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Duelund wire
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Author:  M. Gregg [ 24 Jul 2018, 12:00 ]
Post subject:  Re: Duelund wire

Completed the interconnects,

Just running them in at the moment.
One thing about the build, you cannot build the interconnects with straight wires and then twist (it doesn't work).
You need to make off one end of the interconnect and then (plait) or lift one wire over the other to create the twist.
Then make the other end off when its all twisted.

M. Gregg

Author:  M. Gregg [ 30 Jul 2018, 14:25 ]
Post subject:  Re: Duelund wire

I tried the 20GA and 16GA on the volume ground return. (pic)

There is a difference in frequency response as stated in the article where the 20GA multi-strand is brighter, perhaps clearer.
The 16GA is warmer with what sounds like more mid range.

I'm still running the interconnects in and thinking about making up some speaker wires.
I have also used some 20GA and 16GA multi-strand with the cotton/oil insulation removed and conductor run through some PTFE sleeve on the B+ supply feeding the driver section. Again there is the same change in sound linked to the 16GA compared to 20GA.
Might be of interest to someone. Its just a test at the moment.

M. Gregg

Author:  M. Gregg [ 01 Aug 2018, 11:43 ]
Post subject:  Re: Duelund wire


After trying the 16 gauge on the volume ground I went back to the 20 Gauge.
I prefer the slightly less warm and clearer sound of the 20GA. YMMV.
The 16GA had a very different sound.
I am using the 16 Gauge on the B+ supplies (stripped using PTFE insulation).
The output Tx to speaker output terminal is 12GA. (2.5mm)
This really is a personal preference thing. The 20GA at this point was very good but lacking in weight (low bass).
But the point is that each wire has its own sound (which I found hard to believe) until trying it.
I haven’t tried it but my guess is it would have the same effect on SS like a 60's/70's sound.
Perhaps interesting to try in an old juke box and guitar or amp.
I haven't got a cry-baby burner so its run it and listen over a while.
Again its surprising how some detail gets a lot clearer.
Still experimenting at the moment.

M. Gregg

Author:  M. Gregg [ 01 Aug 2018, 12:21 ]
Post subject:  Re: Duelund wire

It’s interesting to note,

in the article they talk about the old MacIntosh amps were wired with similar wire.
I'm trying these mods on a small compact amp I made earlier.
I've done some tests with Zobel networks as well but a different issue.

M. Gregg

Author:  M. Gregg [ 03 Aug 2018, 07:28 ]
Post subject:  Re: Duelund wire

The Duelund wire does "burn in".

There is a change in sound over a few days, and as with most things tends to lose the harshness and get warmer.
Just for interest, the smaller gauge can be a bit stark at first. The bass weight has also improved.

M. Gregg

Author:  M. Gregg [ 03 Oct 2018, 11:23 ]
Post subject:  Re: Duelund wire

Someone must have been listening,

Duelund now make the 20Ga with 600V insulation.

I have no connection.

M. Gregg

Author:  M. Gregg [ 03 Oct 2018, 11:31 ]
Post subject:  Re: Duelund wire

On a side note,

I have found that the different gauges have the same "sound" effect in frequency change when used on the power and HT in tube equipment. YMMV. However this is using PTFE sleeve not the new 600V wire.

Its just a guess that the 600V wire will be similar, but I haven't tried it.
Again soldered with SS47.

Listening, just my opinion.
This is going to sound a bit nuts, the difference between silver and the Duelund.
Silver is a little warmer not so clear.
Duelund a little stark at first with increased HF and bass gets better over time.

M. Gregg

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