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A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
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Old 20th April 2019, 01:22 PM   #6871
eduard is offline eduard  Netherlands
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Hello,
Someone tell me something i dont know.
OF COURSE the amount of AC does matter. Check the Lundahl datasheet!!!
I know the WAVE IO takes around 385 mA. But i thought it only does when there is an audio signal present and it is connect to the mainboard because one of the 5 volt supplies it needs actually comes from the mainboard.
I alrerady figured it out that moving heavy parts outside the chassis will reduce the weight. Doede told me his kind of circuit isnt very sensitive regarding the use of chokes nearby because it is low impedance.
greetings, Eduard
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Old 21st April 2019, 05:56 AM   #6872
schiirrn is offline schiirrn  Germany
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Ok choke master who knows everything. A question to enlighten the enlightened:
how much AC do you have after rectification?
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Old 21st April 2019, 05:57 AM   #6873
schiirrn is offline schiirrn  Germany
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Quote:
Originally Posted by eduard View Post
I alrerady figured it out that moving heavy parts outside the chassis will reduce the weight.

Congratulations.
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Old 4th May 2019, 10:20 AM   #6874
smooth dancer is offline smooth dancer  Norway
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Originally Posted by smooth dancer View Post
My LT-3045 adventure has come to an end. 5v on WaveIo’s input and 12v on input mainboard. Best sound so far. I think that the two 5v regs on WaveIo’s input and I2s isolated has most impact on the sound quality. The 3.3v regs on the dac boards digital side are very hard to tell if there is any improvement at all. I think doede is right here.

So my advice is to change the two 5v regs on WaveIo input and I2s isolated side.


Quoting myself.

Almost one month since the regulator upgrade and I just want to say that this upgrade is a no brainer. The regulators add clarity and dig deeper into the recording. The music sounds simply more involving, and the listening window is expanding with better 3D.
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Old 4th May 2019, 10:26 AM   #6875
smooth dancer is offline smooth dancer  Norway
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My setup from listening position. Dddac at the bottom.
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File Type: jpg 3BD6ACD3-7422-4CE7-81C6-D65624DC3601.jpg (662.9 KB, 134 views)
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Old 4th May 2019, 10:49 AM   #6876
eduard is offline eduard  Netherlands
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Hello,
Some LL2771 will arrive in a week or two.
I can imagine that a serie regulator followed by a shunt regulator like the 8 volt supply on the little dddac boards will give the best of both worlds.
But putting two serie regulators in series sounds like a bit strange to me or not?
The 7810 is like a kind of preregulation AND to protect the shunt from a to high voltage which could fry them.
I have been using the Allen Wright designed shunt supply which uses a 317 ic on the input side and later Allen came up with a modification using two calculated resistor instead of the 317 which removed some '' glare '' from the circuit.
So i understand not all regulators sound the same.
Right now using the Belleson for the wave IO. Going to change its choke input filter with a bigger choke and then probably going to try some other regulators. I wish Guido would make a shunt for the wave io too.
Greetings, Eduard
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Old 4th May 2019, 10:55 AM   #6877
dddac is offline dddac  Germany
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Originally Posted by smooth dancer View Post
My setup from listening position. Dddac at the bottom.
Hey Smooth Dancer,

thanks for feedback on the regulator topic - May be during Summer break I can try this - Easy tweak which is fun of course

and now a bit off topic. I saw your equipment image (nice stuff by the way) and thought, wow we totally individually from each other have similar solutions for the Audio Rack, Mediaplayer and the "Dust cover" for the turntable I assume you build them also yourself?

best
doede
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File Type: jpg Garrard 301 and Rack Project - 035.jpg (703.5 KB, 123 views)
File Type: jpg Garrard 301 and Rack Project - 055.jpg (647.9 KB, 120 views)
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Old 4th May 2019, 02:11 PM   #6878
smooth dancer is offline smooth dancer  Norway
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Hi Doede

Yes, I have built the rack and amp and speaker stands.

You MUST try the regulator tweak, especially the two 5v regs for WaveIo.

In my opinion the sound from Aurender-WaveIo-DDDac is so far the best I have tried. I have also tried Odroid directly to dac, and this was very impressing to begin with, but after a while the listening fatigue sat in.
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Old 4th May 2019, 02:12 PM   #6879
smooth dancer is offline smooth dancer  Norway
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You have a very nice setup Doede. Fine work.
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Old 4th May 2019, 03:23 PM   #6880
SimonJ is offline SimonJ  United Kingdom
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Location: Southampton
Quote:
Originally Posted by smooth dancer View Post
Hi Doede

Yes, I have built the rack and amp and speaker stands.

You MUST try the regulator tweak, especially the two 5v regs for WaveIo.

In my opinion the sound from Aurender-WaveIo-DDDac is so far the best I have tried. I have also tried Odroid directly to dac, and this was very impressing to begin with, but after a while the listening fatigue sat in.

Can you explain what the exact change is please as I want to try it?

Thank you
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