Mar 252017

I’ll start with the other stuff.

Members of our US Belle II project team with Energy Secretary, Rick Perry (center), receiving an award for our High Energy Physics project. That’s yours truly in the grey suit standing next to Secretary Perry.

I traveled to Washington, D.C. this last week, where we received a Secretarial Award for our US Belle II High Energy Physics project at KEK, the particle physics laboratory in Japan.

Installing a K-Long & Muon detector panel in the three-story tall Belle II detector at KEK.

A little bit of background:

The Belle II experiment’s global collaboration involves more than 600 members, 65 institutes, and 27 countries.

Our US Belle II project developed, assembled, and delivered advanced detector systems to the KEK particle physics laboratory in Tsukuba, Japan, which are essential for efficiently collecting high-precision data on positron-electron collisions within the SuperKEKB accelerator.

The upcoming Belle II experiment will make high-precision measurements of the properties of B-mesons and other heavy flavor particles to elucidate physics beyond the Standard Model and will likely contribute to a future Nobel Prize in Physics.

First-of-its-kind imaging Time-Of-Propagation counter (iTOP) being installed into the Belle II detector.

Our US Belle II project included team members from 13 universities and the Pacific Northwest National Laboratory. Our team coordinated all aspects of the project with the larger Belle II collaboration at KEK, and successfully delivered ultramodern detector systems to KEK ahead of schedule and below cost.

It was really a great privilege to work with and be associated with such a talented & brilliant project team, and I would like to congratulate them all for doing such an outstanding job on the US Belle II Project!

When you live on the Left Coast, it’s a long trip back from Washington, D.C. to get home.

Home sweet home!

Award presented to us for the US Belle II project from the Energy Secretary.

That’s a closeup of the award next to my Ellington album and turntable. I’ll be handing it over on Monday for proper display at The Lab.

What would you do after getting home from a long trip?

Duelund DCA20GA in the WRSE crossover’s high-frequency circuit.

I decided the best plan after a long trip home was to relax by rewiring the high-frequency circuit of my Westminsters’ Duelund CAST crossovers with Duelund DCA20GA tinned-copper wire.

Duelund DCA20GA in the WRSE crossover’s high-frequency circuit.

My reaction to the Duelund DCA20GA tinned-copper tone wire was pretty much the same as Jim Smith’s (it’s great!), and I have been wanting to rewire the high-frequency sections of my crossovers with DCA20GA for a while, but just having more to do on my ‘to do list’ than I could catch up on prevented it from happening until just now!

An original ‘Ellington at Newport’ that I scored from Discogs.

After removing the Western Electric WE16GA from the high-frequency sections of the crossovers, and rewiring them with the Duelund DCA20GA tinned-copper tone wire, I poured a wee dram of Macallan single malt, put a vintage ‘Ellington At Newport’ LP on the turntable, then put my feet up and listened to some music!

Relaxing after a long trip listening to music.

The change from the Western Electric WE16GA to the Duelund DCA20GA was even more dramatic than when I tried it as interconnects.

To echo what Jim said, the Duelund DCA20GA in the high-frequency crossover circuit was not somewhat better than the Western Electric WE16GA I had just replaced, it was tremendously better!

The new Duelund Coherent Audio DCA20GA tinned-copper tone-wire.

The tone is gorgeous, with vivid tone color distinctions, there is more robust presence of images, more refined and richer high-frequencies, and like Jim said, the “dynamic contrasts stood out in greater relief.”

Overall the change to the Duelund DCA20GA made for a more realistic presentation, more musically natural, with an exciting presence that makes listening to music ‘electrifying’ in the best possible way.

Now I want to rewire my Westminsters’ internally with the DCA20GA, and I hope it doesn’t take too long to get to the top of my ‘to do’ list!

Ok, I’ve got lots to catch up on after being gone all week, so I’ve got to go and get on it.

I’ll be filling you in with more details on my impressions of the Duelund DCA20GA as time goes on, and of course I’ll go into great detail in my review of it for Positive Feedback.

As always, thanks for stopping by!

 Posted by at 7:11 am

  29 Responses to “Jeff Checking In: Duelund DCA20GA Tinned-Copper Tone Wire, and Other Stuff.”

  1. Congratulation Jeff for your good work and for the prize. That’s reflected in your contribution to our passion for good music reproduction.


  2. Hi Jeff! You bi-wire? And also ran the 20 gauge HF wire all the way back to the amp?

    • Howdy Josh,

      I am experimenting with bi-wiring at the moment. DCA16GA from the amps to the LF connections of the crossovers, and DCA20GA from the amps to the HF connections on the crossover.

      Rewiring the HF with DCA20GA made a really nice difference! Next I think I’ll rewire the LF sections of the crossovers with DCA16GA.

      After I do that I’ll rewire my Westminsters internally with the DCA wire.



  3. Congratulations Jeff on your team’s achievement. Thanks for sharing your experiences with the Duelund DCA16GA and DCA20GA wire, especially with re-wiring your crossovers. I am considering the same thing with my Klipsch Forte II’s.

    The Duelund wire in my Class D amp is settling in nicely and the sound is so clear, smooth, sweet and musical. It was really evident when I listened to Oliver Nelson’s “The Blues and the Abstract Truth” on vinyl.

    I’m also seriously considering modifying my Audio Research LS7 line stage preamp where I would route the signal inputs from the source selection switch to the volume pot using the DCA20GA wire, and entirely bypass the signal path traces on the amplifier’s printed circuit board.


    • Hi Rich,

      Thanks for the kind words, appreciated!

      Rewiring the HF sections with DCA20GA really turned out nice, now I think I’ll do the LF sections with DCA16GA.

      I also ordered what I needed to build some shielded DCA20GA interconnects to go from my SUT to preamp. I’m looking forward to trying that.

      Keep me posted on your experiments, it sounds really intriguing!

      Kind regards,


  4. Congratulations Jeff for the award!

  5. Jeff.

    First congrats on your award!

    Second, where can I get the Duelund wire? I haven’t been able to find it.


  6. Hi Jeff,

    I find myself marveling once again at the scale of projects taken on by the world’s physics community. Just recently I watched a couple of PBS (as I recall) programs on the work at the CERN Large Hadron Collider. So very impressive. What a monumental undertaking, leading to the detection of the Higgs Boson, which, as I now understand it, is central to the Standard Model. The coordination of so many great minds in physics, engineering, technology, construction, operation and testing is pretty much mind blowing. To think that the U.S. blew off the Superconducting Supercollider in Texas shows me just how small our current crop of politicians think. The KEK work seems to be in the same vein as the CERN work. Important stuff. It takes my mind back to when the U.S. was fully committed to science. I am eager to see us move more in that direction. Congratulations to you for being involved in work of great significance.



    • Howdy Pete!

      Thanks for the kinds words, appreciated!

      The world’s physics community does some truly amazing work, that’s for sure, and I feel really fortunate to have experienced a small part of it.

      CERN and KEK do different but complementary research in the area of the energy frontier of physics, and both fulfill important research needs.

      The Office of High Energy Physics in the Office of Science pursues research in three frontiers of physics: the energy, the intensity, and the cosmic frontiers.

      There’s lots of interesting things to look into, like neutrinos, dark energy, and dark matter, for example, some of which we are doing at PNNL.

      The DOE is pretty good at doing science, now with over 115 Nobel Laureates associated with their research. You can see the list of the DOE affiliated Nobel Prizes here.

      We’ve got to get together for some more hi-fi fun & games! 🙂

      Kind regards,


  7. Hi Jeff,

    Congrats on the award! I work at PNNL myself. Would like to get together for a listen, if you’re available.


    • Hi Rahul,

      Thanks, appreciated!

      I’d be glad to have you come over for a listening session one of these days.

      Swing by my office and say “Hi!” when you get a chance!

      Kind regards,


  8. I finally got around to rolling a pair of unshielded Duelund DCA20GA RCA interconnects to use between my Audio Research LS7 and my power amps, an updated McIntosh MC240 stereo tube amp and Duelund-wired DIY Texas Instruments TPA3118-D2 Class D dual mono amp. I have only listened to my system with the MC240 tube amp and I am marveling at the improvement over the Belden 8402 RCA interconnects I’ve had in my system for some time. Just as Jeff has described, the Duelund interconnects have raised the level of musicality and “real soundness” in my system. Listening to Branford Marsalis and Ellis Marsalis’ “Loved Ones,” and all I have is music filling my listening room. I guess I better get busy and make a pair of shielded Duelund DC20GA interconnects to go from my Audio Research PH5 phono stage to my LS7 linestage to complete the loop.


    • That’s awesome, Rich!

      I’m going to keep experimenting with the Duelund DCA16GA and DCA20GA. So far the shielded DCA20GA IC’s for the SUT to MX110Z connections has been working very nicely, and I hope to be able to share a little more about that before long.

      Keep me posted on your adventures, I’m really enjoying hearing about them!

      Kind regards,


  9. Hello Jeff,

    I also got around to making up a set of I/C’s with the 20ga. Having re-read your Acoustic Revive articles I noted that AR used solderless plugs on their best cables, so I sourced a set from the Far East. I was sceptical as to the quality as they were £22.00 for 4, but in fact that are better made than WBT plugs that have cost considerably more.
    I am using an unshielded set between my 47 Lab Gaincard and Phonocube. I have 16ga speaker cables too, so full vintage tone now!
    I will try building a shielded set as well.
    I am also getting excellent results, and they have put my reference cables into retirement. This is after one evening, so as they run in I can look forward to even greater listening pleasures.
    Over the last 10 years my cables have tumbled in price, yet dramatically improved in quality!

    Many thanks for all the information.


  10. Hi Jeff,

    I wanted to see if you had any experience using the tinned copper wire as headphone cables. I have a pair of Grado SR80s with a failing cable and I was thinking of using the Duelund 26awg wire to replace rewire them. Do you think this would be the best gauge and that these would be a good option?


    • Hi David,

      I have used the 20awg for headphnes but the cotton wore away after only a few weeks. I ended up using 20awg western electric wire as it has a pvc and cotton outer and around a year on it shows no wear. I have the duelund 26awg but its quite fragile and i dont think suited as a headphone cable.

      I would reccomend sommer peacock twin cable (check ebay) its a very high quality copper wire that is suited much better for headphone cables, is very easy to use and sounds much better than the stock cable of my lcd2 headphones.


      • Thank you, Joseph.

        I appreciate the heads up about the wear issues and will take a look at the Sommer Peacock Twin Cable.


    • Hi David,

      I don’t have any experience with using tinned-copper wire with headphones, sorry about that.

      Looks like Joseph has some good suggestions for you.

      Kind regards,


 Leave a Reply

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>



%d bloggers like this: