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Thread: DCB1 TURBO BUILD @600Ma

  1. #71
    Join Date: Jan 2014

    Location: london se6

    Posts: 823
    I'm AndyElectroNumpty.

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    Steve

    That looks really tidy, nice one. How did you get it to 750 mA rather than the 600?

    Cheers Andy

  2. #72
    Join Date: May 2017

    Location: West Sussex, UK

    Posts: 775
    I'm Steve.

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    Hi Ollie
    Just need to sort a date, Ill probably have to stay over in a hotel, its a long way up from near Brighton !!!
    Turntable; Rega p8
    Cartridge; Alpheta mc
    Phono Stage; Rega Aria, Bigbottle 3 mm/mc
    Amplifier; Rega Elicit
    Speakers; Rega Rx3

  3. #73
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 6,089
    I'm Alan.

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    Quote Originally Posted by smangus View Post
    Steve

    That looks really tidy, nice one. How did you get it to 750 mA rather than the 600?

    Cheers Andy
    It's just down to the value of resistor in the first half of the shunt regulator, provided you meet the following criteria:

    1) The FETs are adequately heatsinked,
    2) The rectifiers are the larger current ones specified in the BOM,
    3) The mains transformer is adequately rated. A 100VA will just do 1.2A, anything below this is fine.

  4. #74
    Bigman80 Guest

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    Quote Originally Posted by STD305M View Post
    Hi Ollie
    Just need to sort a date, Ill probably have to stay over in a hotel, its a long way up from near Brighton !!!
    I know mate, no rush for me as mine isn't even built

    Also, as you know I have other things I need to sort out before I start trotting round the land with DCB1s.

    Maybe Manny would bring his CharismaX.

  5. #75
    Join Date: Jan 2014

    Location: london se6

    Posts: 823
    I'm AndyElectroNumpty.

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    Quote Originally Posted by Firebottle View Post
    It's just down to the value of resistor in the first half of the shunt regulator, provided you meet the following criteria:

    1) The FETs are adequately heatsinked,
    2) The rectifiers are the larger current ones specified in the BOM,
    3) The mains transformer is adequately rated. A 100VA will just do 1.2A, anything below this is fine.
    Ah , thanks Alan.

  6. #76
    Join Date: Sep 2014

    Location: Northern Ireland

    Posts: 1,403
    I'm John.

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    Quote Originally Posted by STD305M View Post
    Hi All

    My dcb1 is now built

    [IMG][/IMG]

    [IMG][/IMG]

    The Preamp is running at a little over750mA at the moment, once bedded in I will be pushing it to the 1.2A.
    As for sound, there is quite an improvement over my previous build now with Macca, Oi mate (Martin) your gonna want yours pushing to 750mA to 1.2A

    S..
    Very tidy looking build Steve, congrats.

    Glad it's sounding good too!

  7. #77
    Join Date: May 2017

    Location: West Sussex, UK

    Posts: 775
    I'm Steve.

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    Quote Originally Posted by JohnJo View Post
    Very tidy looking build Steve, congrats.

    Glad it's sounding good too!
    Hi JohnJo
    Looks are not to bad but the sound is fantastic mate, I'm really pleased,,,

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

  8. #78
    Join Date: May 2017

    Location: West Sussex, UK

    Posts: 775
    I'm Steve.

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    Quote Originally Posted by smangus View Post
    Steve

    That looks really tidy, nice one. How did you get it to 750 mA rather than the 600?

    Cheers Andy
    Hi Andy, There are 2 resistors in the picture just below the bank of 4 caps (brown) you need to change the values of these. As standard the board runs at 60 to 70mA with the supplied resistors, just change the values !!

    If you want to further improve the sound change the quality of the 8 resistors around the orange relay for higher quality resistors .
    Eg. Audio Note or similar.

    To be honest the first build I did was only running at 200mA but sounded Dam Good !!!!
    S.
    Turntable; Rega p8
    Cartridge; Alpheta mc
    Phono Stage; Rega Aria, Bigbottle 3 mm/mc
    Amplifier; Rega Elicit
    Speakers; Rega Rx3

  9. #79
    Join Date: Nov 2012

    Location: Oadby, Leicestershire, UK

    Posts: 311
    I'm Manny.

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    Quote Originally Posted by Bigman80 View Post
    I know mate, no rush for me as mine isn't even built

    Also, as you know I have other things I need to sort out before I start trotting round the land with DCB1s.

    Maybe Manny would bring his CharismaX.
    Bring your new DCB1 to mine, you'll get to hear the Conrad Johnson.....

  10. #80
    Bigman80 Guest

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    Quote Originally Posted by vinyl View Post
    Bring your new DCB1 to mine, you'll get to hear the Conrad Johnson.....
    I will. I'll bring the Krell

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