You could try it similar to the "test mod" for the tubed output DI/O, replacing the new RCA jacks with a headphone jack. I would recommend replacing U2 with...
Yeah, my pre's output is probably better. Though I am looking into building a headphone amp at some point. So when it comes to that time, If i feel like...
Finally got the (edcor 10K:10k) transformers hooked up (the files are right - easy job!) and due to the fact that my preamp is out for repair, I ran them...
For Do-It-Yourself (DIY) AC line filtering, Jon Risch made these recommendations on the inductors: "Preferred units: 50 uH 15 amp powdered iron or ferrite ...
Johnson is a reputable company for chokes, probably the most. I can't find the one you mention in my paper catalogs... Another one is Hammond 1538M24, 50uH,...
I sure don't hear any of that here, just the opposite, less extreme highs than with op amp output. You have to consider that many people don't like *any*...
I get some of this noise also using the Jensen JT-11P-1's. It sounds like high-frequency digital noise leaking thru the output circuit (which in this case is...
Like Craig, I can say that my DIO with the transformer mod is dead quiet. Perhaps some people's related equipment is responding in a weird way to the...
My DIO is connected to my PC by an RME HDSP-9652. I would not doubt that being hooked to the computer is the cause of the noise. I plan to add transformer...
Dana, Good to hear that you're not dependent on the DIO for good sound - I know how frustrating it can be when a tweaked component isn't working well and you...
Yeah, I'd be pretty annoyed if my DI/O broke, though I do have other DACs so I wouldn't be out of business, but I prefer the DI/O. Since I neither see (scope)...
Hello, I found info about using seperate 5V supplies for the analog and digtal parts of the digital board it in the archives, it was suggested as being a...
I can give you a quickie answer re the digital board: the analog/digital supplies are kept separate on this board...you don't have to do anything at all to the...
I haven't done that much of this kind of experimentation to see if the noise changes or disappears. At the time, I had the transformer-balanced outputs of the...
Thanks for the reply. I have a pair of ina103's on the way, and plan to use the digital board seperately, so the main board will not be used. Looking at C3 and...
Actually, the AK4524 is wired "properly" for normal use, the way its digital and analog supplies are connected together. This chip is recommended to be used...
Thanks for that, I'll leave that part alone then to begin with, but you have to wonder about that. I was thinking that if they were seperate, you could do...
I know it seems odd, think we discussed it a long time ago. Anyway, since ART *could* have separated the supplies, since they did for everything else on the...
I really should have done some research before I built separate power supplies. So far I have destroyed 3 voltage regulators and untold dollars worth of caps....
Lama, I would recommend buying the voltage regulators in the plastic packages and then you don't have to worry about the case isolation which is different on ...
Rich, Digikey.com sells surface mount devices (SMD) and something called a SIP. As I recall (from reading others) SMD is beyond what I can do with a soldering...
Yes. FWIW, I replaced C9 with 22uF/50V FC and R8 with 12.1k metal film. I found, by trial and error, that these worked very well for me. I forget the test...
These would be in a 3-leg package and could be in a TO-92 or a TO-220 or a SMT type (not sure of the package #). A small TO-92 package (looks like a small...
Thanks, and I'll bare that in mind. So far I have had minimal lock issues. I've ordered some oscons for everything excepting an L-cancelling pair BG hiQ for...
Hi All, Please excuse the cross posting, but if you get an email from 'Paul Butterfield' with a blank subject, DO NOT OPEN, but delete it. Ain't from me. From...
Hi Everybody, In the spreadsheet shown below, it shows that it tries to keep the load resistance to 50k ohm. (I guess it is the usual input impedance of the...
I mistakenly removed the R2 and R3 from the digital board rather than the the analogue board and now no sound. How do I fix this being a total newbie? HELP!...
Put them back ... From: "valya_ohanes" <valya_ohanes@...> Date: Wed, 07 Sep 2005 14:24:15 To:DIOmods@yahoogroups.com Subject: [DIOmods] Rmoved R2 and R3...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
