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y1 gamma-1 DAC - Page 8

post #106 of 1537
12/5/08 at 6:17am
Depends how it's built.
The USB board does feature an optional optical S/PDIF output but it will not fit in the default case with a fully populated DAC board.
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post #107 of 1537
12/5/08 at 6:30am
You can use the usb board of the gamma1 as a USB-to-S/PDIF converter, and it will support both coax and optical output.

You can't directly use it with the DAC however, as the phono and optical jack on the usb board will interfere with parts on the DAC board.

If you wanted both the DAC and and USB/spdif conversion, well.. I'm not knowledgeable enough to trust myself to try undocumented configurations without supervision, but I think it may work if you off-wired some components or the board, set the USB board up for S/PDIF output, and installed U2D(and it's surrounding circuitry) so it can feed a I2S signal to the wolfson.
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post #108 of 1537
12/6/08 at 3:59pm
How does it work? Will I be able to send 5.1 sound from my PC to my home cinema receiver with the y1? I will of course use software compatible for this like power dvd, and if necessary build a y1 with just digital out
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post #109 of 1537
12/6/08 at 4:28pm
How it works is described in great detail here:

HeadWize: DIY Workshop > γ1: Full-featured modular miniature DAC
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post #110 of 1537
12/6/08 at 5:24pm
γ1 is a 2-channel stereo DAC. It doesn't do 5.1 stuff.
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post #111 of 1537
12/6/08 at 5:31pm
In the spirit of DDIY (Don't Do It Yourself), will the DAC chip be presoldered?
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post #112 of 1537
12/6/08 at 5:44pm
No presoldering will be offered initially. Our prototype phase found that the build was relatively straightforward, so I'll let everyone give it a shot first.
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post #113 of 1537
12/7/08 at 6:12am
HEADSUP! The γ1 front/rear panel set group buy sign-up phase is closing tonight. If you want to participate, act now.
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post #114 of 1537
12/12/08 at 3:27pm
Good News!
The γ1 production boards and parts are now available. See my post at headwize for more details.

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post #115 of 1537
12/12/08 at 9:17pm
Any Australians considering doing a digikey or mouser bulk buy? (Preferably someone known unlike me), cause an initial glance through the BOM shows that some items are ridiculously expensive from the Australian Farnell.

I believe one capacitor was even $11 a pop compared to less then a dollar from the states!
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post #116 of 1537
12/12/08 at 9:20pm
There is no chance the boards will go out of stock soon, is there?

I want this DAC, but I need to find someone to build it for me first.
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post #117 of 1537
12/12/08 at 9:59pm
Quote:
Originally Posted by xnothingpoetic View Post
There is no chance the boards will go out of stock soon, is there?

I want this DAC, but I need to find someone to build it for me first.
I am probably going to be building at least 2. PM me if you want..
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post #118 of 1537
12/12/08 at 10:26pm
Quote:
Originally Posted by Bismar View Post
Any Australians considering doing a digikey or mouser bulk buy? (Preferably someone known unlike me), cause an initial glance through the BOM shows that some items are ridiculously expensive from the Australian Farnell.

I believe one capacitor was even $11 a pop compared to less then a dollar from the states!

I am going to organise an Aussie Digikey or Mouser GB. Given that the PCM2707 won't be available until February, I'm not rushing.
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post #119 of 1537
12/12/08 at 10:45pm
I cannot imagine just how much time and effort that Ti has put into designing this DAC, compiling a BOM listing parts from 3 different sources, and all of the technical and how-to articles, complete with notes for multiple configurations/inputs.
I must not forget a custom CNC machined end panels group buy, and hard-to-find parts and PCB's direct from AMB audio shop, and all the daily post's to help people working on all sorts of projects big, small, complex and simple.
Thank you Ti for giving us this opportunity to build our own DIY Hi-end DAC, and for all of your help and contribution to this and other communities.

I really don't see how you do it all.
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post #120 of 1537
12/12/08 at 10:49pm
Don't forget to thank MisterX too, who codesigned this and was every step of the way with me. We exchange dozens of emails daily.
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