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You've Done It Again...

75.129.5.253

Posted on July 31, 2020 at 12:19:44
Aspheric
Audiophile

Posts: 170
Joined: March 12, 2001
My long relationship with speaker wire began in my college years. Funds for audio were short. That laid a foundation for my lifetime interest in high quality audio reproduction without investing vast sums of money.

In those early years speaker terminals were not much more that a small bolts since wire quality was not important. Meet the electrical specifications for distance and lamp cord (zip wire) was just fine.



By the early 1970s the audio community realized that wire did make a difference in sound quality and we began to use Belden 14 and 12 gauge. Of course, that didn't go well with the amplifier speaker terminals so we employed crimp or solder spade lugs.



The spade lugs were structurally weak and of questionable metal composition, but they did fit the terminals without shorting. Belden served as my standard speaker wire for almost 20 years.

During the 1990s Cat5 network cable scraps became commonly available. The Cat5 speaker wire craze caught my attention. By gosh, I built up and tested all kinds of speaker cables from 18 to 8 gauge, even going so far to build in cotton fibers for damping.



Over time I learned ALL cabling is equipment dependent and simply adding more wire did not produce dividends in sound quality. My Magnepan MG12 speakers with a subwoofer seemed to perform best with 14 gauge.

Finally giving up on Cat5, I ordered up .999 dead soft silver 24ga that I threaded through teflon tubes for air insulated 14 gauge. These were good sounding speaker cables that held their position in the audio system for roughly 10 years.



A few years ago a small spool of ribbon wire at a university disposition center drew my attention. There was only about 20' on the core and it was labeled 1972. Two dollars seemed like a deal. Returning home I stripped one of the conductors to discover minute silver strands.



It was a revelation in sound. The cable presented music with the speed of silver wire with great detail and a broad, deep sound stage. It had all the characteristics of a silver speaker cable; very precise and on the dry side of sound quality. Also, the 15ga was a bit weak on the lower midrange and bass. This required a slight rise in subwoofer volume.

Not completely satisfied I have been hunting for something different.

And... Duster, you've done it again. I can't imagine the time and resources to come up with all of these low priced, high quality solutions. Fuzez speaker cable is excellent.

An unknown name to me, I discovered the Furez cabling is inexpensive. So, I ordered up portions of 12/2 (12ga), 14/4 (wired star quad - 11ga.) and 12/4 (wired star quad - 9ga). I will refer to them as 12ga, 11ga and 9ga.

It is an unusual cable built on a core of 27ga wire strands with dozens superfine 36ga strands. Bundles of this wire combination are very tightly packed into foamed polyethylene insulation.

So how was this substantial wire able to best the 14ga maxim of my speakers? My humble guess is that the many strands of 36 gauge support the delicate higher frequencies. Two recordings attest to its detail.

"Low Mist Variation 1" from Seven Days Walking - Day 1 by Ludovico Einaudi (Qubuz) contains some soft and quiet resonances at the start of this selection. My wife, the musician, believes it is tremolo of piano strings. For me it sounds like delicate bowing of a cello. Either way it is an entrancing musical presentation on the Furez speaker wire.

Then there is "The Astounding Eyes of Rita" from the album of the same name by Anoutar Brahem (Qubuz) with its unusual interplay of instruments and room resonances. Wonderful detail and complexity.

The 12, 11, and 9 gauge all reproduce music in the same character, but there are two qualities that changed moving up in gauge.

Dynamic range and fullness of sound added more dimension to the music with the 9 gauge superior.

Sound stage did not decrease in size but moved forward from an area behind the speakers to pushing musicians directly into room.

The 9 gauge has both power and delicacy. I would place it just over to the sweet side of neutral in tone.

If you decide to give this cable a try, be aware it is not possible to effectively strip the wire. The conductor is sliced open and spread apart. (There are videos and notes online to visually describe the procedure.)



Also, with the size of the wire break in time is longer. My notes read:
10 hours - accentuated high end calms
50 hours - bass arrives
75 hours - Steinway grand piano finds it character
100 hours - Soundstage fills out in detail.

So there is a bit of information. Some history of experimentation to discover excellent cables delivering superior sound. Duster, you've done it again :-)



 

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RE: You've Done It Again..., posted on July 31, 2020 at 18:39:42
Duster
Manufacturer

Posts: 17117
Location: Pacific Northwest
Joined: August 25, 2002



Image: Red arrow points at the coarse gauge strands at the center of the stranded bundle.

Hi Aspheric,

I admire your effort to try the particular Furez speaker cable models for a more in-depth evaluation of the different gauges/geometries!

Glad you took a chance on trying a relatively unknown cable make that deserves more attention from those who might seek a low-cost option for their wants/needs.

Rather than the fine gauge strands that surround the coarse gauge strands at the center of the bundle, the foamed dielectric is key in how revealing an inexpensive cable can sound vs. a solid dielectric.

If there is anything I wish to express the most about the "mystery" of cables, it's the effect that the insulation has on the performance of an audio cable. It's not just the conductive metallurgy that has a great impact on the sound, it's also what covers the conductors as insulation, since energy travels through the dielectric, as well as being stored and released within it with different characteristics based on the type of dielectric that is involved.

With air being the perfect dielectric, a nitrogen gas infused dielectric makes "the necessary evil" of cable insulation a more acceptable matter.

https://passive-components.eu/what-is-dielectric-constant-of-plastic-materials/

Cheers, Duster

Furez FZ124AS 12/4 Speaker Cable

See link:

 

How does this compare to say Straightwire Quartet or...., posted on August 1, 2020 at 14:01:58
TWB
Audiophile

Posts: 7408
Location: Long Beach, California
Joined: January 5, 2001
Canare 4S11? Aside from the fact that your rec. would be less expensive and the need to terminate it yourself. They all would appear to be the same configuration and I assume quality...

 

RE: How does this compare to say Straightwire Quartet or...., posted on August 1, 2020 at 16:01:35
Aspheric
Audiophile

Posts: 170
Joined: March 12, 2001
The quality of construction and basic design of Canare, Straightwire and Furez may be similar, but their audio attributes would likely be different.

A solid method is to order, build and discover the results with your specific equipment. All three brands are not very expensive.

 

RE: How does this compare to say Straightwire Quartet or...., posted on August 1, 2020 at 17:04:53
Duster
Manufacturer

Posts: 17117
Location: Pacific Northwest
Joined: August 25, 2002
Canare 4S11 features solid polyethylene insulation with a higher dielectric constant vs. the Furez FZ124AS featuring foamed polyethylene insulation with a lower dielectric constant. This is the greatest game changer, and puts the Furez product in a higher league. The Furez FZ124AS also features four 12 AWG conductors (9 AWG effective gauge) vs. the Canare 4S11 which features four 14 AWG conductors (11 AWG effective gauge). I also consider the coarse gauge strands at the center of the finer gauge stranded bundle to be a significant factor in how good the Furez product performs as a stranded speaker cable design.

 

RE: You've Done It Again..., posted on August 3, 2020 at 14:49:09
py272
Audiophile

Posts: 140
Location: Hawaii
Joined: February 20, 2007
Based on your review I am thinking of trying the 12/4. As to connectors (spade and bananas), how is the furez products?

 

RE: You've Done It Again..., posted on August 3, 2020 at 17:22:08
Duster
Manufacturer

Posts: 17117
Location: Pacific Northwest
Joined: August 25, 2002
No direct experience of the Furez speaker cable connectors, but they seem to be excellent.

 

RE: You've Done It Again..., posted on August 3, 2020 at 19:04:48
py272
Audiophile

Posts: 140
Location: Hawaii
Joined: February 20, 2007
Duster,

Thanks for the reply. What are your thoughts regarding set screw versus crimp solder connectors? I do not have a crimping tool so I feel it would be easiest to buy set screw connectors. Furez has a spade set screw connector that accepts up to 6AWG and the furez cable will about 6 AWG once I bi wire the two 9 AWG. This will be for the amp end.

As to the speaker end (vandersteen 2CE speakers) do you know of any good set screw bananas that will accommodate 9 awg?

Patrick


 

RE: You've Done It Again..., posted on August 3, 2020 at 21:35:46
Duster
Manufacturer

Posts: 17117
Location: Pacific Northwest
Joined: August 25, 2002






A prefer a set-screw connector with a copper crimp sleeve. A crimp sleeve is made of thin soft copper, and the only thing that's required is an inexpensive crimp tool that can form a trough on one side of the sleeve that the dual set-screws can "grab" into/onto. The major affixment for the termination is created by the dual set-screws rather than a severe crimp made by a heavy-duty crimp tool for a high-mass crimp-type spade. I don't use a soldered spade or a soldered banana plug except for special applications. The unplated Furez set-screw spades seem impressive, and AV Outlet sells the proper crimp sleeves, and normally carries the ViaBlue TS2 set-screw type BFA banana plug, but it's out of stock, at this time.

The affordable set-screw type Viborg VB401B gold-plated copper banana plug is interesting. Pure copper with a beryllium copper tensioner. It would be a good mate for an unplated copper set-screw type Furez spade at the amplifier end. On sale 30% off right now, but it may take a month to be delivered.

See link:

 

RE: You've Done It Again..., posted on August 5, 2020 at 11:31:52
py272
Audiophile

Posts: 140
Location: Hawaii
Joined: February 20, 2007
Duster,

Thanks for the reply and the links to the connector.

 

RE: You've Done It Again..., posted on August 5, 2020 at 16:25:41
py272
Audiophile

Posts: 140
Location: Hawaii
Joined: February 20, 2007
Duster,

Regarding the Viborg VB401B, this is a gold plated product but I see there also is a non-gold plated version. Do you feel the gold plated version is superior?

Patrick

 

RE: You've Done It Again..., posted on August 5, 2020 at 16:38:04
Duster
Manufacturer

Posts: 17117
Location: Pacific Northwest
Joined: August 25, 2002
There are no reputable unplated copper set-screw type banana plugs that I'm aware of. If you wish to use an unplated copper banana, the crimp/solder type Furez banana plug seems to be high-quality.

 

RE: You've Done It Again..., posted on August 5, 2020 at 17:51:00
py272
Audiophile

Posts: 140
Location: Hawaii
Joined: February 20, 2007
Duster,

Thanks the reply. Based on your recommendation, Viborg gold plated banana plugs ordered from allied express. It may take a while to arrive but I am in no big rush.

Patrick

 

RE: You've Done It Again..., posted on August 5, 2020 at 19:48:40
Duster
Manufacturer

Posts: 17117
Location: Pacific Northwest
Joined: August 25, 2002
I like the design of a hollow copper pin with a spring-like tensioner that pushes the hollow pin against the banana slot for good signal transfer.

BTW, the Viborg set-screw type banana plug can be terminated with copper crimp sleeves just like the Furez set-screw type spade. It's the same termination method of my WBT NextGen spades. It's a modular system that allows different connectors to be swapped-out. It was a relief when a different amplifier was used with larger-sized binding posts. I was able to swap-out the connectors very quickly.

 

RE: You've Done It Again..., posted on August 5, 2020 at 20:00:59
py272
Audiophile

Posts: 140
Location: Hawaii
Joined: February 20, 2007
Duster,

I now have a question of the copper crimp sleeve as to what size to buy. On the AV outlet site, they sell them in three sizes (4, 6 and 10 mm). For the Viborg connectors and 9awg wire, what size sleeves should I use?

Then for the Furez SP8-SB60NP spade and 6awg wire, what size sleeves should I use?

Also can you recommend an inexpensive crimp tool?

Thanks,
Patrick

 

RE: You've Done It Again..., posted on August 5, 2020 at 20:58:23
Duster
Manufacturer

Posts: 17117
Location: Pacific Northwest
Joined: August 25, 2002
10mm crimp sleeve for both applications. Order few extra crimp sleeves in case there is a learning curve.

This inexpensive crimping tool from Home Depot is appropriate for the task:

 

RE: You've Done It Again..., posted on August 5, 2020 at 21:29:51
py272
Audiophile

Posts: 140
Location: Hawaii
Joined: February 20, 2007
DUster,

Thanks for all your assistance.

Patrick

 

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