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Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter
Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter
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Old 11th November 2012, 05:53 AM   #1441
qusp is offline qusp  Australia
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hehe no worries, theres protection there, best use it.
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Old 11th November 2012, 08:32 AM   #1442
bigpandahk is offline bigpandahk  Hong Kong
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hehe no worries, theres protection there, best use it.
Is there any simple circuit to avoid over-discharger the battery and won't create noise to the power?
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Old 12th November 2012, 04:55 AM   #1443
AR2 is offline AR2  United States
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Hi guys,
just to say that my Fifo implementation is done, and I have to say it sounds insanely good. I am amazed after two days of listening. DAC is ACKO DAC, with ESS 9012, with Legato I/V converter, followed by Lundahl transformers and all balanced jFet buffers. Legato board and buffers are fed with Shunty power supply, one for each channel. Analog active crossover is done as well with jFet buffers, feeding two J2 power amps and two X600 Pass amps.
DAC is controlled by Glt's Hifidunio and works flawlessly! Acko DAC is run in synchronous mode, and so far I had not a one glitch. This case, that was Proceed preamp, houses all digital circuits, while two other cases house Shunty and buffers. As you could see DAC is as close as physically possible to the FIFO and Clock board, so that W.FL and U.FL wires are only 60 mm long. Fifo seats above Lightharmonics USB to I2S board that at the time of picture taking was not mounted yet. Thank you Ian for such a great design!
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Old 12th November 2012, 06:36 AM   #1444
glt is offline glt  United States
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Originally Posted by AR2 View Post
Hi guys,
just to say that my Fifo implementation is done, and I have to say it sounds insanely good. I am amazed after two days of listening. DAC is ACKO DAC, with ESS 9012, with Legato I/V converter, followed by Lundahl transformers and all balanced jFet buffers. Legato board and buffers are fed with Shunty power supply, one for each channel. Analog active crossover is done as well with jFet buffers, feeding two J2 power amps and two X600 Pass amps.
DAC is controlled by Glt's Hifidunio and works flawlessly! Acko DAC is run in synchronous mode, and so far I had not a one glitch. This case, that was Proceed preamp, houses all digital circuits, while two other cases house Shunty and buffers. As you could see DAC is as close as physically possible to the FIFO and Clock board, so that W.FL and U.FL wires are only 60 mm long. Fifo seats above Lightharmonics USB to I2S board that at the time of picture taking was not mounted yet. Thank you Ian for such a great design!
Very nice! I feel honored to be part of the ultimate configuration :-)
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Old 12th November 2012, 06:42 AM   #1445
qusp is offline qusp  Australia
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its quite cool indeed, I do have to wonder about the effectiveness of your clock board vibrational damping though

I cant see properly, obviously you arent having any troubles anyway, but is your MCLK u.fl the same length as the w.fl cables?

Last edited by qusp; 12th November 2012 at 06:47 AM.
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Old 12th November 2012, 07:11 AM   #1446
bigpandahk is offline bigpandahk  Hong Kong
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Originally Posted by qusp View Post
its quite cool indeed, I do have to wonder about the effectiveness of your clock board vibrational damping though

I cant see properly, obviously you arent having any troubles anyway, but is your MCLK u.fl the same length as the w.fl cables?
There shouldn't be any damping as he hasn't cut the connections.

AR2 : are you soldering the u.fl cables by yourself?
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Old 12th November 2012, 07:28 AM   #1447
qusp is offline qusp  Australia
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haha, did you seriously just say that? check the single O-ring over one corner while it is, as you correctly point out; still connected..... I guess your sarcasm-o-meter is faulty

ermm no he isnt, besides they are crimped or welded normally. the cables are stock in every way. have you been unable to find short ones or something?

Last edited by qusp; 12th November 2012 at 07:31 AM.
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Old 12th November 2012, 07:35 AM   #1448
bigpandahk is offline bigpandahk  Hong Kong
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Very nice! I feel honored to be part of the ultimate configuration :-)
Without your code, I believe most of us won't have the audio controller for BIII or have to wait forever for the AC2.
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Old 12th November 2012, 07:38 AM   #1449
qusp is offline qusp  Australia
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dunno, maybe he is, but hes used stock materials if he has. the crimpers for this are extremely expensive. seems a bit pointless.
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Old 12th November 2012, 02:43 PM   #1450
AR2 is offline AR2  United States
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Very nice! I feel honored to be part of the ultimate configuration :-)
Glt thank you,
But the real credit should go to you an Ian and to some others like yourself on the DIYAudio who did the ground breaking work and research and shared the great results and ideas with the community here. The results of your knowledge, passion and generosity provided unlimited amount of happiness to me an many members here. All that I am doing is implementing what you provided us with. You website is unlimited source of knowledge, and your ideas and code are such a gift to us that it is hard to find words to thank you enough. And I mean it, the most sincerely because not once when I visited your site or read your posts, or used my DAC I thought of how much work you've done and how persistent you are in your tests.
So, thank you and Ian for such a gifts, I am just happy follower, that enjoys to thinker with this stuff during late nights after work.
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