Recent content by 4season
  1. 4season

    We Got Ti Kan (AMB) an HD800!

    #137 4season paid!
  2. 4season

    We Got Ti Kan (AMB) an HD800!

    Count me in too!
  3. 4season

    Gamma-2 (γ2) DAC Thread

    Quote: Originally Posted by ShinyFalcon Are you powering your y2 using USB or the DC jack? Yes. I use whichever one happens to be handiest at the moment.
  4. 4season

    Gamma-2 (γ2) DAC Thread

    This is probably really old news to everyone else, but changing my AC brick had more effect on the sonics than expected: The Motorola cell phone charger (5V, 800 mA, switch-mode) sounded the worst, giving me a rather lean tonal balance. My Apple iPhone charger (via USB) seemed to give me...
  5. 4season

    Gamma-2 (γ2) DAC Thread

    For no particular reason, here are photos of my completed Gamma 2!
  6. 4season

    Gamma-2 (γ2) DAC Thread

    Quote: Originally Posted by sergery Interesting, I have been wondering about the differences in sound with the different cap configurations as well. Could I coerce you to go into further detail? It will help me plan my build, I am sure others are curious as well. Of course I may just...
  7. 4season

    Gamma-2 (γ2) DAC Thread

    Quote: Originally Posted by sergery So it is a fairly audible benefit to your ears? Assuming tight and bright is good at the expense of lush. Yes, I think so, but it drove me to remove the two small film bypass capacitors at the outputs (C19, C25), and so far I think it sounds...
  8. 4season

    Gamma-2 (γ2) DAC Thread

    I listened to mine without ASRC for about a week (coax input only, hooked up to my NAD CD player) and it wasn't bad at all. Smoother and more euphonic, I thought. Even when used in the "B" filter setting, with frequency response down at 14 khz, I found it pleasant, and when listening to my...
  9. 4season

    Gamma-2 (γ2) DAC Thread

    Ugh how embarrassing: I've been fussing with electronics since my teens, and here I go making one rookie mistake after another with my DAC Turns out I had a solder bridge on the DAC between pins 1 and 2, which I missed under the microscope because I was only looking straight down onto the...
  10. 4season

    Gamma-2 (γ2) DAC Thread

    Ouch, you're right, I had U9D and U3 swapped. Corrected that, and now I get white noise and lots of it. Audio output sounds like white noise, but looks like semi-random square waves pulsing a couple of times a second. 3.3B power supply is also pulsing like that and looks pretty noisy. Maybe I...
  11. 4season

    Gamma-2 (γ2) DAC Thread

    Here's a couple of pics of my Gamma 2, hope you folks can see an easy and obvious fix that I keep missing Besides my Weller WPTCN soldering station, I also have a new 850B hot air setup that I'm still learning to use. The oscillator seems to be putting out a decent square wave around 25 mhz...
  12. 4season

    Gamma-2 (γ2) DAC Thread

    Still can't get the ASRC chip (SRC4192I) to work! If I bypass it, all is good. As far as I can tell, U3, R1 and X1 are okay, and all voltages are pretty close to spec. I've purchased 2 SRC4192s from Mouser on two different occasions-what are the odds of my actually getting two defective ICs? Is...
  13. 4season

    Gamma-2 (γ2) DAC Thread

    Quote: Originally Posted by nightanole Seems like another person is thinking B stands for BEST It seems that my preferred setting is currently causing a rolloff at around 14 khz! Will have to re-evaluate once I have the new ASRC chip installed. For now, mine sounds best with...
  14. 4season

    Gamma-2 (γ2) DAC Thread

    I've got the Gamma 2 (mostly) up and running! My ASRC was no good, and until it's replacement arrives, I've got it bypassed. Even so, it seems like quite an improvement over the Gamma 1, or the analog output of my old NAD 502. Even without upsampling or the low-jitter crystal, redbook audio...
  15. 4season

    Gamma-2 (γ2) DAC Thread

    Touched up every single solder joint on the Y2, and now the anti-clipping switch doesn't cause the light to go red anymore. Still no output from the Y2 though, so I dug out my 100 mhz oscilloscope to see what, if anything, it might tell me. Feeding it signal via the SPDIF coax input. X1: I...
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