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Old 13th November 2012, 10:59 PM   #1471
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Quote:
Originally Posted by qusp View Post
all good but the above is more efficient than asking, see how long I rambled on without giving you a specific answer?
Such is the curmudgeon world view

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Old 13th November 2012, 11:43 PM   #1472
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Originally Posted by AR2 View Post
Ian,

thank you for suggestions. Yes, I got Crystek 957s 45.xxx and 49.xxx. I did not want to pollute your thread with unrelated discussion, but since you ask I will try to explain my system that has been ever evolving and changing... First check this out. Here you could see my speakers and amps, and some early version of my electronics that has much changed since:

Babelfishing by Mighty AR2

The whole system is housed in three cases. Here is the shoot of original buffer board that in the most recent implementation I modified to serve as a crossover. There are actually now two of those, one above each other, where on the first one I have Lundahls with buffers - two channels balanced, and on the one above I have buffers with filters that is crossover. Crossover is two way balanced, complete discrete with jfets. The original board was developed by Choky - Zen Mode, Cviller and myself based on Nelson's B1. But instead of single ended solution we did it balanced for 6 channel without any caps in the way of signal with implemented caps multipliers in every stage. We did it as a output for voltage out DACs, at the time AK4396, for 6 channels.

Than I decided to change my DACs and selected Acko's DAC to make 4 channel digital crossover. After much research I realized that for Mac there is really only one digital crossover implemented through Pure Music player. That one is working really well, but only if you are plying files off your drive or server. If I would like simply to pop CD or play internet radio, that becomes problem and so far very unreliable. Since I would like to simply play music, and not to constantly change something on my computer, I gave up on computer based Xover. During my tests I realized that I was mostly frustrated and hated when things did not work properly when I simply wanted to listen internet radio, that Pure Music has hard time doing. Music is for listening and enjoyment and I decided to move to active analog Xover for that reason and simplify my life.

I think to have properly done digital Xover DSP solution is needed, and I still did not see one that gives me all I want. I have a Mac mini that fits my system set up, without monitor, that I access through Remote Access software, and I do not want to use PC, for that.

Anyways, I did not like that I needed to distroy that beautiful buffer board and to do some hot wiring, but that was the simplest way of making Crosover, since all the discrete buffers are there. The final configuration after ESS9012 DAC is Legato I/O board in the digital case, than balanced signal to Xover case first through Lundahl to eliminate DC and to double voltage as a means of amplification, than through first set of buffers and than through filters with buffers. I am using digital, passive relayed controlled volume control, just to adjust volume for bass portion of the signal, and the whole volume is controlled by Hifidunio.

Next to answer your question on DAC reguators, please see included pictures of DAC, regulator and Legato housing, that works really well, and saves a lots of space and at the same time keeps very short distance for wiring ether between regs and DAC or for I2S wiring. The material is Derlin - plastic made for machining.

Bellow FIFO board there is exceptional Lightharmonics USB to I2S board shown here, but at the moment of taking last pictures, not mounted yet:

Hifiduino with VFD Display H i F i D U I N O

And lastly, in the third case I have Shunty mighty boards that are supplying power to Legato and to buffer and crossover boards. See picture of board and heatsink implementation. They are in separate case, and they are exceptional power supplies. As for the digital PS I used transformer with several secondary windings and also separate transformer for Arduino. After that I have all double regulations with LDO regs from Linear Systems and TI, all before last regulators, so I have mostly triple regulation for almost all voltages that are in that case. In that manner I provide separate 5V for Fifo, 5V and 7.5V for USB to I2S Lightharmonics board, 10V digital for DAC, + and - 10V analog for DAC board.

And yes, I will be adding your battery control board for clock, isolator board, and Si570 clock board since I would like to have 384K capability.

Huh, this was long write up, but than could you imagine how much pleasure and suffering I endured during this process, hahaha. Thank you Ian for really great product and for sharing it with us all!
Hi AR2,

Although I tried to imagine what your system would be, I was still shocked when I saw those pictures. How could I say, have no word too .

I’m just wondering how did you integrate those much top audio gears into one system? What kinds of background knowledge you get to have? Each section of your system would be a big project for a guy which needs him spending years for the research. It's my honour to be part of your article, what you are doing is the conclusion .

It seems I have to speed up the multi-channel/DSD FIFO project so that you could include the digital Xcove with high quality clock into your system, otherwise I’ll not catch up with your integration speed.

Is that black box your preamp? The Power Amps are Pass X600? I’m afraid I still need some time to get more understand to your system, too much info

Congratulations!

Ian
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http://www.diyaudio.com/forums/group...ml#post3662743
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Old 14th November 2012, 12:01 AM   #1473
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Originally Posted by hochopeper View Post
AR2,

I have no words ....


X 2

Just can't believe it is a DIY project.
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Old 14th November 2012, 08:42 AM   #1474
Nikitas is offline Nikitas  Greece
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Originally Posted by qusp View Post
hmm, so you posted from the first page? I normally read the first page and the last few pages if I cant read the whole thing.
and if I need something specfic, I use the 'search this thread' feature (something I wish more people used, its not bad)

search for 'LCD display arduino' in 'search this thread' and there is a single result, which takes you to that page and several relevant posts and links.

all good but the above is more efficient than asking, see how long I rambled on without giving you a specific answer?

hehehe! What I usually do is read first page, if I like it go to last and then read random in between.

The thing is I'm interested in this topic (and fpga's in general). Also, I'm about to start building my own dac, and I'm looking for the best solution for my money.
With projects like this, it's also pleasing to read the "history" of it.

It seems to me that I'll reach 1000e....How do I tell the Mrs......
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Old 14th November 2012, 09:12 AM   #1475
gwikse is offline gwikse  Norway
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Originally Posted by bigpandahk View Post
X 2

Just can't believe it is a DIY project.

X3.
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Old 14th November 2012, 10:06 AM   #1476
qusp is offline qusp  Australia
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Quote:
Originally Posted by iancanada View Post
Hi AR2,

Although I tried to imagine what your system would be, I was still shocked when I saw those pictures. How could I say, have no word too .

I’m just wondering how did you integrate those much top audio gears into one system? What kinds of background knowledge you get to have? Each section of your system would be a big project for a guy which needs him spending years for the research. It's my honour to be part of your article, what you are doing is the conclusion .

It seems I have to speed up the multi-channel/DSD FIFO project so that you could include the digital Xcove with high quality clock into your system, otherwise I’ll not catch up with your integration speed.

Is that black box your preamp? The Power Amps are Pass X600? I’m afraid I still need some time to get more understand to your system, too much info

Congratulations!

Ian
black box is transformer coupled multichannel jfet buffer and analogue active crossover.

its very cool to see another way of achieving top shelf multichannel performance, i'm confident with the direction I took, but if I was going for analogue active, I cannot think of a better way that it could be done.

in this aspect DIY has the ability to far exceed what is possible with commercial gear, being that it is completely tuned for best performance for a certain objective, rather than limited by the wider, less focused agenda needed to make a commercial system both profitable and applicable to a wider market.

now is time to get my *** into gear to get everything in cases...
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Old 14th November 2012, 10:11 AM   #1477
qusp is offline qusp  Australia
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Originally Posted by Odysseas View Post
hehehe! What I usually do is read first page, if I like it go to last and then read random in between.

The thing is I'm interested in this topic (and fpga's in general). Also, I'm about to start building my own dac, and I'm looking for the best solution for my money.
With projects like this, it's also pleasing to read the "history" of it.

It seems to me that I'll reach 1000e....How do I tell the Mrs......
it seems to me that your 1000e is probably not enough. I will have spent roughly 4000AUD on my 4 channel dac by the time i'm done. not counting the parts that I deemed a dead end and havent made it into the build, with which I could probably make an entire DAC or 2

but I suppose it depends on how much you spend on chassis and the dac itself, also how many inputs you need, power supply options, USB, clocks, IV stage etc. the fifo does tend to lessen the demand on some of this, so actually I take that back, its achievable, but its a bit tight IMO

Last edited by qusp; 14th November 2012 at 10:29 AM.
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Old 14th November 2012, 12:19 PM   #1478
finaxe is offline finaxe  Canada
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Si570 interest list:

1. bigpandahk
2. tagheuer
3. hochopeper
4. qusp (of course)
5. AR2 - definitely!
6. wktk_smile
7. hirez69
8. CeeVee - you bet!
9. number9
10. analog_sa - GB maniac
11. edbk
12. atom6422
13. misterrogers - Of Course!
14. NicMac - as usual!
15. Zoran 16. PET-240
17. Coolhead
18. Slartibartfasst
19. SYklab
20. Regland
21. Neb001
22. SPWONG
23. Greg Stewart (also of course!)
24. Vitalica
25. spm
26. Fridrik
27. ccliu
28. makumba1966
29. lindamar
30. Finaxe
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Old 14th November 2012, 12:20 PM   #1479
Nikitas is offline Nikitas  Greece
diyAudio Member
 
Join Date: Nov 2011
Location: Amsterdam
Si570 interest list:

1. bigpandahk
2. tagheuer
3. hochopeper
4. qusp (of course)
5. AR2 - definitely!
6. wktk_smile
7. hirez69
8. CeeVee - you bet!
9. number9
10. analog_sa - GB maniac
11. edbk
12. atom6422
13. misterrogers - Of Course!
14. NicMac - as usual!
15. Zoran 16. PET-240
17. Coolhead
18. Slartibartfasst
19. SYklab
20. Regland
21. Neb001
22. SPWONG
23. Greg Stewart (also of course!)
24. Vitalica
25. spm
26. Fridrik
27. ccliu
28. makumba1966
29. lindamar
30. Finaxe
31. Odysseas
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Old 14th November 2012, 01:49 PM   #1480
palmito is offline palmito  United States
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Join Date: Dec 2010
Location: Florida,US
Si570 interest list:

1. bigpandahk
2. tagheuer
3. hochopeper
4. qusp (of course)
5. AR2 - definitely!
6. wktk_smile
7. hirez69
8. CeeVee - you bet!
9. number9
10. analog_sa - GB maniac
11. edbk
12. atom6422
13. misterrogers - Of Course!
14. NicMac - as usual!
15. Zoran 16. PET-240
17. Coolhead
18. Slartibartfasst
19. SYklab
20. Regland
21. Neb001
22. SPWONG
23. Greg Stewart (also of course!)
24. Vitalica
25. spm
26. Fridrik
27. ccliu
28. makumba1966
29. lindamar
30. Finaxe
31. Odysseas
32. palmito
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