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Old 21st June 2004, 06:44 PM   #11
kafka is offline kafka  Poland
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Hm... OPA548 is a good idea. I have few of them. The E/S pin is very interesting, but I have one problem. Will it be wrong if I disable + and -15 in PGA2310 and left digital +5??
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Old 21st June 2004, 07:44 PM   #12
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Hm, I have no idea actually. I don't think anything will go wrong, the thing just won't work, but that's probably what you intend to make it do when you cut the power to it .
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Old 23rd July 2004, 07:44 PM   #13
veteran is offline veteran  Poland
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->kafka
There wont be any problem if you leve +5V for digital section od pga2310.

If somebody would like to cut the power from pga2310 he can use a LM317/337 supply driven with a transistor (so you can controll it with TTL signals).
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Old 29th July 2004, 08:29 PM   #14
VT67 is offline VT67  Belgium
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Hi y'all

Just finished my prototype of the digital volume control unit. It's based on Elektor's "The Audio Link". I used a PGA2311 instead of the PGA2310. In the attached pic you can see it right beside my NIGC prototype.

Happy listening

Walter
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Old 29th July 2004, 09:09 PM   #15
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wow, GeWa, they both look very beautifull! how's the sound?
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Old 29th July 2004, 09:28 PM   #16
VT67 is offline VT67  Belgium
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The NIGC is a basic kit from BrianGT. It's playing for about two weeks now and I must say that it sounds surprisingly good. The toroid is the most expensive item of the whole amplifier, so value for money taken in to acount not bad at all. The digital volume control sounds better than my passive preamp (blue Alps pot) but I still didn't had the opportunity to do some extensive listening.

Attached a pic with the front view of the thing.

Happy listening

Walter
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Old 6th August 2004, 03:48 PM   #17
pepepe1 is offline pepepe1  Poland
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what about my PGA2310 preamp? ;-)
http://www.pepepe1.webpark.pl/pga2310.html[/url]
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Old 6th August 2004, 05:44 PM   #18
VT67 is offline VT67  Belgium
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Hi Pepepe

Very nice looking indeed. Were did you got the housing from?

Walter
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Old 6th August 2004, 06:16 PM   #19
pepepe1 is offline pepepe1  Poland
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old Sony CD player + handmade alluminium front. As cheap, as possible
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Old 6th August 2004, 08:54 PM   #20
VT67 is offline VT67  Belgium
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epepe1

Is that front realy handmade?
Excellent job my friend.

Walter
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