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Kerry

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Posts posted by Kerry

  4. Group Buy - Digital Attenuator (Kevin Gilmore)

    in Do It Yourself

    Posted

    1 hour ago, Beefy said:

    I actually built and installed a pair of these in a balanced amp recently. There's absolutely nothing wrong with the board on a technical level.

    The problems I had that might have been solved with the newer revisions were size and software. This first revision are physically way bigger than the second. And I'm not a programmer, so I rely on grabbing code provided by others, and I couldn't find code that works perfectly with a pot. Kerry's all-in-one code from the other thread mostly gets there, but it opens up at full volume on power up - this is a bit dangerous, and I'm not nearly clever enough to work out why. I believe the code for the second revision was a lot more complete. I have the LCDuino codebase, but haven't been able to get it to work.

    But if you have the space, and you have code that works for you, then this first revision board should be AOK.

    I'll have some time in March to look at the issues you were having.  My setup doesn't open up at full volume.  

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    • Popular Post

    Kerry's got a new Co... Eksonic

    in Headphone Amplification

    Posted

    We’re launching a new company – Eksonic – along with our new amplifier called Aeras.

    820648050_EksonicLogo.png.b11f1cca08c4672fa8b54e759de61bc4.png    

    Launch-Aeras.png.e0c133cc8560f997d4e76c0ed71d4b12.png

    Launching an audio company is something I’ve had in the back of my head for many years and I’m proud to be able to bring a passion to market.

    I've been building my own version of the DIY T2 for quite some time now and have long hoped to capture the spirit of the beast in a smaller single chassis design that's more accessible to many. We think we've accomplished that with the Aeras. Aeras is the result of endless hours of circuit design and analysis, brainstorming and many iterations of prototyping and testing.  Our initial users have had great things to say about this new amp.

    We’re going to be launching the company formally at the NYC CanJam later this month.  We’ll bring our DIY T2 along with the Aeras so people can hear them side by side. 

    Launch-Aeras-T2-02.thumb.png.268b23f73bffb4b069f1c1bd306d0227.png

    361753460_LaunchT2-02.thumb.png.1195c9e4da8854ca38f13228c0ff167c.png

    Launch-Aeras-Back.png.52bdf444706e0f8bc21f53b755cbf874.png

     

    I hope to see some of you at the launch :) 

    • Like 56
    • Thanks 5

  16. The ultimate DIY? A Stax SRM-T2!

    in Do It Yourself

    Posted

    Not on a T2, but about 10 years ago I had a similar situation with an EL34 on a Blue Hawaii.  Spectacular lightshow from one of the tubes.  No harm done to the amp, so after replacing the offending tube, everything was fine.  I'd don't recall what brand tube it was, but either JJ or Mullard new issue.

    I haven't had any issues since then.

    Hoping all is fine, though it sounds like it is.

    • Like 1
    • Thanks 1

  21. digital attenuator

    in Do It Yourself

    Posted

    It's been a while since I looked at this, but I'm pretty sure there are just parameters you can set.  There should be some comments in the code for SPI vs I2C and you should set the version down to 1.0 or something like that.

    I don't have time now to really jump in deep to this, but good luck :) 

    • Thanks 1
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