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Gamma-2 (γ2) DAC Thread - Page 9

post #121 of 2085
7/3/09 at 10:59am
Thanks to all those who joined... we now have a good sized prototype team. Over this weekend I will try to tie up any loose ends with the PCB layout, create a BOM, and move forward with the program.
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post #122 of 2085
7/3/09 at 11:02am
Quote:
I meant over the course of several months
So I did I.
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post #123 of 2085
7/3/09 at 11:13am
Will we be required to use our existing Y1 boards or can we order the unbroken pcbs and build the whole thing from scratch(this is what I was thinking of doing)?

Yea I have some trouble getting my solder pen to start flowing sometimes. It says on the side of the pen that they have a shelf life of 2 years. I'm definitely gonna try out the other methods you guys have suggested.
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post #124 of 2085
7/3/09 at 11:20am
Quote:
Will we be required to use our existing Y1 boards or can we order the unbroken pcbs and build the whole thing from scratch(this is what I was thinking of doing)?
Either way is fine, there are no "requirements".
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post #125 of 2085
7/3/09 at 11:21am
Quote:
Originally Posted by digger945 View Post
Will we be required to use our existing Y1 boards or can we order the unbroken pcbs and build the whole thing from scratch(this is what I was thinking of doing)?
You can do as you wish. It would be neater if you don't have to re-join the broken-apart γ1 halves.
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post #126 of 2085
7/3/09 at 11:32am
Actually I would like to do both.
Build the Y2 and join the existing Y1(I already have) to give an idea of how it works for those who want to "upgrade", and then assemble a fresh unbroken Y1 board to mate to the new Y2 for a complete assembly to go into the new case you mentioned on the first page(or whatever case we decide to go with).
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post #127 of 2085
7/3/09 at 12:08pm
No need, we already know "how it works".

In fact there are pictures of one of the handful of boards I stuck back together posted in the PPA thread.

http://www.head-fi.org/forums/attach...av2.y1lite.jpg
(that is how the USB jack ended up on the "inside" of the board )
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post #128 of 2085
7/3/09 at 7:56pm
what exactly does "rejoining" broken-apart gamma 1 boards mean?
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post #129 of 2085
7/3/09 at 8:06pm
Quote:
Originally Posted by oneplustwo View Post
what exactly does "rejoining" broken-apart gamma 1 boards mean?
The γ1 board is really two boards, the USB board and the DAC board, but they are supplied as a single piece with a groove down the middle, so you could break them apart (and then after assembly, plug them into each other to slide into a Hammond 1455C80x case).

But the γ2 is designed to plug into the one-piece γ1 board (not broken apart), and to fit a Box Enclosures B2-080 case. If you have a γ1 that has already been snapped apart, then they need to be joined back together to work with the γ2. This is necessary because the boards are only supported by their edges in the case slots. Without mechanically joining the γ1, it could "sag" inside the case or otherwise become rattly and misaligned with the panel cutouts.
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post #130 of 2085
7/3/09 at 8:38pm
gotcha. i had read the earlier post about rejoining but wanted to make sure there wasn't any signal or ground connections that needed to be made as well.
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post #131 of 2085
7/4/09 at 1:35am
Just submitting my order for y1 boards and bits now. This is exciting!
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post #132 of 2085
7/5/09 at 7:31pm
Post #2 has been updated to v0.12. This will be the version we go to prototype with.
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post #133 of 2085
7/5/09 at 10:13pm
I lollered at MisterX's "Gamma extra version "

Can mine be Quadraphonic?
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post #134 of 2085
7/6/09 at 10:07am
Boards have been ordered for the prototype team.
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post #135 of 2085
7/6/09 at 10:57am
Guys and gals, don't use the OPA2365 unless you're ready to perforate your eardrums (especially for headphone users) at every power on and off.
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