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Thread: CS4397 dac

  1. #251
    Join Date: Sep 2008

    Posts: 13

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    Quote Originally Posted by leo View Post
    Just noticed , Q1 emitter should go to R3
    You can alter the gain by adjusting the emitter resistors on the differential pair

    This circuit is based on this http://home.quicknet.nl/qn/prive/ra....ancer_evo3.pdf
    Thanks Leo. I've made that change.

    I had intended to have a few boards made, but the Aussie dollar is in the toilet at the moment so It's quite expensive to have the boards done. I'm looking at other options at the moment.

    Here is the final stereo board layout I ended up with. Board size is 50mm x 80mm

    http://img224.imageshack.us/my.php?image=os31rn3.jpg
    Last edited by fordgtlover; 29-10-2008 at 09:08.

  2. #252
    Join Date: Oct 2008

    Posts: 10

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    Hello FordGTlover.

    May I suggest the next website for your pcb ?!
    a quick price calculation was about 4 USD a pcb.

    http://www.makepcb.com/

    have fun ! and remember, i am interested in a board or 2 also

    Naqua

  3. #253
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,258
    I'm BigBobJoylove.

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    I've just been reading through this thread, and I absolutely love the fact that we have some hardcore knowledgeable electronics engineers on here, gives the DIY section massive credibility (even if I haven't a sodding clue what you're all talking about).

    Lounge:
    Samsung QE65QN80F 65" QLED TV
    Echo Link streamer
    RME Audio ADI-2 FS (AK4493) DAC
    XMOS DSD Async
    Emotiva A2+ power amplifier
    Neat Motive SX1 speakers
    Van Damme 4.00mm tour grade speaker cable
    Nakamichi Fanlock banana plugs
    Chord Clearway XLR interconnects
    Audioquest Crimson USB interconnect
    QED Quartz Reference optical interconnect


    Studio:
    2022 MacBook Pro 14" M1 Pro 10/16/16/16
    SMSL DAC
    Modified Fosi P4 preamp
    Adam Audio T5Vs
    Fenton 10" active sub
    Roxel RBS 300s
    Several valve preamps

  4. #254
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    leo is offline Circuit Junkie & DIY Room Forum Leader
    Join Date: Jan 2008

    Location: Notts UK

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    I didn't expect my thread to be so popular

  5. #255
    leo's Avatar
    leo is offline Circuit Junkie & DIY Room Forum Leader
    Join Date: Jan 2008

    Location: Notts UK

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    Quote Originally Posted by fordgtlover View Post
    Thanks Leo. I've made that change.

    I had intended to have a few boards made, but the Aussie dollar is in the toilet at the moment so It's quite expensive to have the boards done. I'm looking at other options at the moment.

    Here is the final stereo board layout I ended up with. Board size is 50mm x 80mm

    I wouldn't pay too much, this was intended to be cheap
    Other option is to etch your own board, you could use the layout here on page5 as its single sided http://home.quicknet.nl/qn/prive/ra..../index_en.html

  6. #256
    Join Date: Oct 2008

    Posts: 21

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    You are an electrical engineer? I am in 1st year in college planning on majoring in either mechanical or electrical... then I can understand more of the complicated things you talk about lol.

  7. #257
    Join Date: Sep 2008

    Posts: 13

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    Quote Originally Posted by Naqua View Post
    Hello FordGTlover.

    May I suggest the next website for your pcb ?!
    a quick price calculation was about 4 USD a pcb.

    http://www.makepcb.com/

    have fun ! and remember, i am interested in a board or 2 also

    Naqua
    I just had a quick look, and it look like a great deal. I'll do a bit more poking around, but I think you may have found me a winner.

    Quote Originally Posted by leo View Post
    I wouldn't pay too much, this was intended to be cheap
    Other option is to etch your own board, you could use the layout here on page5 as its single sided http://home.quicknet.nl/qn/prive/ra..../index_en.html
    I agree. I don't want to pay too much. I have never etched a board, and I suspect others are in the same boat. I wanted to give myself and others the opportunity to get the best out of this little DAC for a reasonable price. The place Naqua linked to looks very cheap.
    Last edited by fordgtlover; 29-10-2008 at 08:26.

  8. #258
    Join Date: Feb 2008

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

    Posts: 6,289

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    Quote Originally Posted by fordgtlover View Post
    I wanted to give myself and others the opportunity to get the best out of this little DAC for a reasonable price. The place Naqua linked to looks very cheap.
    I have been following this thread, and you are doing a great job.
    When you are finally finished, let me know how much it all cost. Then I can loan you one of my DAC to compare the two...

    Stan

  9. #259
    Join Date: Sep 2008

    Posts: 13

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    Quote Originally Posted by Sensimilia View Post
    I have been following this thread, and you are doing a great job.
    When you are finally finished, let me know how much it all cost. Then I can loan you one of my DAC to compare the two...

    Stan
    Thanks for the words of encouragement, and the kind offer.

    Cheers

    Rob

    On another note, I think I'll resize the board slightly to the same size as the DAC to allow it to be 'stacked' on top.
    Last edited by fordgtlover; 29-10-2008 at 10:44.

  10. #260
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,258
    I'm BigBobJoylove.

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    Quote Originally Posted by leo View Post
    I didn't expect my thread to be so popular
    Over 19,000 views and counting.

    Lounge:
    Samsung QE65QN80F 65" QLED TV
    Echo Link streamer
    RME Audio ADI-2 FS (AK4493) DAC
    XMOS DSD Async
    Emotiva A2+ power amplifier
    Neat Motive SX1 speakers
    Van Damme 4.00mm tour grade speaker cable
    Nakamichi Fanlock banana plugs
    Chord Clearway XLR interconnects
    Audioquest Crimson USB interconnect
    QED Quartz Reference optical interconnect


    Studio:
    2022 MacBook Pro 14" M1 Pro 10/16/16/16
    SMSL DAC
    Modified Fosi P4 preamp
    Adam Audio T5Vs
    Fenton 10" active sub
    Roxel RBS 300s
    Several valve preamps

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