A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input) - Page 17 - diyAudio
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Old 23rd February 2013, 01:31 AM   #161
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First things first. The psu was the first thing I tackled. And before I went on to the other boards first a quick check. Yes! It all worked first time.=
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Old 23rd February 2013, 01:35 AM   #162
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Next step the dac itself.
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Old 23rd February 2013, 09:54 AM   #163
dddac is offline dddac  Germany
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you actually peeled off all the capacitors? wow, looks neat ! very sofisticated
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Old 23rd February 2013, 09:59 AM   #164
tuyen is offline tuyen  Australia
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Here's the state of mine at the moment. As I await for the power supply kits to arrive, am using a MUSE linear psu to supply 12V to the dac board. Still undecided how I would like to case mine up.

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Old 23rd February 2013, 11:42 AM   #165
IanS1 is offline IanS1  United Kingdom
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Originally Posted by dddac View Post
Great! and thanks, more to follow I hope
this grounding of the negative is intriguing...
I will run some AP test over that and post back if it does any measurable thing as well, which might give a clue why it sounds better? Ian, how would you describe it?
Grounding of the Negative seems to add more weight/scale to the sound is the best way I can describe it. I don't have any scope equipment here to take any measurements but it definitely sounds better in my system and to my ears.

I look forward to seeing the results of this change tested on a scope when you have time Doede.

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Old 23rd February 2013, 12:13 PM   #166
dogears is offline dogears  Philippines
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you actually peeled off all the capacitors? wow, looks neat ! very sofisticated
I have to agree
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Old 23rd February 2013, 03:39 PM   #167
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I have to agree
All credit goes to my son
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Old 24th February 2013, 09:50 AM   #168
bravi is offline bravi  New Zealand
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Default Removing capacitor jaclets

Hi,

Any reason for removing plastic covers of capacitor?

Cheers!

Ravi
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Old 24th February 2013, 11:56 AM   #169
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Hi Ravi, No real reason. Just heard some people say it sounds better. 47labs and others. My attitude if asked if I believe in that. No, but I'm told it works even if you don't believe in it.
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Old 25th February 2013, 09:40 AM   #170
bravi is offline bravi  New Zealand
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Hi Bas,

Thanks for the clarification.

Another tweak ( read in the Musical Fidelity upgrade description in their website) is wrapping a band of copper around the power supply capacitor- apparently it suppresses resonances.

I tried it using copper tape on the power supply cap of my Revox B77 reel deck. I have a feeling it may have improved things (I suspect a bit of belief is required). Any way, the good part is that it is easily reversible.

Cheers!

Ravi

PS: Awating delivery of my order sent by Doede. I will be able to report back when I assemble the DAC.
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