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Thread: Mod your Beresford 7520

  1. #1651
    Join Date: Oct 2008

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    I'm Gary.

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    Quote Originally Posted by StanleyB View Post
    What's that commercial again ? 'Just do it'.
    If I had to explain every technical detail behind some of some mods, my competitors would be able to build their DACs even better .
    so its worth doing.
    thanks Stan.
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  2. #1652
    Join Date: Apr 2008

    Location: Cheshire, UK

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    I'm Clive.

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    I suspect that resistor behind the reg drops 12V (or 15V) to something like 8V for the 7805 so the 7805 doesn't have to burn off too many volts. As the Murata regs need more volts to work with there's a risk the reg will "drop out" and not regulate properly.

    Just guessing....
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  3. #1653
    leo's Avatar
    leo is offline Circuit Junkie & DIY Room Forum Leader
    Join Date: Jan 2008

    Location: Notts UK

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    Its one of those subtle but worthwhile free mods
    Cheers,
    Leo

  4. #1654
    Join Date: Jun 2010

    Location: Breda, The Netherlands

    Posts: 15
    I'm Jasper.

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    Quote Originally Posted by StanleyB View Post
    If you intend to do the passive mod, then you only need to upgrade the 5V regulator. You would still need something like the Caiman 15V PSU to correctly power the Murata reg though. And the 10R resistor behind the existing 5V reg should be replaced with a wire link.
    Do i also have to replace another resistor when i put in the both the 5 and 12 volt Murata's?
    Jasper.

  5. #1655
    Join Date: Feb 2008

    Location: http://www.homehifi.co.uk

    Posts: 6,288

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    Quote Originally Posted by Recoil View Post
    Do i also have to replace another resistor when i put in the both the 5 and 12 volt Murata's?
    . I repeat: remove the resistor behind the 5V reg if fitting the Murata reg.

  6. #1656
    Join Date: Jun 2011

    Location: Sydney

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    I'm Moe.

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    wow this thread is amazing!!! Now just got to wait till this weekend

  7. #1657
    Join Date: Jun 2011

    Location: Sydney

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    I'm Moe.

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    has anyone tried using this ? http://www.ebay.com.au/itm/Burson-Au...item1c154d6a22
    I can get them cheaper as they are an Australian company. I was thinking using this with my gatorized caiman. : )

  8. #1658
    Join Date: Mar 2010

    Location: London, UK

    Posts: 210
    I'm Rob.

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    Quote Originally Posted by audionewbi View Post
    has anyone tried using this ? http://www.ebay.com.au/itm/Burson-Au...item1c154d6a22
    I can get them cheaper as they are an Australian company. I was thinking using this with my gatorized caiman. : )
    I always wondered how this would work with Beresford DAC!

    I am not only sure how will you conect especaly if you use Caiman and Gator.
    Let's us now how it sounds in comparisson with stock Caiman.
    Rob

  9. #1659
    Join Date: Jun 2011

    Location: Sydney

    Posts: 71
    I'm Moe.

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    Quote Originally Posted by RoboCopper View Post
    I always wondered how this would work with Beresford DAC!

    I am not only sure how will you conect especaly if you use Caiman and Gator.
    Let's us now how it sounds in comparisson with stock Caiman.
    i just read a post where Stan said it is not possible due to power mismatching.

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