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Old 14th July 2013, 06:06 PM   #2891
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Quote:
Originally Posted by palmito View Post
Thanks again Ian. I placed it correclty now. I never used the 1xclock board until now to test the system after it stopped playing and I don't remember ever pulling the XO out (but good memory is not a trait I have). I did pull the XO's out of the 2xclock board when removing the regulators, but I placed those back correctly.

But it didn't help, I still get no sound and only the power led on in the FIFO board.

Back to waiting for the next group buy...
Hi palmito,

In this case, please sent them back to me, I can address what was the problem. I don't know how long it will take for you to get the new board from next GB.

When you do so, please don't forget including a small piece of paper with your shipping address, your email, your DiyAudio ID ,your order number and some note about the problem. Thanks.

Regards,

Ian
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Last edited by iancanada; 14th July 2013 at 06:09 PM.
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Old 14th July 2013, 07:01 PM   #2892
palmito is offline palmito  United States
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Originally Posted by iancanada View Post
In this case, please sent them back to me, I can address what was the problem.
Thanks a lot Ian. I will send it out tomorrow.
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Old 14th July 2013, 08:02 PM   #2893
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Originally Posted by edbk View Post

even copper or silver wiring in the powersupply is audible,
You about the primary or secondary stage?both?
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Old 16th July 2013, 07:24 AM   #2894
Ceglar is offline Ceglar  Australia
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With 6V input to the FIFO, why would I get 6V at J5 (5V output).

Wanting to use J5 to power the isolated I2S outputs on WaveIO (5V), glad to have measured first!. Can trim FIFO's DC input back to 5V (and then have 5V also at J5) but wondering firstly if J5 is supposed to have 5V with when the FIFO is powered with 6V, or if J5 simply equals the voltage at the input to the FIFO.

Thanks,
Shane
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Old 16th July 2013, 04:33 PM   #2895
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Originally Posted by Ceglar View Post
With 6V input to the FIFO, why would I get 6V at J5 (5V output).

Wanting to use J5 to power the isolated I2S outputs on WaveIO (5V), glad to have measured first!. Can trim FIFO's DC input back to 5V (and then have 5V also at J5) but wondering firstly if J5 is supposed to have 5V with when the FIFO is powered with 6V, or if J5 simply equals the voltage at the input to the FIFO.

Thanks,
Shane
Hi ceglar,

The DC output is just after a CLC filter from input, that's why it's a bit lower than the input. Both clock board and spdif board, as well as isolator board have own regulator. You can power FIFO from a 5V DC input without any problem.

ian
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Old 16th July 2013, 05:03 PM   #2896
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Originally Posted by edbk View Post
I've done some extensive comparisons between the si and dual xo with crystek 957 22/24 mhz boards using the spidf/aes board as output.

The si570 board cannot be used to output 176/192 khz on spdif in my case since itll run 45/49 mhz on its lowest group setting, so when using the si570 I downsample those to 88.2/96 khz in software (doesnt seem to have much if any negative impact on sound).

I have a preference for not using the isolator board with both clock boards, it sounds better to me without, its advantage may be nullified by the spdif board being powered from the fifo board.

I'm using Sjostrom superregulators to power waveio/fifo with fully seperated clc powersupplies. The powersupply has a very large impact on the sound, quite surprised by how much for basically a D/D converter! I have tried nichicon muse, panasonic fc, mundorf ag, elna silmic 2, they all sound quite different, also interesting that clc sounds better then c before the sjostrom superreg (cleaner/more LF impact), even copper or silver wiring in the powersupply is audible, I can offer no explanation for this, I've gone back and forth numerous times over several weeks and have had friends over to make sure I was not imagining things..

The dual crystek setup sounds significantly better in my system. Cleaner, clearer, more/finer detailed, better soundstaging, tighter more powerfull lows/more impact. The Si570 has some midrange sweetness that may be appealing to some. Its been powered with the supplied 3,3v reg though in all cases with a sjostrom prereg when using the isolator board (only have 5/6V sjostrom superregs available).

Now FWIW because for a totally fair comparison I should power the si570 with a sjostrom 3.3v supperreg which I havent tried yet. Oh I'm fully aware the si570 was developed for 90/98 mhz duties so again this comparison is only valid for 22/24MHz duties.

A final note, the fifo improves the sound from the waveio quite considerably, even when feeding a hypex dlcp which resamples/reclocks everything again anyway, good stuff!!
Hi edbk,

Thank you so much for sharing your experience with us. It seems you did good job on research and went through a lot of combinations.

I'm sorry for my late reply, I was busy working at a testing lab to fix a 900MHz EMC problem last week.

Yes, with FIFO, we can have a lot of new discovery on digital audio, it's really a good stuff for our audiophiles.

Si570 clock board was not designed for spdif board, it's running at double speed mode. You can try connecting the MCLK from the u.fl connector on the FIFO board to the spdif board to support full Fs range, but the problem is you will degrade the MCLK quality in this case. If it is possible, I suggest you try I2S output for different MCLK and *Fs combination.

I'm interested in the CLC filter and the sjostrom prereg you mentioned. Can you show some thing more to us about them?

Regards,

Ian
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Old 16th July 2013, 05:22 PM   #2897
qusp is offline qusp  Australia
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Ian, I probably have a spare sjostrom reg PCB around here somewhere you can have if you want. its basically a jung superreg
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Old 17th July 2013, 02:40 AM   #2898
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Originally Posted by qusp View Post
Ian, I probably have a spare sjostrom reg PCB around here somewhere you can have if you want. its basically a jung superreg
Thanks qusp, yes, I'm interested in the PCB. I'd like to give a try if you have.

Regards,

Ian
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Old 17th July 2013, 02:44 AM   #2899
Ceglar is offline Ceglar  Australia
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Originally Posted by iancanada View Post
Hi ceglar,

The DC output is just after a CLC filter from input, that's why it's a bit lower than the input. Both clock board and spdif board, as well as isolator board have own regulator. You can power FIFO from a 5V DC input without any problem.

ian
Thank you, Ian. Much appreciated and I look forward to your PCM board as well !!


Regards,
Shane
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Old 19th July 2013, 10:35 AM   #2900
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Originally Posted by iancanada View Post
Hi edbk,

I'm interested in the CLC filter and the sjostrom prereg you mentioned. Can you show some thing more to us about them?

Regards,

Ian
As qusp said the sjostrom is based on the jung superreg, modified to use smd parts. It has a small footprint. It was tested in Linear Audio Magazine vol.4. I really like them obviously.

Its PSRR was something like -120 dB at 10Hz and -80dB at 1MHz from memory so could be off a little. So maybe the L helps to improve things in the MHz range?

I'm currently running 60VA toroid - Cree Sic Schottky's - Mundorf AG47mF - a modified lundahl ll2733 choke (DCR 3,4 Ohm/460mH) - Mundorf AG47mF - Sjostrom reg on both waveio and fifo

Removing the choke on the FIFO ps makes the highs more agressive/harsh but the most noticable is its a lot "quieter/more relaxed" and the LF impact is considerably higher + more controlled.

Difference on the WAVEIO seems minimal.

Calculating from voltage drop the WAVEIO draws around 350mA max and the FIFO/dual clock board 150 mA.

Next on my to try list is Choke input, LCLC with a mundorf ag/elna silmic mix, but I need to purchase a different transformer for that first.
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