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Old 4th March 2012, 11:50 AM   #121
bcmbob is offline bcmbob  United States
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Hi Andrew, Your clairvoyant. Those are the same questions I was thinking about asking as you made your post. The longest lead will be from the outer-most MyRef to the JC-2 and it is twisted. I've been wondering how much I would gain by carrying that through everywhere. The Neotech OCC is really stiff but I could make it so the "Y" is equidistant between the signal and ground tabs on the MyRefs.

The other question I was considering (now we are in the weeds) is how important is to have the same type of wire in both the signal out and the ground/return. Iv'e seen several DIY interconnect designs that use different sizes and metals.
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Old 4th March 2012, 11:53 AM   #122
AndrewT is online now AndrewT  Scotland
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you're
Copper is my friend.
Solid core wherever possible.
Just thick enough to carry the current.
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Old 4th March 2012, 12:51 PM   #123
bcmbob is offline bcmbob  United States
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I asked the gurus at Parts Connexion and Sonicraft for their recommendation and they both said 20 awg for connecting the boards and 14 awg to signal out posts. I bought a bunch of silver plated stranded copper from ApexJr in 20 and 16 to play with also. It will be fun to see if I can hear any differences.

Here's a pic of one experiment. Braided silver 30ga - have same in copper but waiting for some flex Teflon tuning to arrive.

twist.jpg
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Old 18th March 2012, 02:38 PM   #124
bcmbob is offline bcmbob  United States
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Some good progress to report.

All components are mounted and fully functional. I tried to use twists where possible but wires are short. Placed the furthermost MyRef feed under the other one and shortened the output leads to the posts.

Pin0.jpg

I mounted pins on the LighterNote, a screw terminal on the JC-2 and each of the signal "Ins" on the MyRefs.
Note: 90 degree angle on LN signal in.

Pin1.jpg

Here's how the cat-6 cable attaches to the LN and runs under both the JC-2 and the transformer can.


Pin2.jpg

....and the other end.

Pin2a.jpg

Pin3.jpg

Pin4.jpg

I didn't do as much "wire sound" testing as had been planned. Everything other than the red out to posts is ApexJr silver plated teflon stranded copper. I did notice some "over brightness" with the solid silver interconnects.
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Old 18th March 2012, 03:22 PM   #125
bcmbob is offline bcmbob  United States
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Here's the latest on the music server. Will probably shorten power cable to 2.5" HD. That is for system (OS) files only as an external USB box will hold all the media.

MM1.jpg

MM2.jpg

MM3.jpg

The base of the DAC chassis ended up being a separate unit. I might combine them later to avoid an external link. Just got the kit for this DAC yesterday and have not started to populate. It's the Dario Inserra favorite I mentioned earlier

MM4.jpg

Temporarilly using a Lexicon Omega on a 16' coax from my HT receiver to feed it and the integrated, Sounds fantastic!

MM5.jpg

I see a ventilation challenge coming forth that will probably dictate more separation than I had originally thought. I bought a pair of 70mm low noise fans but haven't figured out how I will use them yet.

MM6.jpg

MM7.jpg

The white card shows the size of the other DAC that's still being worked on. The transformer has dual voltages that will power either unit.

MM8.jpg

Please excuse the fuzzy pictures. Not on my best game this morning

...and yes, I'm getting tired of looking at dirty grey primer.
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Old 18th March 2012, 04:12 PM   #126
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Bob, I envy your ability with cabinets... fantastic work!

Just one suggestion: keep some space for and additional PS in the DAC one
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Old 18th March 2012, 05:37 PM   #127
bcmbob is offline bcmbob  United States
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Thanks Dario - Having fun with both the cabinets and the electronics. I will check in on the DAC thread to get the latest and greatest trani. I bought the one shown to power the WM8740 unit several months ago but will upgrade to R-Core a bit later.
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Old 18th March 2012, 05:48 PM   #128
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Quote:
Originally Posted by bcmbob View Post
I will check in on the DAC thread to get the latest and greatest trani. I bought the one shown to power the WM8740 unit several months ago but will upgrade to R-Core a bit later.
I was referring to a discrete shunt regulator for the analog part...

I bet you can guess which one I'm referring to...
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Old 18th March 2012, 06:02 PM   #129
bcmbob is offline bcmbob  United States
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Yea, I'll get there by and by.
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Old 24th March 2012, 10:11 PM   #130
bcmbob is offline bcmbob  United States
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DAC ADDED

After another struggle with some more silly mistakes (see saga starting here: DAC 2496 (AK4393) DAC KIT With CS8416+AK4393+5532

I got the Mini 2496 DAC assembled and operating. Most everything is mounted with double sided foam tape for now. Several mods and additions have to be made before optimum sound and perminent placement is achieved. Will trim transformer wires, move power LED to front and get two switches that match a bit later.

How does it sound - FANTASTIC. Please see the thread above to read all the raves. Unbelievable sound quality from a small piece of equipment.
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