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Old 14th November 2012, 03:17 PM   #1481
Nikitas is offline Nikitas  Greece
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I did it!! I did it! I read it all! First to last post!!!!!!!!
Now I've acquired knowledge, desire, passion, headache, foggy vision, tears in my eyes.....
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Old 14th November 2012, 03:23 PM   #1482
AR2 is offline AR2  United States
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Originally Posted by qusp View Post
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...
Dear Qusp,
thank you for nicely summing it. I really hope you succeed with your project and finish, because the reward is high. What you are doing and the quality of the gear you are incorporating is astonishing. At one point I gave up, and made shortcut, by going to analog. I really wish you reach that finish line. I am sure you will.

In my mind, I realized that at this point in time, what are we trying to do is not completely there, it is not formed yet. It is possible, but it is complicated to achieve, and than if I think about the usage it is very much involved process, where my wife cannot just turn on the system, when I am not at home, and listen.

I tested digital rout, where my four channel DAC for test was RME interface that you are using as well. In early tests I used Logic software and made crossover and filters through that. Than I switched to Pure Music, that is outstanding program and works really well for files stored on your disc. But their feature Play Through, really doesn't work. I tried Jack at the time, and it worked, but it seemed complicated specially because I access my music Mac Mini through my laptop.

And I made it work, but everything was sort of unstable, than when crashes, which it does, I would need to troubleshoot, and it all started being annoying to me. And that was through RME Fireface while I investigated software portion. It also did not help that on hardware side, I burned TWICE TWO Acko's DACs. I work late nights on my hobby, and I recall one really frustrated 2 AM event, after long day at work. It was the second set of Acko's DACs. Dual DACs, I just finished setting up all regulators, and wired them, and literarily, I was plugging the last wire to the main PS and I reversed it, and it all went to hell.
That is why, after that disaster I try for everything to use polarized connectors. We all learn through our mistakes.

So I started thinking, what is it that I try to achieve here, what is my final goal? And that is to sit on my sofa, have a glass of finest neighboring Napa vine, burn some wood in fireplace, have my wife next to me and play a good music. And for that you really could have any system... right, hehehe. So when I put that perspective, I decided it is enough of experimenting and testing and buying another board, and ...

So all that complication steams from the fact that I wanted / needed active crossover. Doing it with dual Acko DACs and all regulators it requires is, I have to say is a monumental task, ether from electrical or from mechanical stand point. How to put it all together in a reasonable amount of space? And that is why I came to that vertical mounted piece of Derlin that is a great solution for anyone trying to do the same. It was meant to house dual DACs with regulators on both sides. I really hope to save some time and pain to the next builder.

And after I gave up on digital I realized I had two buffer boards already assembled, and crossover is nothing more than bunch of buffers with RC filters. Those buffers are the best of the best. jFets with cap multipliers with no caps in a line of signal. Zen Mode did awesome job designing them. And I already had digital passive volume control, in order to separately control volume for separate Xover channels. After I burned my DACs, one afternoon I had conversation with Nelson Pass, who helped me with schematic and filter calculations, and my friend Zen Mod as well. More than anything Nelson really help me with perspective on life, haha, since I was in a really bad shape after I burned DACs the second time. Not to mention Acko as well who is an awesome guy and who helped me a lot both times. My DAC boards traveled more than some people in a whole life, hahaha, twice between Australia and San Francisco.

So to complete answer here, two black cases are - one is for power supply Shunty because it takes a lots of space with big transformers I have, and second one is for Xover buffer boards and digital passive volume control that is in charge of levels between Xover channels. Master volume is controlled by Hifidunio.

Qusp, without knowing you, it seems that we both suffer from the same thing. We both like tinkering and playing with electronics, and for both of us " the pleasure is going there, not being there"... right? This process of thinking of it, designing it, making it, is actually equally exciting as much as is using it. And than there is always something new, like Ian's Fifo board, that puts a wrench in almost finished system, hahaha.

Now just to illustrate what I was talking above... These are shoots I did for Alex RAAL, with speakers I am using now (top portion) Imagine me with glass of vine there... hehehe.
Attached Images
File Type: jpg RoomSet_picture.a.jpg (724.2 KB, 312 views)
File Type: jpg Main-1_Black.jpg (389.9 KB, 294 views)
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Last edited by AR2; 14th November 2012 at 03:33 PM.
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Old 14th November 2012, 04:10 PM   #1483
qusp is offline qusp  Australia
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Quote:
Qusp, without knowing you, it seems that we both suffer from the same thing. We both like tinkering and playing with electronics, and for both of us " the pleasure is going there, not being there"... right? This process of thinking of it, designing it, making it, is actually equally exciting as much as is using it. And than there is always something new, like Ian's Fifo board, that puts a wrench in almost finished system, hahaha.
no, I think you know me well enough =) our points in this journey have crossed many times, we even share the complication of being Mac guys. its part of the reason I have not taken you up on your kind offer of help with getting this into a case yet because the shape keeps changing.... though I am nearing the point where if the offer is still open that would be great. then its time for me to obsess about other areas. even at the moment i'm having to slap myself to stop thinking about tinkering with the direct USB->DSD analogue filter instead of having a DAC at all lol.

the fifo did indeed throw a bit of a spanner in the works earlier in the year and I also considered using active analogue so it could stay, nearly bought those ATC crossover packs that were listed here earlier in the year, but having titan and having still 2 fully functional unscorched ackodacs as well as 3-4 different IV stages to choose from, I will just go back to Titan until Ian finishes the multichannel fifo. luckily Acko and Ian are talking about collaboration and that will add another voice, so as long as whatever the solution is can be incorporated into my system i'll be all sorted.

in the meantime i'll finish off all my amps

Last edited by qusp; 14th November 2012 at 04:12 PM.
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Old 14th November 2012, 04:29 PM   #1484
AR2 is offline AR2  United States
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Originally Posted by qusp View Post
no, I think you know me well enough =) our points in this journey have crossed many times, we even share the complication of being Mac guys. its part of the reason I have not taken you up on your kind offer of help with getting this into a case yet because the shape keeps changing.... though I am nearing the point where if the offer is still open that would be great. then its time for me to obsess about other areas. even at the moment i'm having to slap myself to stop thinking about tinkering with the direct USB->DSD analogue filter instead of having a DAC at all lol.

the fifo did indeed throw a bit of a spanner in the works earlier in the year and I also considered using active analogue so it could stay, nearly bought those ATC crossover packs that were listed here earlier in the year, but having titan and having still 2 fully functional unscorched ackodacs as well as 3-4 different IV stages to choose from, I will just go back to Titan until Ian finishes the multichannel fifo. luckily Acko and Ian are talking about collaboration and that will add another voice, so as long as whatever the solution is can be incorporated into my system i'll be all sorted.

in the meantime i'll finish off all my amps
I will be trilled to do it. You just have to let me know when you are ready and what will make sense to help you with. And yes, do the amps first, that takes big time.
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Old 14th November 2012, 04:54 PM   #1485
AR2 is offline AR2  United States
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Originally Posted by iancanada View Post
Hi AR2,

Iím 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 .
Ian
Ian,
Thank you, but I really do not deserve much credit. As I mentioned before, you guys who are thinkers, who make these great products and share the knowledge, that some of us use, are the ones responsible that dummies such as myself had a chance to play with outstanding gears. I just collected info, and in that process met such an amazing people, like my friend Might Zen Mod, or Alex RAAL, or Nelson Pass, who really help me learn and understand. For me, just that fact is richness of life I truly enjoy. If it is not for the DIYAudio, I would be short of such a great source of fun. For the very reason, in order to give something back to this awesome community, I came with idea and started Burning Amp Festival, since being electronic dummy I am not capable of contributing with some design that anyone can use.
But I like being electronic dummy, since my goal is not anything more than to enjoy it and make some gear that will play great music. Now, I maybe took too seriously that word "make", because I love that part too much.
As for my background, you and I are like P and N type, hehehe. You make electronics and it seems like you have passion for photography. I am the opposite, I use to make life through photography, and I have passion for electronic. I am not shooting professionally any more, since I started businesses tied to photography and advertising. Here on my web site you could find some articles written, my favorite is from Apple, although it is dated.

Burning Amp

than go to photography, and about.

My construction story, funny enough really started because I wanted to make a very simple system with tube amps and sensitive speakers. I came across French PHL speakers, but soon I realized I need full highs and stronger bass. I love ribbons a lot and I came with this system shown in this thread.
Finally, my new LAMBDA-PHL-Esg3 speakers are done. Check them out.

While I was making those, I learned wood working and came to realization that I love that process so much. Also, now that my system is not that simple, I needed active crossover. That is how I came to Behringer DCX2496. That one sounded really bad without mods, so...

Behringer DCX2496 digital X-over

and than several posts bellow that one. After suffering with wires and making connections in the case, on the board... I needed better output circuitry, so with help of might Zen Mod and Cviller jFet buffer board came to life

Babelfishing by Mighty AR2


Now I had sensitive top and mid, and very insensitive bass. That needed better Amp...
Aleph J-X Amp Project

Aleph J-X Amp Project

Than I just had it nicely going than Alex RAAl decided to give me top portion of his Eternity speakers. Than Choky came with J2 designs, and I fall for them - for a very strong reasons...

Babelfishing by Mighty AR2

After that shoot, I splited J2 in two cases.

The rest of the story with DACs you know...

While doing all these, I needed tools.... So I came up with another obsession. I started learning machining, powder coating...
Here is my shop and lab... Lab has changed much since the shot was taken. I needed metal tools as well for my studio in order to make various grip equipment when needed, so I started learning machining, and that is how I am able to do all projects that really do need metal tools. Without that it would be much harder for me to do all the stuff I have been indulging myself with.
Attached Images
File Type: jpg Shop.jpg (185.5 KB, 288 views)
File Type: jpg Vladin Lab.jpg (181.2 KB, 278 views)
File Type: jpg Strug.jpg (192.6 KB, 272 views)
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Last edited by AR2; 14th November 2012 at 05:00 PM.
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Old 14th November 2012, 05:13 PM   #1486
AR2 is offline AR2  United States
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Here are some shoots of epic making of my X600 that took me so long. I also have a shot of a making a shot, I know Ian that you would like to peak in the studio, hehe
Attached Images
File Type: jpg AmpStudio2.jpg (706.1 KB, 206 views)
File Type: jpg _RW_0009Amp Progress.jpg (226.9 KB, 167 views)
File Type: jpg FrontPanelSideView.jpg (146.6 KB, 158 views)
File Type: jpg Amp1.jpg (213.5 KB, 157 views)
File Type: jpg Back.jpg (220.6 KB, 146 views)
File Type: jpg IMG_0005.jpg (713.5 KB, 148 views)
File Type: jpg MainAmp.jpg (196.8 KB, 153 views)
File Type: jpg TopView.jpg (314.4 KB, 145 views)
File Type: jpg Laser precision.jpg (258.7 KB, 149 views)
File Type: jpg Case2.jpg (375.6 KB, 167 views)
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Old 14th November 2012, 05:22 PM   #1487
AR2 is offline AR2  United States
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And few more
Attached Images
File Type: jpg Progress.jpg (211.5 KB, 165 views)
File Type: jpg test fit bpanel.jpg (201.5 KB, 121 views)
File Type: jpg Top-view.jpg (193.4 KB, 111 views)
File Type: jpg Trafo-nesting.jpg (195.2 KB, 124 views)
File Type: jpg Milling set up.jpg (276.5 KB, 125 views)
File Type: jpg New toy_tapping.jpg (219.9 KB, 127 views)
File Type: jpg Polishing sides.jpg (137.3 KB, 116 views)
File Type: jpg PowerSupply.jpg (112.3 KB, 132 views)
File Type: jpg Amp Studio.jpg (213.2 KB, 133 views)
File Type: jpg Brushing the front panel.jpg (110.8 KB, 117 views)
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Old 14th November 2012, 05:36 PM   #1488
Zen Mod is offline Zen Mod  Serbia
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Quote:
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......
that middle pic reminds me on Ratluk box

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Old 14th November 2012, 05:48 PM   #1489
qusp is offline qusp  Australia
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haha incognito J2 =)

didnt realize (maybe I just didnt remember, brain is a bit foggy these days) we had graphic design/imaging (photoshop and indesign/prepress is my background) in common too, guess thats where the Mac connection comes in as well.

it realy is a completely worthy sidetrack for the thread and I believe the quality os high enough in construction that despite your modesty, everyone involved will be proud to be a part of it

yes the amps, working on them and the central nervous system to tie everything together now. i'll finish the Aleph JX one of these days, all parts are here, but I commandeered the chassis for fitting 4 channels inside so my system doessnt fill my room and leave no room for listening...

so jealous of your machine shop!

Last edited by qusp; 14th November 2012 at 06:02 PM.
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Old 14th November 2012, 05:55 PM   #1490
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wow AR2; I'm blown away by your skill, capability and equipment. I think I'll show them to my wife when she complains about my tools/parts overrunning our apartment :-)
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