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In the Forum: Analog Playback
In the Thread: I need a “second-type” phonostage.
Post Subject: I need a new 7788-7721 (perhabs) phonostage…Posted by Romy the Cat on: 12/12/2006

I decided to make this post in this thread (you are at a second page of the thread) about the “second-type” phonostage. My needs for a Santa’s bring me a nice “second-type” phonostage really got stronger. If you remember my 7788-7721 tow stages, phonostage with air caps?

http://www.goodsoundclub.com/TreeItem.aspx?postID=41#41

I had been use it for a couple hears as my “second-type” phonostage. It had problem that it has one input. It delivered very much first class performance but…. It died recently. I checks tubes, they are ok and all operational parameter are fine but sound went very dramatically south on this correctors.  I accidentally left the PS of this corrector on with disconnected phonostage. The PS had no bleeder and it was … input choke LCRC. So, instead of 400V it was running I wide open at... should be near 500V… on the 16 caps of 450V/450uF each… Did I tell that I left it like this for 2 weeks?  Ironically none of the caps got shorted but the corrector sound absolutely horrible after this… I do not really wiling to fix it as I would like to have a phonostage with multi-input. Perhaps it would make sense to re-package it in another enclosure with 4 inputs….

The problem is that I do not want to do it anymore. It would be so cool if I fund somebody to whom I might give a fully developed circuit, with parts, instructions and design incisures, some money and then juts pick it up is a couple weeks. I relay hat to build this again. Initially to build that two sated corrector with the magnificent 7788-7721, trying to learn how to get sound out of it was “almost fun” but to build already known circuit is boring like hell… Are anybody out there? Besides making some money I would provide pars for two correctors and you might get for yourself a very-very seriously sound phonostage… How else I could solicit you? How about that I promise do not insult you on my sire for the next 3 years? :-)

The only hesitation I might have is that my 7788-7721 is 66dB gain, not enough…. Perish I would put one more gain stag in there…. Anyhow, any offers and proposals would be considered….
 
Rgs,
Romy the caT

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