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eXStata DIY Electrostatic Amp for Intermediate DIYers

Feb 23, 2010 at 6:24 AM Post #2,401 of 2,970
Very nice! That is one sexy beast, congrats Al! I thought I would post my musings over in the headphone amp area. Actually it was a somewhat organized review.
I suppose I could add a few more thoughts here though. In short I have been listening to this amp non-stop since I put the headphones on last friday, it is unhealthy.
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My favorite parts of this setup are... EVERYTHING, heck I am greedy! The sound to me is exactly what I am looking for, not lacking in any area whatsoever. I am addicted to the echoes, the textures, the around the head sound. Anyway, it has my attention
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Thanks Alex!

Edit: Very nice casework Mac! Looking good!
 
Feb 23, 2010 at 6:34 AM Post #2,402 of 2,970
Quote:

Originally Posted by macm75 /img/forum/go_quote.gif
Have not listened to my eXStata for a week. It's been apart waiting for a permanent box. Finally finished minutes ago (forgot to put the knob on). I tested the voltages again - look good. Now I can finally start listening.


That's a pretty case, but I'm curious why did you decide to put the inputs on the front?
 
Feb 23, 2010 at 2:12 PM Post #2,404 of 2,970
Yes, finding a better case for that proto won't be hard, and that ends me making points about recycling computer gear for casing. You can always get a NABU, which is a self contained potty training for DIY casing.

Glad some folks are catching up - there are a few more usual suspects out there, along with another proto I sent to a good home... just a matter of time.

Of course, waiting for the big guns (Nate, Marc), who have other priorities in the shorter term, but seems like we are rounding out this group pretty well.

eXStatA for the win. Thank you, Dr. Cavalli.
 
Feb 23, 2010 at 2:27 PM Post #2,405 of 2,970
Quote:

Originally Posted by pabbi1 /img/forum/go_quote.gif
Of course, waiting for the big guns (Nate, Marc), who have other priorities in the shorter term, but seems like we are rounding out this group pretty well.


I'll get there dangnabbit, getting close now, just fighting through the complexities of trying to do a world voltage capable amp which is probably going to end up not happening.
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I'll be heavy into chassis fab this week and hopefully ordering panels tomorrow.
 
Feb 23, 2010 at 2:36 PM Post #2,406 of 2,970
Quote:

Originally Posted by pabbi1 /img/forum/go_quote.gif
Manana when I have to disassemble the rack for the new parts. I'm actually still warming it up from shipment, as it is still cold to the touch.

Oh, and here is a pic of the insides... I'll be taking an exhaustive series this weekend just to see how many ways I can violate the warranty.
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Thanks Al. Is it just a lift off top, or is it more complicated than that? Mine on the Shigaclone will have to be different since I need to use the magnetic puck that comes with the transport, but I'd like to get close to a cross between the Ayon and Mitchell Engineering's prototype CDP from years ago.
 
Feb 23, 2010 at 2:58 PM Post #2,407 of 2,970
Quote:

Originally Posted by HeadphoneAddict /img/forum/go_quote.gif
That's a pretty case, but I'm curious why did you decide to put the inputs on the front?


It is a combination to keep the wires short and the physical location of my amp/CD on/under my nightstand/bed wrt the cable I have. Actually, and I just thought of it due to your question, best would have been right side panel.
 
Feb 24, 2010 at 12:45 AM Post #2,411 of 2,970
The two important things are the pitch and diameter.

Diameter should be 25mm or smaller.

The pitch can be either 10mm or 12.5mm because there are two sets of pads on the board in an attempt to accomodate this very problem.
 
Feb 24, 2010 at 12:56 AM Post #2,412 of 2,970
Quote:

Originally Posted by ktm /img/forum/go_quote.gif
C1/C2 450v 220uF caps are on backorder for 3 months.
LKX2W221MESA at similar ratings a good alternate?


Why not try the Nichicon UVY series? Same as the VK, but rated for higher temperatures for less than a dollar more......

https://ca.mouser.com/Search/Product...47-UVY2W221MRD
 
Feb 24, 2010 at 1:52 AM Post #2,414 of 2,970
Quote:

Originally Posted by ktm /img/forum/go_quote.gif
in stock, I think we have a winner! Thanks.


Hold up - way too much! Why not this ($4 - it's what I used)...
search 647-LKX2W221MESA45
 
Feb 24, 2010 at 2:16 AM Post #2,415 of 2,970
I wasn't sure that the snap in model would fit, and I figure Alex chose the cap he did for a good reason.

What do the data sheets say with respect to leakage, ESR and ripple rejection?
 
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