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Thread: DIY phonostage.

  1. #1
    Join Date: Mar 2010

    Location: Sheffield

    Posts: 2,355
    I'm Simon.

    Default DIY phonostage.



    I've been slaving over this for a while now an it's time to start boxing it up. I'm happy with my choice for IEC's and switch gear, but I'm looking for something new for my RCA sockets and most important of all the internal wiring which needs to be shielded for best performance.

    Any suggestions for low mass RCA sockets and shielded co-ax?
    Kuzma Stabi/S 12", (LP12-bastard) AC, USB controlled bi-phase Class A regenerator psu. Benz LP, Paradise (phonostage). MB-Pro, Mdac, Muse 200, Yamaha NS1000m

  2. #2
    Join Date: Dec 2008

    Location: Yorks

    Posts: 16,649
    I'm Nobody.

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    Simon:
    What made you choose the Dale resistors? Did you consider the Takman's!

  3. #3
    Join Date: Mar 2010

    Location: Sheffield

    Posts: 2,355
    I'm Simon.

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    The Dale's are a 0.1% mil-spec rated resistor from one of the worlds leading manufacturers with a 50+ year history of supplying manufacturers of precision electronics equipment and they are used in everything from Siemens medical imaging equipment to Tektronix who make my oscilloscope.

    and the Takman's aren't. They are overpriced and underspecced, regardless of any magic they may or may not impart.
    Kuzma Stabi/S 12", (LP12-bastard) AC, USB controlled bi-phase Class A regenerator psu. Benz LP, Paradise (phonostage). MB-Pro, Mdac, Muse 200, Yamaha NS1000m

  4. #4
    Join Date: Dec 2008

    Location: Yorks

    Posts: 16,649
    I'm Nobody.

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    Ah right its the good old specifications again then

  5. #5
    Join Date: May 2008

    Location: Surrey

    Posts: 5,625
    I'm Rob.

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    Who makes the PCB?
    Buy Bose...And get your parking validated!.

  6. #6
    Join Date: Mar 2010

    Location: Sheffield

    Posts: 2,355
    I'm Simon.

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    Andre, it's the 0.1% more than anything else that made me choose them, that and price. I'll be using fancy Charcrofts for the loading once i've homed in on my preferred value with this phonostage.

    Rob, it was a DIYAudio.com group buy. The circuit is by Joachim Gerhard with layout and routing added by others.
    Kuzma Stabi/S 12", (LP12-bastard) AC, USB controlled bi-phase Class A regenerator psu. Benz LP, Paradise (phonostage). MB-Pro, Mdac, Muse 200, Yamaha NS1000m

  7. #7
    Join Date: Aug 2008

    Location: London

    Posts: 2,427
    I'm Nat-andthat'swhyIdrink.

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    Quote Originally Posted by Rare Bird View Post
    Ah right its the good old specifications again then
    And that they have been used in such accurate and long lasting well built equipment surely.

    A phono stage should be treated as accurate equipment too due to the small signal.

  8. #8
    Join Date: Aug 2008

    Location: London

    Posts: 2,427
    I'm Nat-andthat'swhyIdrink.

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    Quote Originally Posted by sq225917 View Post

    Rob, it was a DIYAudio.com group buy. The circuit is by Joachim Gerhard with layout and routing added by others.
    I've been interested in that thread too. Had you tried out any of the simple circuits near the beginning of the thread? Looked more my level.

    I hadn't realised they had finalised anything (due to the length of the chatting).

  9. #9
    Join Date: Mar 2012

    Location: Gloucestershire

    Posts: 3,951
    I'm Paul.

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    Nice work Simon.

    For internal shielded wiring, I'd suggest the silver screened 4N silver wire shown on this page: http://www.hificollective.co.uk/components/wire.html or alternatively the Cardas 33AWG triple core shielded wire (just twist all three cores together once stripped and then tin)

    Pricey but good.

    If you get stick RE Sockets, let me know. I can supply a wide variety depending on budget.

  10. #10
    Join Date: May 2008

    Location: Surrey

    Posts: 5,625
    I'm Rob.

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    Quote Originally Posted by sq225917 View Post

    Rob, it was a DIYAudio.com group buy. The circuit is by Joachim Gerhard with layout and routing added by others.
    Aah. I have had a few GB's from DIYaudio. Thanks.
    Buy Bose...And get your parking validated!.

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