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Old 12th March 2006, 04:43 PM   #931
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I'm using ATI top and bottom panels (custom made with clear anodizing). I didn't like their fronts and back so I decided to make my own. I'm using here polypropylene panels (1/2" thick, used for floors in boats). It is very rigid and easy to machine. With a template I can cut one in less than a minute using wood router

There are only 4 screws needed to hold the whole chassis.

The bottom banel is reinforced with aluminum plate (4 x 5.75). That panel ads stiffness for transformer mounting, as well provides stops for both front and back so the alignement is simplified.

The two BG STD caps, needed in Patek supply, are press fitted into rear panel.
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Old 12th March 2006, 08:03 PM   #932
karma is offline karma  Canada
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wow that is nice is the Pateks case going to change also?

modern

http://www.atiresearch-anodized.com/
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Old 12th March 2006, 08:30 PM   #933
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Patek case stays the same, but I might develop cheaper line of monoblocks using those ATI panels, I really like them.
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Old 12th March 2006, 08:33 PM   #934
karma is offline karma  Canada
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nice ill be looking out for those
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Old 12th March 2006, 08:42 PM   #935
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Besides, that case is only for a cheaper Patek version. SE Patek is still available and its PS enclosure appearance matches the amp.
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Old 12th March 2006, 08:44 PM   #936
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Quote:
Originally posted by karma
nice ill be looking out for those

YOu need one of Peters New Design's. And the new set of cables.
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Old 12th March 2006, 11:26 PM   #937
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I have a several questions about DAC.
I have a green board.

Q1. The schematic shows that C5a and C5b are 15uF each.
I have only one place on the board marked C5 and Peter sent me two 10uF capacitors. what do I do?

Q2. Peter mentioned that he's sending me 33uF cap for C11 (instead of 47uF, which is ok). The schematic shows C11 being polar and Vishay (MKT1817) cap he sent me is not polar. What do I do?

Q3. From the pictures in this thread I see that there's something that looks like plastic right where the wires from transformer connects to the board. What is it? Where can I get it?

Thank you.

p.s. My DAC is 80% soldered. Now I need to connect transformer and buy an optical cable. Can't wait to listen to it ;-)
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Old 13th March 2006, 12:30 AM   #938
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Here the answers:

1) There are two of those caps on all-in-one board. Because of different layout, green board is using only one; 10uF is fine here as well.

2) Non polar cap can be used in place of polar cap without any problem. BTW, the 0.47u BG NX cap specified in a schematic (C11) is also non-polar.

3) Some guys like to use terminal blocks. I find them useless (for permanent installation) and don't recommend, soldering wires directly is better.

Terminal blocks are only good if board is to be frequently disconnected from the PS.
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Old 13th March 2006, 01:04 AM   #939
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Thank you Peter,

1. Great.

2. it is polar in the pdf file I have ;-)

3. Direct soldering it is ;-)

p.s. The AC socket that came with the kit has N, L and ground connects. The transformer has 1,2,3 and 4 connects. How do I connect them?

p.s.s. As I understand the transformer is AC/AC right?
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Old 13th March 2006, 02:02 AM   #940
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It's hard to advise without seeing the actual transformer. It may be a unit with dual primaries, in that case you connect them in parallel. The best is to find transformer manufacturer wiring diagram and see what they recommend. It is AC/AC.

Regarding the polarity in pdf file for C11: although BG NX caps are not polar, they still peforme better with a specific orientation in a circuit, I prefer short pin on +.
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