Gamma-2 (γ2) DAC Thread

[m1abrams]

Quote:

Originally Posted by madstudio /img/forum/go_quote.gif Hi guys, i searched and tried to read 92 pages to find out what do I need if I want to use Y2 with just SPDIF (preferable AES) input but I'm still not sure about. So, the Q is : do I need Y1 board for that? Is it possible to make it work with AES input standalone? Thanks

You need the Gamma1 board, you may be able to leave out some of the usb parts but those probably not amount to much in the way of cost. The Gamma2 board take only I2S input so you can leave out the Gamma1 if you provide I2S and the proper power (Gamma1 also provide the power).

 

[madstudio]

thanks, so Y1+Y2 or spdif to I2S + PSU+ Y2 is way to go? Am I right? Do you know some good source for spdif (Aes) to I2S?

 

[Beefy]

Quote:

Originally Posted by madstudio /img/forum/go_quote.gif Do you know some good source for spdif (Aes) to I2S?

Well, the Gamma1 does a good job......

 

[amb]

Quote:

Originally Posted by madstudio /img/forum/go_quote.gif Hi guys, i searched and tried to read 92 pages to find out what do I need if I want to use Y2 with just SPDIF (preferable AES) input but I'm still not sure about. So, the Q is : do I need Y1 board for that? Is it possible to make it work with AES input standalone? Thanks

How about reading the official websites?
The γ1 Modular Miniature DAC
The γ2 Compact High Performance DAC

 

[leopoldiy]

HI,
y have recently build an AMD gamma2 Dac, and i purchase from AMB a M3.in a same boxe,I would directly plugg the dac to the M3,About C20 and C26 on gamma2, can I replace them by 3.3UF condensator.
I have mundorf supreme silver/gold 3.3uF in stock and i want use it.
thanks

 

[MisterX]

Did you check to see what the Y2 parts list page has to say about using 3.3uF coupling caps?

 

[leopoldiy]

Quote:

Originally Posted by MisterX /img/forum/go_quote.gif Did you check to see what the Y2 parts list page has to say about using 3.3uF coupling caps?

Actualy I use, a 470uF capacitor to drive directly my headphone with an impedance of 150 Ohm.
But if i drive directly the m3 Amp, can I use a 3.3uF capacitor.

The inpedance of the m3 is 47KOhm.

fc=1/(2x Pi x R x C)
fc=1/2xPix47000x0.0000033)
fc=1.02614406 hz

no ???

 

[amb]

I think you just answered your own question.

How would a Mundorf cap fit on the board (or in the Box B2-50 enclosure) is the other question.

 

[GWorlDofSPACE]

Quote:

Originally Posted by amb /img/forum/go_quote.gif I think you just answered your own question. How would a Mundorf cap fit on the board (or in the Box B2-50 enclosure) is the other question.

Whit a good shielded cable you could connect a good MKP to the board and mount the cap on the B2...eclosure?????

 

[leopoldiy]

Quote:

Originally Posted by amb /img/forum/go_quote.gif I think you just answered your own question. How would a Mundorf cap fit on the board (or in the Box B2-50 enclosure) is the other question.

lol, yes a mundorf cap don't fit on the gamma 2 board.

I put in a same box, Sigma11--->gamma2 + sigma11--->M3 + mundorf + Audio Volume Relay Attenuator.

thanks

+

 

[Beefy]

Quote:

Originally Posted by GWorlDofSPACE /img/forum/go_quote.gif Whit a good shielded cable you could connect a good MKP to the board and mount the cap on the B2...eclosure?????

Risky. Because you can't connect up your source to any other DC coupled amp, unless it has caps installed.

 

[GWorlDofSPACE]

Quote:

Originally Posted by Beefy /img/forum/go_quote.gif Risky. Because you can't connect up your source to any other DC coupled amp, unless it has caps installed.

If you use big MKPs, maybe 10uf then it should go, not?

 

[Beefy]

I'm sorry, I don't understand what you mean.

What I am saying is that regardless of the cap you use - size, type, doesn't matter - it is a bad idea to not have it in the DAC. Because while it will be fine with amps that do have a cap at their input, many do not.

Connecting your DAC without a cap to an amp without a cap could cause serious damage to the amp or any headphones connected to it.

 

[GWorlDofSPACE]

Quote:

Originally Posted by Beefy /img/forum/go_quote.gif I'm sorry, I don't understand what you mean. What I am saying is that regardless of the cap you use - size, type, doesn't matter - it is a bad idea to not have it in the DAC. Because while it will be fine with amps that do have a cap at their input, many do not. Connecting your DAC without a cap to an amp without a cap could cause serious damage to the amp or any headphones connected to it.

We have a misunderstanding here. I did not tell that I would use the DAC whitout caps! I wrote that I could use an extension wire for MKP caps and connect it to the pins of the previous CAP.

 

[Beefy]

Oh, I get you. You want to mount the caps outside the case. I saw the B2, and thought it was a typo for B22 amp.

Yeah, that still seems like a bad solution to a problem that doesn't actually exist.