[tomb]

Hey!! Many thanks to you, too, Nate. We wouldn't have any boards at all - without your good work.

 

[headphonejunkie]

Hi Nate
On the board I am going to buy I have some panasonic fc 1800 uf 25V caps. Do you think these will work for c7's?

 

[NeilR]

Quote:

Originally Posted by headphonejunkie Hi Nate On the board I am going to buy I have some panasonic fc 1800 uf 25V caps. Do you think these will work for c7's?

C7 sees the entire rail voltage, which most people set to 24-27V. You should use a 35V cap, unless you like your parts living on the edge

 

[headphonejunkie]

Good point. I will have to get myself some other caps. Does anyone think blackgates in this position could make a difference?

 

[NeilR]

Quote:

Originally Posted by headphonejunkie Good point. I will have to get myself some other caps. Does anyone think blackgates in this position could make a difference?

C7 and C2 are both in the signal path and would benefit from BGs more than any of the other caps. There have been a lot of discussions about this here and on diyforums.org. For C2, you can get away with a lower voltage cap; it only sees a couple of volts. Pete specified 16V, I think for this position but if you are daring you might get away with 6.3V, which will put you into a larger value BG that fits the smaller C2 footprint.

For C7 you want 470uF for high impedence loads, less if you want to optimie for lower impedence phones. For C2, 100-200uF have been suggested as a minimum.

 

[headphonejunkie]

Thanks. I will have to see about getting some. Where can I pick some up? Do you know of any good online stores?

 

[NeilR]

www.partsconnexion.com

 

[headphonejunkie]

Thanks.