Dummies Guide to Pi2AES! Throw away your PC or laptop.

Discussion in 'Digital: DACs, USB converters, decrapifiers' started by purr1n, Jan 29, 2020.

  1. GoldenOne

    GoldenOne Friend

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    Coax/BNC > AES > Optical iirc from MK's measurements (i've not compared all outputs of the device atm).
    I'm using an ifi ipower 5v
     
  2. Yethal

    Yethal Facebook Friend

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    @Michael Kelly have you considered having the Pi2AES added as a Roon Ready device? Pi2AES works absolutely fine with Roon right now but certification would allow it to display a nice icon in zone settings like Allo devices do.
     
  3. Michael Kelly

    Michael Kelly MOT: Pi 2 Design

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    I have not, but that's more a lack of knowledge than anything else. I am officially a roon developer and as such can run it on my own system for test.

    For now it is not something that we could invest the time into doing. But with the all-in-one it's possible that we would offer some prepared images including a roon ready end point based on ropieee. Then we would just have to see what certification requires and what value it brings.
     
  4. Yethal

    Yethal Facebook Friend

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    Aside from the icon it'd also allow Roon to load some preset configuration specific to the device instead of loading a generic one. This would mostly be a convenience feature though, Roon works fine with Pi2AES using generic config.
     
  5. Michael Kelly

    Michael Kelly MOT: Pi 2 Design

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    That is what we measured, but be aware the difference from BNC/RCA versus XLR is almost indistinguishable. Optical though has measurabley higher jitter.
     
  6. Pancakes

    Pancakes Friend

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    @Michael Kelly if you could clear up some confusion for me.

    I've read every page of this thread and as far as PSUs, I've seen people using various voltages (12v-24v) to the Pi2AES or just 5v to the Pi board (seemingly no power to the Pi2AES board). From what I can see, you can safely do either of the following:
    5V to just the Pi board
    24V-48V to just the Pi2AES board
    Is this correct?

    I'm currently using the Meanwell but looking at getting a LPS instead.
     
  7. rlow

    rlow A happy woofer

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    You either do the 24-48v on the Pi2AES board, or you pull the jumper pin and then you can seperately power the RPi board with 5v, in addition to also using the other 24-48v supply in the Pi2AES board. But you can’t power the full thing with only with a 5v supply (unless you hack it and feed the Pi2AES directly via the pins, but this is dangerous as you’re going around the protection).
     
  8. Michael Kelly

    Michael Kelly MOT: Pi 2 Design

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    If you download the HW reference manual from our web site there is a block diagram for now to power the board. It might make it easier to understand.
     
  9. Pancakes

    Pancakes Friend

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    Thanks. I decided to take the path of least resistance and ordered a 24V LPS that someone referenced in one of the other threads.
     
  10. stevej

    stevej New

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    @GoldenOne I see you have a SMS 200 Ultra, do you also have the SPS-500 PS? If so have you tried powering the Pi2AES with the SPS-500?
     
  11. GoldenOne

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    I did actually run the pi2aes with the SPS500 for a bit as MK confirmed that 19v works fine (and indeed it did).

    I haven't done any objective testing as to whether or not it made a difference though.
     
  12. stevej

    stevej New

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    @GoldenOne I’ve been considering purchasing the SPS-500 since a review I read indicated a substantial improvement over the Meanwell SPS but have been holding off since it was only one data point.
     
  13. GoldenOne

    GoldenOne Friend

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    Unfortunately I don't currently have the meanwell PSU so can't test that specifically. But I can try a couple different 5v PSU's as well as the SPS500 @ 19v and see if there are any measureable differences, i'll sort that over the next couple days and let you know
     
  14. stevej

    stevej New

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  15. Pancakes

    Pancakes Friend

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  16. Noodlz

    Noodlz Almost "Made"

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    @Pancakes so does that mean this LPS works with the Pi2AES, in place of (replacing) the meanwell power plug? Still waiting for my Pi2AES but wondering if i should just buy this as well lol
     
  17. Biodegraded

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    2.5 vs 2.1 strikes again. The right-angle adaptor is 2.1mm in, 2.5 out so that it can be used with the Pi2AES's 2.5mm socket. At the risk of adding further confusion: the power supply linked above, model DFU240050F1121, indeed has a 2.5mm plug - but if you want to save space by using the Pi2Design-supplied right-angle adaptor, there's an equivalent version with a 2.1mm plug, which is model DFU240050D3030.

    Or find a 2.5 to 2.5 right-angle somewhere...
     
  18. Michael Kelly

    Michael Kelly MOT: Pi 2 Design

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    As of a month or so ago we have been shipping a straight and right angle 2.1 to 2.5 adapter with every order. Even if you don't order the meanwell. But, unless your psu has a 2.1 plug, you don't need an adapter.
     
  19. Pancakes

    Pancakes Friend

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    Yup, works fine. I haven't done any comparisons between them though. Just bought it to smack down some nervosa.
     
  20. Pancakes

    Pancakes Friend

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    Not quite. It fits just fine, it's just not snug. If you look at it wrong, the connection may or may not be go bad and you lose power.
     

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