BUILD THREAD - A New Take on the Classic Pass Labs D1 with an ESS Dac - Page 56 - diyAudio
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Old 7th April 2013, 02:45 PM   #551
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Owen, you are my hero.

One of the channel was set to -1.65V.

Now both channels are the same. Thanks Thanks Thanks so much.
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Old 7th April 2013, 02:58 PM   #552
opc is offline opc  Canada
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Awesome

I'm glad we got it sorted!

Hopefully this will be one of the last steps towards your rather epic build. I've been checking in on your thread from time to time, and will continue to do so.

Cheers,
Owen
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Old 7th April 2013, 07:40 PM   #553
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Fantastic news! Glad to hear you're up and running.
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Old 7th April 2013, 11:01 PM   #554
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Owen : without your great design, sharing and support, I couldn't have this "epic build".

MisterRogers : thanks, still haven't test your balance > SE converter. Searching for a good and small PSU for it
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Old 7th April 2013, 11:04 PM   #555
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Quote:
Originally Posted by qusp View Post
hmm without the dac, thats even more confusing... yeah zener, thats the only regulated/exact voltage of that range left on the board without the dac connected. if its not the zener as Owen suggests i'm out of ideas of where such a voltage could even come from, unless its completely coincidence

yeah BPHK I remember you saying after last time that you wouldnt be connecting the dac till it was rock solid, glad you stuck with that
Haha, I can't forget the $400 lesson and check everything several times before turn on the power but still get a burnt 5V PSU on the NTD1
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Old 14th April 2013, 04:30 PM   #556
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So most off my amps have Zin=50k, would it be OK to use 1uf caps for C28-29 and C51-C52?
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Old 14th April 2013, 04:41 PM   #557
qusp is offline qusp  Australia
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the coupling caps on the NTD1 are no different from any other design, so yes most likely, though I would probably play it safe and go with 1.5-2uf. thats huge ZIN though, is that balanced? seems excessive

hey Mike, just read your message from last week, sorry I missed it, will shoot you an email tomorrow, about to hit the sack.

Last edited by qusp; 14th April 2013 at 04:43 PM.
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Old 14th April 2013, 05:26 PM   #558
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Just want to clarify this. I am using the D1 to feed the stats' amp which has a 50k volume pot. Yes, using balanced all the way.
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Old 17th April 2013, 09:13 PM   #559
Rolle is offline Rolle  Denmark
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Hi

Ok finally I received all parts for my build :-) Started some drilling today and mounted the mosfets and zfoil resisters to the heatsink. Used the keratherm pads from Qusb under the mosfets. I don't need to isolate the zfoil resistors from the heatsink or do I? Just wanted to be absolute sure before continuing

Thanks
Rolle
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Old 17th April 2013, 09:17 PM   #560
Rolle is offline Rolle  Denmark
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