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Thread: Bigbottle MC Phonostage

  1. #181
    Join Date: Feb 2013

    Location: W Lothian

    Posts: 99,005
    I'm Grant.

    Default

    Quote Originally Posted by Bigman80 View Post
    That's ok mate. It's a way off being ready. That's only the initial mock up. It needs loads of refinement. Won't see these boards for 3 - 6 month's, need a prototype to check all is well before committing to a group buy.

    It's all money too.

    Admittedly, can be done in a cheap wooden box but even the parts cost
    good, i thought i'd missed a chance of summat nice
    Regards,
    Grant .... ؠ ......Don't be such a big girl's blouse

    I've said it before and I'll say it again: democracy simply-doesn't-work
    .... ..... ...... ...... ................... ..... ..... ..... ..... .....
    FIIO K7 BT, M11 PLUS, BTR7, KA5 - OPPO BDP-103D - PANASONIC UB450 - PANASONIC 4K ULTRA HD TV - PIXEL 6 - AVANTREE LR BLUETOOTH - 2* X600 SOUNDCORE - HEADPHONES INCLUDE, FIIO, NURAPHONES', FOCAL, OPPO, BOSE, CAMBRIDGE, BOWER & WILKINS, DEVIALET, MARSHALL, SONY, MITCHELL & JOHNSTON - 2*ZBOOK'S- MERCURY BD ROM, ROON, QOBUZ, TIDAL, PLEX, CYBERLINK, JRIVER - MULTI HDD'S -

    Oh my god! There's nothing wrong with the bidet is there?

    “Nothing discloses real character like the use of power. It is easy for the weak to be gentle. Most people can bear adversity. But if you wish to know what a man really is, give him power. This is the supreme test. It is the glory of Lincoln that, having almost absolute power, he never abused it, except on the side of mercy".

    “You see these dictators on their pedestals, surrounded by the bayonets of their soldiers and the truncheons of their police ... yet in their hearts there is unspoken fear. They are afraid of words and thoughts: words spoken abroad, thoughts stirring at home -- all the more powerful because forbidden -- terrify them. A little mouse of thought appears in the room, and even the mightiest potentates are thrown into panic.”

    "You don't have free will. You have the appearance of free will.”

    “There's a war out there, old friend. A world war. And it's not about who's got the most bullets. It's about who controls the information. What we see and hear, how we work, what we think... it's all about the information!”


    ***SMILE, BE HAPPY***

  2. #182
    Bigman80 Guest

    Default

    Quote Originally Posted by struth View Post
    good, i thought i'd missed a chance of summat nice
    No mate, you've not missed it. I loan you one when it's built. Just for curiosity sake.

  3. #183
    Join Date: Feb 2013

    Location: W Lothian

    Posts: 99,005
    I'm Grant.

    Default

    Regards,
    Grant .... ؠ ......Don't be such a big girl's blouse

    I've said it before and I'll say it again: democracy simply-doesn't-work
    .... ..... ...... ...... ................... ..... ..... ..... ..... .....
    FIIO K7 BT, M11 PLUS, BTR7, KA5 - OPPO BDP-103D - PANASONIC UB450 - PANASONIC 4K ULTRA HD TV - PIXEL 6 - AVANTREE LR BLUETOOTH - 2* X600 SOUNDCORE - HEADPHONES INCLUDE, FIIO, NURAPHONES', FOCAL, OPPO, BOSE, CAMBRIDGE, BOWER & WILKINS, DEVIALET, MARSHALL, SONY, MITCHELL & JOHNSTON - 2*ZBOOK'S- MERCURY BD ROM, ROON, QOBUZ, TIDAL, PLEX, CYBERLINK, JRIVER - MULTI HDD'S -

    Oh my god! There's nothing wrong with the bidet is there?

    “Nothing discloses real character like the use of power. It is easy for the weak to be gentle. Most people can bear adversity. But if you wish to know what a man really is, give him power. This is the supreme test. It is the glory of Lincoln that, having almost absolute power, he never abused it, except on the side of mercy".

    “You see these dictators on their pedestals, surrounded by the bayonets of their soldiers and the truncheons of their police ... yet in their hearts there is unspoken fear. They are afraid of words and thoughts: words spoken abroad, thoughts stirring at home -- all the more powerful because forbidden -- terrify them. A little mouse of thought appears in the room, and even the mightiest potentates are thrown into panic.”

    "You don't have free will. You have the appearance of free will.”

    “There's a war out there, old friend. A world war. And it's not about who's got the most bullets. It's about who controls the information. What we see and hear, how we work, what we think... it's all about the information!”


    ***SMILE, BE HAPPY***

  4. #184
    Join Date: May 2017

    Location: West Sussex, UK

    Posts: 775
    I'm Steve.

    Default

    Hi Oliver
    When the boards are ready let me know, I'll take one.
    Also happy to build one of your prototype boards

    Steve...
    Turntable; Rega p8
    Cartridge; Alpheta mc
    Phono Stage; Rega Aria, Bigbottle 3 mm/mc
    Amplifier; Rega Elicit
    Speakers; Rega Rx3

  5. #185
    Bigman80 Guest

    Default

    Quote Originally Posted by STD305M View Post
    Hi Oliver
    When the boards are ready let me know, I'll take one.
    Also happy to build one of your prototype boards

    Steve...
    Hi Steve,

    Ok mate. Thank you.

    Minimum order will be 5 boards so I'll definitely have one knocking about.

  6. #186
    Join Date: Jan 2014

    Location: london se6

    Posts: 823
    I'm AndyElectroNumpty.

    Default

    Hi Oliver

    Thinking about parts etc , looked at the build guide and the

    Transformer spec is:

    • Primary 230V (or your local rating of supply 110v/220v/230v etc), SEC1 = 165V for the HV, SEC2 = 2x 9v

    Which is fine but what about the Amp ratings?

    Cheers Andy

  7. #187
    Bigman80 Guest

    Default

    Hi Andy,

    It's this:

    Primary: 240v
    Secondary: 1x 165v 0.08
    Secondary: 1x 9-0-9v 1A

  8. #188
    Join Date: Jan 2014

    Location: london se6

    Posts: 823
    I'm AndyElectroNumpty.

    Default

    great thanks

    Sent from my SM-G950F using Tapatalk
    At the cutting edge of Numptyness!

  9. #189
    Bigman80 Guest

    Default Alterations to the BOM!

    Alterations to BOM have been made to provide better performance in the RIAA figures. The changes here are essential to the performance of the phonostage.

    Here they are:

    Alterations:

    R113.213 = 68K

    R121.221 = 180K

    R122.222.= 27K

    C131.231 = DO NOT FIT!

    If anyone requires a new copy of the BOM, just drop me a message.

    This is the last change to this PCB.

  10. #190
    Join Date: Jan 2014

    Location: london se6

    Posts: 823
    I'm AndyElectroNumpty.

    Default

    well I've part Brexit proofed (lol) my build by ordering a tranny from Toroidy tonight.

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