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Old 1st December 2002, 11:52 PM   #11
halojoy is offline halojoy  Sweden
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IT IS LIKE I AM WATCHING THE LATEST MOVIE


who needs a Cinema
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Old 2nd December 2002, 12:49 AM   #12
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Default Re: Part 2: Aleph-X

Quote:
Originally posted by jwb
Here are some parts (some reposted) from my next Aleph-X. This is the exciting rectifier!
Whoa! I nearly fell off my chair!

I think I'll have to post some pics of my 50kg 50wpc class A. Nearly finished, was working on the bias servo's last night.
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Old 2nd December 2002, 01:10 AM   #13
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I'm not building anything big right now, just few gainclones (or should I say Gaincards?)
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Old 2nd December 2002, 01:32 AM   #14
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Inverted gainclones...
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Old 2nd December 2002, 07:40 PM   #15
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Nice heatsinks, Al!

Jake
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Old 2nd December 2002, 07:50 PM   #16
skaara is offline skaara  Slovenia
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jwb: very nice
what dac chip is used in the dac on pics you posted?
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Old 2nd December 2002, 08:10 PM   #17
jwb is offline jwb  United States
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Quote:
Originally posted by skaara
jwb: very nice
what dac chip is used in the dac on pics you posted?
Crystal CS43122
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Old 2nd December 2002, 08:22 PM   #18
tom1356 is offline tom1356  United States
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The front baffels to my future line arrays. I'm calling them Cigar-dreams because I can't afford a pipe.
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Old 2nd December 2002, 08:35 PM   #19
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Default small-smaller-smallest

My inbetween-projects smallest DAC I ever soldered.
It is a PCB published by Elektor and should be stuffed with a UDA1351H chip that after the prototyping never came into production.
I use the UDA1350H which is pincompatible. It is very small as you can see. The chip is a QFP44 package SMD part which of course is mounted on the copper side.
Contrary to the non os religion it is a 20 bit 32/44/48 kHz 256 FS oversampling bitstream chip.

To be clear: is has everything onboard. SPDIF receiver, DAC and analog stage. Power supply is 3V. Sound quality I can't really tell yet. First one is running and sounds good on my test amp/speakers ( I didn't expect that to be honest ). Didn't compare it to other gear (yet). Power supply is 3V. For those who are interested, the layout is on : http://www.elektuur.nl/dl/dl.htm

Look for the mini audio DAC in the juli/august 2002 issue. It's practically impossible to find this chip in small quantities however.
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Old 2nd December 2002, 09:03 PM   #20
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Quote:
Nice heatsinks, Al!
Not bad, not bad. (and thats just one cut in half!)

You up for a drink this weekend, Jake?
Calling all London and SE DIYers

Looking good so far, Tom How much will it set you back for that many drivers though?
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