have been in the repair business without the people like Howard Sams and all the companies that provided schematics.....I was in the TV repair industry half my life and it wouldn't have been possible without provided schematics by the electronic industries.......The only thing you get out of that is poorly repaired equipment, repaired by uninformed repair people........Who benefits from that ??   No -body  ............Will        

I would like this to be text book wired, otherwise it is unacceptable to me......If you can't do it correctly , then don't do it.......There is much more engineering in this than is being made out......For those who don't get it, its not necessary to advise.......And it is becoming much more trouble than it is worth..........Thanks for all the comments, good and bad....Will  

As predicted, Ralph provides the kind of service that helps those needing it...

@charles1dad, exactly!

Consider the days when these audio / video circuits and designs were actually cutting edge, SAMS Photofacts and the like published the requisite detailed component documentation.  As a former chemist / material scientist, I can easily reverse engineer most formulations through the MSDS (Material Safety Data Sheet), but the means exist for a company wanting to protect itself against it.  No one wants government involvement and the hassle it brings along less than I do.  The industry evolving to the current state makes it clear the balance toward consumer protection will not happen without some higher entity involving itself

@autospec 
Well,  For Myself,  I'm a speaker guy and can follow anything that has to do with a speaker, follow direction draw schematics, make changes, repairs etc... Amps, pre's, not so much, but I can look at and follow a schematic and make changes as needed. If Ralph told me to change the cathode bypass cap.... I'd say Huh,  well maybe not,  I understand the cathode for tubes.... My point is or question is:  Do you understand what Ralph is saying or are you more like me and need a schematic to follow along?  I can tell you that after 8  or 9 years on this forum, I've never seen anyone more helpful than Ralph Karsten.  

There are more issues that just a board, which of course won't fit in a UV-1......Power supply hook-up and values, parts placement for low noise problems.......Sometimes I have to ask myself why I would even ask  ??       I'll just buy a PAS-3 and use it......... 

Here is the PAS-3,  all over the internet.... the v5 and v6 boards are both on this pdf

http://www.curcioaudio.com/pas_mnl.pdf

We simply don’t have schematics that look at that good for public consumption.

As some of you may know, the UV-1 is based on the mods/updates we would do to a Dynaco PAS-3.

So the phono stage is very similar to that of the PAS-3. The differences are as I explained to Will:
1) we don’t employ the cathode to cathode feedback resistor
2) 12AT7s are used instead of 12AX7s
3) a cathode bypass cap is employed on the 2nd stage of gain
4) only one output coupling cap is used and the feedback is connected to the output of that. A 10K resistor is then in series with the output of the circuit.

So if you can find a PAS-3 circuit online and apply these changes, then you can build this circuit.

+1 Jetter!
And, it seems Ralph did try to help you. Though maybe what you are asking is proprietary.
B

Ralph    I would hope that the work could be a little more technical than the description over the phone.....But what do I know........Why is there never a simple answer to a simple question........I will spend more time trying to get a schematic than I will ever spend doing the work........Who is served ??

Will, did the description of the circuit I gave you on the phone not work for you?

If all else fails, guess you can just have Ralph complete it.

I wouldn't want people to mis-understand me......I have nothing against Ralph, its his property and if he wants to keep it , that's OK with me.....I'm sure he doesn't mind me looking somewhere else for it......I've worked with Ralph before and he is a very nice person to deal with........This forum doesn't need to get carried away with this.......All I need is a schematic for my UV-1 M/M project             Will

I had a very good friend one time.....His name was John Bedini.....He wouldn't share schematics either and I'm not sure that is the way to go.....There is a lot of fine equipment that either gets repaired poorly because of the lack of good information or is not repaired at all.....I see it every day with the Bedini amps.......I also respect Ralph's view-point......But I would like to do something with this little pre-amp and I would like to do it to Ralph's quality........Will 

try talking about how the intellectual property of many designers is stolen from them and sold as cheap knock-offs from small Chinese companies, on eBay. Where some people buy these ’copies’ to the tune of hundreds of examples.

Where the circuit itself is the LEAST of the aspects that makes the gear perform as well as it does.

Nevertheless, hundreds of the bad copies are sold....to people who do not understand these aspects. Thinking they are getting something for nothing. A quick search on ebay will show many dozens of re-sellers of cheap copies.

For some enlightenment on this subject, do a search and you will find much discussion on this at the audio site ’DIYAudio.com’. Some of the designers will share their experiences. Quite the horror stories.

Essentially, is it any wonder at all that some don’t share their schematics, these days?

+1 mcintech

This may fall into the area of intellectual property.

Trelja, This is a problem with some in the  High End audio sector. 
I own a Response Audio Bella Extreme 100 watt mono block amplifier and needed the schematic for a technician to do service.  Multiple requests were made to company owner Bill Baker who promised to send a copy but never followed through with it. Very frustrating. 
Charles 

As the current service department for Nagra, and former service tech for dCS, Musical Fidelity, NAD, Arcam McIntosh Labs and several others, I guarantee that none of those companies ever allowed schematics to be distributed to customers or non-authorized service companies.
Most manufacturers require signing a non-disclosure before sending the tech their manuals.
I totally agree with this philosophy; keeps all the hard earned R&D costs in house.

Trelja:   Did you read my earlier post.........I talked to Ralph and he doesn't provide schematics.  What more can I say about that ??    Will

Hello, Will.  Ralph's proven he's one of the better people in the industry, and I feel confident he'd help get you where you need to be.

Coincidentally, high-end audio manufacturers of less ethical nature leave their customer base in a very bad way by having taken on this "proprietary" position of their components in the past generation.  Having seen the number of high-end audio companies who go belly up obviously correlate with the sad reality of all too many folks wind up with a multi-thousand dollar door stop because they can't find folks to repair their components, it's become a huge issue in my thinking.  People invest in complicated solid state amplification and digital components with eye watering prices from the sort of tiny boutique manufacturers that represent this industry.  What happens to their purchase over time, especially, if the company's long gone?

Not sure if this current effort will succeed, but I'd love to see our community glean benefit from those leading the charge in the larger consumer sphere, a major provision of which would be a return to the days when manufacturers published meaningful service manuals / schematics: https://motherboard.vice.com/en_us/article/zmqa49/washington-right-to-repair-iphone-cpu-throttling

I have called Ralph about this and he does not provide schematics for this pre-amp.....So I need to buy one on the secondary market....That is why I'm looking here..........Will

Call Atma-Sphere directly.  They have one of the best customer service in the industry.

Ralph is on the board here, why not just PM or call him ?