Unknown Speaker Wire with interesting Features

[tiefbassuebertr]

In the attachment you will find a kind of wire, which I have never see before and which have an excellent sound quality.
One feature is the fact, that for positive and negative rail an independent wire was provided.
The structure is as follows:
1) several silver wires are twisted
2) between external insulation and twisted silver wires there are ceramic round spacer parts like from follow URL in use:
CB3 MULTICOMP, Spacer, Round, Ceramic, 5x5mm | Farnell element14

Who know the manufacturer of this wires (maybe Isoda?) ?
Who have realized such a cable by diy (high end audio homebrew wires) ?

 

[Preamp]

Looks like some high voltage stuff...

Edit: What legths do you have of those? Not that it's some NiChrome stuff and you're using huge power resistors as speaker wire

Edit2: Yup, probably some sort of heater wire.

 

[Ian Finch]

I don't think the cable is intended for audio use if the wire is solid in any case. The ceramic beads suggest a heating or high temperature application such as embedded floor heating cable, heating or power in industrial chemical plant, storage etc. It could also be an amateur attempt at exotic cable construction from any heavy cable on hand, for all we can tell in that pic.

Test for resistance and compare to copper of the same diameter(s)

 

[DF96]

Perhaps someone read that speaker cable needs to have the same characteristic impedance as the speaker (it doesn't) and then became further confused and thought that characteristic impedance was the same as series resistance (it isn't). Hence wiring speakers with resistive heating cable?

 

[tiefbassuebertr]

In the attachment you will find a kind of wire, which I have never see before and which have an excellent sound quality.
One feature is the fact, that for positive and negative rail an independent wire was provided.
The structure is as follows:
1) several silver wires are twisted
2) between external insulation and twisted silver wires there are ceramic round spacer parts like from follow URL in use:
CB3 MULTICOMP, Spacer, Round, Ceramic, 5x5mm | Farnell element14

Who know the manufacturer of this wires (maybe Isoda?) ?
Who have realized such a cable by diy (high end audio homebrew wires) ?

Yesterday I receive a PM with the wanted information. Basically it is follow model

***Acapella LaMusika Reinsilber-Lautsprecherkabel 2.5M*** | eBay
The review in english is here:
SoundStage! Equipment Review - Acapella Audio Arts High LaMusika Interconnects and Speaker Cables (10/2007)
The sonic character is similar to several ISODA models like this:
Diverse Vil noengang hetsingen av oss audiofile ta slutt? - Side 60
Isoda - cjm-audio High End Audiomarkt für Gebrauchtgeräte
http://www.audio-markt.de/_markt/uploaded/6304896433.jpg

 

[DF96]

It is Acapella's belief that ceramic is second only to air as a dielectric

Second in which sense? Which ceramic? Note that ceramic is not a substance but a type of substance, with widely varying electrical and mechanical properties within the ceramic family.

Some ceramics are hugely inferior to both air and PVC as a cable dielectric. Air is a poor cable dielectric because it is too floppy; most ceramics will be far too inflexible. Air and PVC are both fairly linear as dielectrics - certainly sufficiently so for audio cables; many ceramics are highly nonlinear, temperature dependent and some are piezoelectric - in fact it would be hard to find a worse cable dielectric than these. Even the well-behaved linear dielectric ceramics usually have a fairly high permittivity so add to cable capacitance, which is usually a bad thing.

The rest of the review is typical cable fan gushing prose, which can be safely ignored by those interested in genuine sound quality.

Thise who want bad audio cables can make their own for much less money than buying them.