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  1. Lifthanger

    Cavalli EHHA Embedded Hybrid Headphone Amp

    ok I checked it and the sinks are too small too. I'll solve this when I find some time next year. good luck with your build :).
  2. Lifthanger

    Cavalli EHHA Embedded Hybrid Headphone Amp

    the same thing happened to me this summer. My kit was also the same age as hollands. I didn't check the heatsinks yet, but there's some wrong and missing resistors.
  3. Lifthanger

    How much of an impact does the ground cable make / Why are some Interconnects and HP cables made with copper grounds?

    Yes, I didn't want to discard that. Just wanted to prevent someone from using a really bad wire for ground and 99999 silver for signal :).   Quote:
  4. Lifthanger

    How much of an impact does the ground cable make / Why are some Interconnects and HP cables made with copper grounds?

    don't know about the balancing of sound. but for the electrons both wires matter equally. transducers are current driven. and current always has to travel through both wires. With audio signals it's also safe to assume, that half the current goes through the ground wire first.
  5. Lifthanger

    Tweaking a CK²III

    maybe you could post a link to your bom, for comparison. And I'd also like to know if it's possible to lower gain below 4.1 without problems.
  6. Lifthanger

    Modified M2tech Hiface Units

    jkeny I was following your thread at diyaudio and your quest to isolate usb. you could try to get a pci-usb controller card and mod it with its own psu, to shut out power from the pc. could even shield the thing. Just something to think about.. you sound like you could make something like...
  7. Lifthanger

    Going to RitDye my Cowon D2...

    put your hand on the tool... the WRENCH wonder if anyone knows where that was from. Good luck.
  8. Lifthanger

    Cavalli EHHA Embedded Hybrid Headphone Amp

    Quote: Originally Posted by Horio Thanks Lifthanger. So the revised calc: Vdrop => (17.8V-0.6V)-12.6V = 4.6V P to dissipate => 4.6V x 2A = 9.2W Looks like that puts me over, so I'd need another heatsink option or perhaps two supplies. no problem, I'll run into the same...
  9. Lifthanger

    Cavalli EHHA Embedded Hybrid Headphone Amp

    it's 12.6V x squareroot of 2 ( 1.414) = 17.82V
  10. Lifthanger

    Balanced DIY DAC?

    Marcus_C, I'm certainly no authority on this matter. And my onboard coax out could be the reason of the difference. But the gamma2 with asrc sounded much better than my opus+ballsie combo. In fact listening to the gamma2 (+mini3+hd595) was the first time I was really happy with my setup. There...
  11. Lifthanger

    Balanced DIY DAC?

    Quote: Originally Posted by m11a1 I'm actually building a gamma2 at the moment but I don't ever recall it having the capability to have balanced outputs...could you elaborate on this please? Nevermind, I just discovered the magical world of the search button. . the twisted...
  12. Lifthanger

    Balanced DIY DAC?

    the gamma2 has balanced out , but you lose filtering and buffering from the output stage. has been discussed in the thread, but I'm not sure if anyone tried this yet. I wanted to try a ballsie behind the gammas balanced outs but I'm missing an amp to try. Also would be interesting to know, if...
  13. Lifthanger

    Cases and enclosures: What are the constraints?

    thanks a lot. here they are called nietmuttern,in case anyone wonders . Got some on the way. Looking forward to this case!
  14. Lifthanger

    Cases and enclosures: What are the constraints?

    Jaypee, the M3 enclosures are very nicely done. In the next days, I'll try to do a case from sheetmetal, too. My main problem in the past was getting the screws to hold. what are those shells called?
  15. Lifthanger

    AMB (Ti Kan) Appreciation Thread

    Thanks AMB! For pushing the envelope of DIY audio.
  16. Lifthanger

    Cavalli EHHA Embedded Hybrid Headphone Amp

    Hi fellow EHHA builders. My GJA kit arrived months ago, but I was out with a broken clavicle. The sigma22 is done now. But it only reads 28.5V unloaded. Is this common? Used the parts for the 30V build.
  17. Lifthanger

    The LCDuino-1 I/O processor

    what did you do? my wallett is in tears... I'm happy about this project though . Thanks alot!
  18. Lifthanger

    B22/Active Ground Query

    I'm sorry, but at this point I'm also out of here. Had a nice laugh though with the ground potential stuff. sorry for the douchy question though. I'd like to see one more drawing though: the B circuit and what would happen at the point the caps are only 90% charged. at this point the...
  19. Lifthanger

    B22/Active Ground Query

    Quote: Originally Posted by Koyaan I. Sqatsi Ground[...] It has no potential of its own. Any potential must be between it and some other singular point. k could you explain this please? Obv. I'm no expert and this sounds new to me.
  20. Lifthanger

    B22/Active Ground Query

    Since the σ22's output impedance is much lower than even the best low-ESR large aluminum electrolytic capacitors, having wide bandwidth allows the σ22 to respond to fast changing current demands better than a large capacitor (or a bank of capacitors) ever would. this is a quote from the...
  21. Lifthanger

    B22/Active Ground Query

    my money is on nothing will . but this thread provided some nice insights into the design. also made me think about some more which is nice.
  22. Lifthanger

    B22/Active Ground Query

    I'm far from being an expert, but seeing that V- and V+ are DC, there won't be any current through the caps. Say it would make it through the caps: the output of the sigma22 has very very low impedance. which means the current will leave/enter this circuit through the voltage rails. I don't...
  23. Lifthanger

    B22/Active Ground Query

    Quote: Originally Posted by Koyaan I. Sqatsi First, the claim that the active ground results in load currents not going to ground is simply incorrect. nope
  24. Lifthanger

    Gamma-2 (γ2) DAC Thread

    the gamma2 can use all three input options. maybe both the rca and mini can be used when driving high impedance loads. but that's a thing I'd like to know myself, for other projects.
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