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Old 21st July 2011, 03:02 PM   #51
sulenta is offline sulenta  Australia
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so how does it sound !?
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Old 26th July 2011, 09:02 PM   #52
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Quote:
Originally Posted by sulenta View Post
so how does it sound !?
I use mine almost everyday, the sound is simply superb. I want to do a blind listening test some day, to put my Theta DAC against this Wolfson and see the listener's response. This is not so amateurish design as it might seem on the first look. There are 13 stabilizers! Yes 13. I got lucky and grabbed 100% finished aluminum box that fits the PCB. So I thing this DAC is somewhere in production these days.
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Last edited by cobretti; 26th July 2011 at 09:05 PM.
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Old 10th August 2011, 04:16 PM   #53
sulenta is offline sulenta  Australia
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well i bought one and it arrived today,so i have few questions if you can please help me,
did you ground the center tap on a 15v supply and what kind of driver are you using.
I just tested it, and my windows 7 64bit default driver is only giving me option up to 16bit /48khz sampling ?!
thanks
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Old 10th August 2011, 08:34 PM   #54
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No, I didn't ground it. It's not needed, at least in my case. It's dead quiet. I just grounded main AC to the enclosure.
I also run win 7 64bit , I didn't install any outside driver. I am not sure how it works with resolution. All I see in my files is different bitrate. I don't see the actual ripped resolution whether it is 16 or 24 bit. Someone maybe can explain this to us how the playback resolution actually works. I am using MediaMonkey and all I see is different bitrate.
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Old 17th August 2011, 02:13 AM   #55
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hi all,
Gee I had a problem on start up dir 9001 went to heaven in smoke ,my second lm7808 is getting hot ,I checked everything and have to think might have some bad parts or I fried them when I soldered them in,I have ordered a dir 9001 and checking v regs all the way out to the chip,
If you want one assembled and tested check along on ebay,This kit has some short comings,Some parts are not labeled as the board and you say O is this a 6.8n or a 68 n cap????like the board say 683 or 682?
The elna 's I have don't say cerafines on the side????? oscon caps maybe but computer grade smt ,not the blue ones pictured,the picture is not the parts I have in my kit ,most look generic,as I said it burned on start up so I hope it's worth the time to fix it to listen to It,ANYONE would make some voltage measurement for the 7808 that runs the 3,3 regs that would be appreciated!!!!!! It's just not right to label and then supply other parts,I have built a bunch of kits but no more from him. check prices I found several cheaper.....
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Old 18th August 2011, 04:44 AM   #56
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I found my problem and I fess up to a solder short between 2 tiny pins on the dac ,couldn't see it but the meter did,I reflowed it and the current went to normal again,So when a Dir 9001 gets here I'll make some sound I hope.
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Old 18th August 2011, 05:01 AM   #57
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here is some pics of what my kit had with it ,What are these caps?
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Old 21st August 2011, 05:18 PM   #58
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683 cap is 68n, and 682 cap is 6n8 (6.8nF) value. Those lm7808 stabilizers run hot and it's normal. They could be between 60-70 deg.C. This is normal temperature.

Last edited by cobretti; 21st August 2011 at 05:26 PM.
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Old 21st August 2011, 06:06 PM   #59
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When the regs get 60-70 degrees Celsius it would not hurt to add small heatsinks so the electrolytic caps will live longer. Just 2 pieces of aluminum and 2 x M3 screws, nuts and washers and you're done.
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Old 21st August 2011, 11:45 PM   #60
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Yes, you're right. But there is no space for the heatsinks in this particular layout. That's why I put high reliability 105C caps.
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