A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input) - Page 50 - diyAudio
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Old 28th July 2013, 07:04 AM   #491
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I also use solid silver wiring with cotton (C37 laquered) this is the best!
Any link that could help me understand why this choice and where to provide it?
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Old 30th July 2013, 05:09 PM   #492
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I have two transformers CMLI-15/15B2 (double shielded). I want them to join the DDDAC1794. I enclose a drawing chart. Is that okay? I do not need any capacitor at the output?
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Old 30th July 2013, 05:55 PM   #493
dddac is offline dddac  Germany
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Originally Posted by jeremysk View Post
I have two transformers CMLI-15/15B2 (double shielded). I want them to join the DDDAC1794. I enclose a drawing chart. Is that okay? I do not need any capacitor at the output?
as far as I am concerned, there is no real need to connect the White and Black shielding. As I do not know the transformer, I cannot tell if the low frequency cut off will be sufficient, nor if it can handle the voltage Just try it out :-) nothing can go wrong and you can compare with the Capacitor Output. Better to disconnect the capacitor or use a selector switch...
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Old 31st July 2013, 08:55 AM   #494
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Here is technical indormation of CMLI
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Old 31st July 2013, 09:38 AM   #495
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As I do not know the transformer, I cannot tell if the low frequency cut off will be sufficient, nor if it can handle the voltage Just try it out :-) nothing can go wrong
Hi Doede. It is the Cinemag Dick and you listened to.
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Old 31st July 2013, 10:12 AM   #496
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Hi Bas Horneman. Please help me with CMLI and DDDAC 1794. I want them to join the DDDAC1794. I enclose a drawing chart.
A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
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Old 31st July 2013, 10:24 AM   #497
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I enclose a drawing chart.
Hi jeremysk. That looks good. I am not sure how to connect the white and black wire either. But it will work as you have drawn it. I also have the Cinemags....and will connect them some time this week and will let you know what I did.


As Doede has said: "there is no real need to connect the White and Black shielding". So try connecting all of the ground wires to common.White, Grey and Black.

Last edited by Bas Horneman; 31st July 2013 at 10:27 AM.
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Old 31st July 2013, 11:36 AM   #498
dddac is offline dddac  Germany
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thanks Bas,

I just realized it is the cinemag.. indeed very nice transformer with very good price performance. sweet sound. very analog....

so no worries on low frequency and saturation/ distortion
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Old 31st July 2013, 12:20 PM   #499
PET-240 is offline PET-240  Australia
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Hey Bas,

Looking forward to hearing your thoughts on the Cinemag and the Magnequest iron.....
Thankyou for being a guinea pig!

Drew.
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Old 7th August 2013, 05:28 PM   #500
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Default VCC related chip mortality?

Hi, Doede,

I'm wondering whether you've experienced much in the way of shortened PCM1794A chip lifespan? If so, it might be traceable to supplying them with an 8.0 volt Vcc. While the PCM1794A do function at that high a Vcc, I should think that such an continuous over voltage supply condition would accelerate the chip's breakdown mechanisms.
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Last edited by Ken Newton; 7th August 2013 at 05:31 PM.
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