Craig, The stock DI/O does a lot of things right. Some mods I do not question at all based upon simple paradigms like the best cap is no cap. I used to think...
Hi peak, Thanks for your thoughtful post. I too am very pleased with the way my DI/O is, that is with the "standard" mods and in my system. I have never had...
Did you ever make this or get any feedback? What are the SMD JFETs and other componets that you used/spec'ed on the board? I have some AD825's laying around...
hi peak, interesting post... yust to clarify, it was not i, who experienced "slowness", when modding the size/brand of caps, tho someone *did* mention this a...
Hey Craig, I have heard Maggies once in a system setup in a main living room with a cathedral system...sorry to say that it was not a good listen as I could...
Hello Doug, Slowness is probably one of the lesser used terms to describe what others have called pace and rhythm. It has a lot to do with the leading edge of...
Yup, that was me. I found that increasing the size of the cap on the digital board (from the stock 22uF to 68uF) did achieve what I was looking for but caused...
I keep seeing reference to Jon Risch’s creations, especially cables and filters, but my web link to him is outdated. Sorry for my ignorance, but is Jon’s...
Hi peak, Yeah, Maggies need a largish room IMO, because they need to be positioned properly, which is at least 5' from the back walls. Best if the room has...
If you are looking for the digital filter I don't think it's on his site. It can be found by searching the AA archives. It consists basically of 2 RS 120-6.3CT...
Hi folks, I'm modifying a DIO for a friend, he needs slightly lower gain so I've been playing with the filter/gain spreadsheet (btw thanks to the guys that...
I shorted the analogue INPUTS with a 75 ohm resistor and found out something strange. The volume level dropped substantially. This probably makes sense to...
Thanks for anticipating I think their is more in-depth help on this board than many others! It seems a lot of his stuff is not present on these pages....
Hi Bob, First of all, do you still have the stock input jacks? If so, and you want to short these inputs, you must make 1/4" shorting plugs and insert these...
Bob, The output feeds right through to the input jacks and is only opened (separated) when you plug a phone jack into the inputs. So by shorting the inputs...
Didn't get around to it yet. I've been too busy at work to find any time for modding, so although I've collected all the parts my DI/O is still stock. The JFET...
Here's some drop-out experience from my end. I had one whenever I switched on the television and I accidently solved the problem without modding a thing. ...
Hey JR, Try setting Gain=-1.77 and Fc=49.86 KHz instead of -1.80 and 57 KHz. Relatively small alterations to your original design. This will give you very...
I have worked through one more Bessel design that I will first describe and then discuss: Fc=50.3e3 Gain=-1.737 Rin=4.75 Kohm (or 4.7K 5%) Rfb=8.25 Kohm...
hey peak, re: show-winning sound, i'm seriously considering a pair of vmps neo-ribbons speakers - considering that they won the best sound of the 2002 ces,...
hi peak, maybe one of the reasons i never felt a loss of synergy, or added slowness, w/my di/o is one of the 1st mods i did was the shottky diode upgrade. the...
Craig, How are you handling the sync switching and indicator LEDs? I'm powering my dig board from stand alone 5v supplies(everything else disabled) but still...
Jim, I've got similar concept: dig board taken from dio with caps replaced to BG + analog output transformers + input dig transformer + high performance PSU (2...
Hi Jim, You can't hardwire the sample mode since it's controlled by the microcontroller counting switch pushes...but you CAN set the sample mode while the...
I was planning on mounting the Edcor transformers (10K : 10K) on the top of my DI/O for convenience - and because they won't fit inside the case. Is there a...
Hi Peak, thanks for the info! I ended up going ahead with the 57k f3 Bessel... take a grain of salt because I didn't do detailed before/after comparisons, but...
hi johnr, you again? ;~) definitely get a better power-supply over the stocker, it will make a big difference. then it will further improve if ya plug it...
JohnR, The factor of 10 is my error. The values given Rin=2.2K, etc correspond to a filter with a Fc=500 KHz and not the desired 50 KHz. Note to Doug: The new...
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