Duelund conversion to DIY Helix Geometry Cabling

The Ultimate Helix DIY Cable - Update - i.e. after 200 hours Break-in!

The two "Ultimate" cables were constructed much the same as the normal Helix Air cables with the following "variation"

• Both cables used 2 x 20 gauge UP-OCC solid Silver wires, each wire inside Teflon tubes for the Signal conductor
• The Double/Double cable had 2 x 18 gauge UP-OCC solid copper with each wire inside Teflon tubes for the neutral
  • and previouslty used Absolute Harmony RCA plugs
• the Double/Single cable had 1 x 16 gauge UP-OCC solid copper with Teflon insulation for the neutral
  • and brand new Absolute Harmony RCA plugs

Even during initial listening sessions these cables sounded amazingly good and it was very hard to distinguish anything between them i.e. on my system.

They have now both had about 200 hours of use and I find it difficult to discern any improvements compared to their initial auditions.

• Both cables are sounding amazingly detailed and airy.
• Both cables sound identical

So breaking down their performance...

Dynmics

• amazingly fast, with more textures being revealed with a fuller sound i.e. more "body"
• percussion instruments, e.g. gongs, cymbals, glockenspeil, xylophone etc. have more details of the initial strike and far more textures in the decay
• plucked instruments are especially more realistic as the string is being plucked

Image

• a more expansive image (in every direction) that envelops the listening position and spreads through both width, depth and height
• more easily discernible "layers" within the music that allows instruments and artists to be more easilty distinguished within the image
• the image now provides that sense of grandeur that large venues posess
  • this is very apparent when playing pipe organ music recorded live in a church or cathedral

Clarity and details

• not only are there more details within the image, but micro details like the fingernail plucking at the guitar or harp strings and the strings buzzing against the guitar fret board are easily heard
• Voculs sound fuller and more complete - they have more body and the whispery aspect of a vocal is even more detailed and discernible.

These cables "persuaded me" to go through my albums searching out details never before heard

• older albums circa 1960-1970 revealed deatils that were shockingly good for the time
• newer albums sounded even more astounding
• studio albums had a more life like aire to them
• Live albums transport you right into the venue

These cables are well worth the expense of the 5N solid silver UP-OCC bare wire.

But as it turns out - the Double/Single, that uses 1 x 16 gauge UP-OCC wire with Teflon insulation for the neutral sounds every bit s good as the Double/Double, with  2 x 18 gauge wire (in Teflon tubes) - so it is more affordable and easier to construct.

• But that is on my system and with my OLD EARS to gauge their performance
• you might want to try the Double/Double if your system is highly resolving, because it might just reveal details that the Double/Single may omit.

That’s about it - give them a try - I don’t think you will dissapointed

Regards - Steve

Hi Steve,

For clarity, are you using the Neotech or the 5N 20 AWG wire? Cost of the latter is half of the Neotech. Don’t know what justifies it aside from the sleeving which will need to be stripped anyway.

Also, how’s the cable stiffness between the single and double neutral assembly?

Cheers

Daniel

@norco74 - these are the wires I used on the two Ultimate DIY Helix Cables

For the 1 x 16 gauge Neutral wire on the Double/Single cable:

• https://www.partsconnexion.com/NEOTECH-71448.html

For the 2 x 18 gauge neutral wire on the Double/Double cable:

• https://www.partsconnexion.com/OCC6N-75183.html

For the 2 x 20 gauge Signal Wires on BOTH cables

• ConneX Wire 20awg OCC5N Silver Wire Hook-up (partsconnexion.com)

Strangely, I had not noticed the price difference because I was always more focussed on other aspects of the build - so...

• you could employ the same technique as used on the neutral wire of the Double/Double cable
  • i.e. of using 1 x 16 gauge bare wire in Teflon tube for the neutral of the Double/Single cable.in place of the Neotech insulated wire
• it does require s little more care when winding the neutral coil
• it will perform equally as well as the insulated wire.
• Use a tube that has an internal diameter 25% - 30% larger than the diameter of the wire.

In listening test performed with an earlier cable,

• I compared two signal wires...
  • the Neotech wire with the insulation removed inside a Teflon tube
  • the bare wire of identical gauge inside a Teflon tube
• I found I preferred the Bare Wire
  • but the differences were miniscule

Hope that clarifies everyrthing

Regards - Steve

@norco74 - forgt to comment on

Also, how’s the cable stiffness between the single and double neutral assembly?

There is little difference in cable stiffness because you are not actually bending the wire in the neutral - The neutral is like a spring so flexes more easily

Doubling up on the neutral causes very little additional stiffness.

Regards - Steve

Hey Steve,

Thanks for the clarifications. Before I move to the next stage of modifications, I will try to understand the cost differences between the OCC5N and the Neotech UPOCC silver wires. Looks like all the silver are created equal.

Cheers

Daniel