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  »  New  The Melquiades' "Remote Biasing"..  The Melquiades' "Remote Biasing"...  Melquiades Amplifier  Forum     0  16694  02-05-2008
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  »  New  The BEST bass cable?..  Dialectic biased cable....  Audio Discussions  Forum     4  31776  04-22-2011
05-14-2008 Post does not mapped to Knowledge Tree
glaesemann
New York
Posts 22
Joined on 12-18-2007

Post #: 1
Post ID: 7396
Reply to: 7396
Cable Current Loading
Roman in a few posts you have made reference to the interesting topic of cable current loading. I'm keenly interested in your findings.


"I'd rather know than believe." - Carl Sagan
05-14-2008 Post does not mapped to Knowledge Tree
Romy the Cat


Boston, MA
Posts 9,704
Joined on 05-28-2004

Post #: 2
Post ID: 7398
Reply to: 7396
Design audio in the way how we design bridges?

 glaesemann wrote:
Roman in a few posts you have made reference to the interesting topic of cable current loading. I'm keenly interested in your findings.

Glaesemann, there is not a lot to talk about it. My observation showed that practically any cable I trued was benefited from current loading… The more currant cable cares the better is sound. There are many explanations why I have no time now…

We can’t infinitely get current in cable as voltage in the cable whatever it is. We can drop the output impedance only up to a point and increase load impedance up to a point (there are other then rise currant consideration in it). So, the most reasonable solution would be to drive DC current across the cable, the cable  that cares AC voltage of signal, or to bias the cable. There is a large array of options how it might be done – here is how I did it in Melquiades.

http://www.romythecat.com/Forums/ShowPost.aspx?postID=6552#6552

Still, depends of the topology of the inputs and output stages the different biasing methods and configuration could be used. You might drive currant in and against the AC flow, you can even inject some UHF modulation if you wish – it as all changes sound. To my knowledge no one look at this direction. In fact I very much sick from all cable people – the audio-inhabitants as soon as they discover any more or less wining configuration immediately begin to bake cables for trade and in a season or two the Sound goes to toilet and eventually we - the users - who would like to have specific result from cables are getting instead of Assured Sound only the arrays of random marketing metaphors.

I for example need now a 2M cable and I have no financial or any other restrictions what this cable it might be. I have a specific sonic requirement to this cable and I might approach any manufacture in the world to do it for me. So, what?  I am completely disabled not only to get cable but uneven to explore cables because no one sells Sound but they only sell the fucking design concepts… I relay do not see myself with my today’s experience in the field to obtain again a bunch of the cables and to try them all – that is just the very stupid way to do the things.

Why we do not build our cables (any element of audio) in the way how we design bridges? Building bridges we develop precise and predictable characters and we do not do “matching” and “guessing” – we get what we need. Why we do not do it in audio?  Where all those empty academics who can’t make a piece of wire with predicable sound? If I am stupid enough and willing to pay $2000-$10000 for an assmply of $5 wire in a fancy $3 jacket then the people who want to sell me should assure me the predictable result – if not, then they ether should pay me to try their cables and educating them how they sound or… fuck them all.

Am I sounding pissed and unreasonable?  Perhaps, but it is my attitude nowadays. Anyhow, I am listening the 8th hours of the WHRB  Rostropovich’s Orgy and as I feel now any single audio cable manufacture shell hang itself on own stupid cable, preferably the high-current biased cable…

The caT


"I wish I could score everything for horns." - Richard Wagner. "Our writing equipment takes part in the forming of our thoughts." - Friedrich Nietzsche
05-16-2008 Post does not mapped to Knowledge Tree
glaesemann
New York
Posts 22
Joined on 12-18-2007

Post #: 3
Post ID: 7404
Reply to: 7398
Cable length
In the past you've referred to current loading in the context of cable length. I recently experienced this when I experimented with moving my amps. I needed to increase the IC length from 1 meter to 3 meters. The only IC I had at that length was an old Colossus. To my surprise (after settling in) the Colossus at 3 meters was more interesting than the Proteus at 1 meter. I knew that the very low output impedance of the Placette Active made it a great preamp for driving longer length RCA's, but I didn't expect it to sound more interesting.

MOVED TO: http://www.GoodSoundClub.com/TreeItem.aspx?PostID=7405

Though this is off topic from the thread, I'll try a response to your cable frustration (one that I share). Does the specific sound you are looking for exist in an IC you already own? The older Dominus or Proteus fluid Rev, A or B? By benefit of the Japanese documented Proteus dissection, we know how a Proteus Rev. B is made. The trick is the fluid, but a serious lab analysis could show the composition. They may have used an off the shelf fluid, like a brake fluid. Since they used an off the shelf inner cable (still available) for the Proteus, maybe a dissection of the Dominus would show the same thing. The Japanese have already documented the build of the cable from their dissection, so all there is left is to Cryo all of the parts and find someone to build it, like you've done with the tweeters, horns, etc. I'll suggest J.D. of Jade Audio. He builds cables of his own design in his home and is most noted for his solid gold stranded IC's. No copper and no silver. He is not a normal cable builder in one special way. He published exactly how he builds them and even has given direction to interested DYIers in the past, not to mention he is most assuredly not profit motivated. He is in very poor health and the demand for Jade cables has increased, so I can't speak to his availability, but it is worth a shot. The whole endeavor shouldn't cost too much. Purist may not be happy, but it's not your fault that they discontinued the Rev. A and B's. Tim


"I'd rather know than believe." - Carl Sagan
Page 1 of 1 (3 items) Select Pages: 
   Target    Threads for related reading   Most recent post in related threads   Forum  Replies   Views   Started 
  »  New  The ultimate buffer – light in the end of a tunnel..  A few minor corrections...  Audio Discussions  Forum     36  309759  04-28-2005
  »  New  The Melquiades' "Remote Biasing"..  The Melquiades' "Remote Biasing"...  Melquiades Amplifier  Forum     0  16694  02-05-2008
  »  New  Purist Audio Design vs. Purist Audio Design..  Maybe we need phantom power?...  Audio Discussions  Forum     25  172320  04-06-2008
  »  New  We who are about to die... (a cable thread)..  Guy Hammel Would Laugh!...  Audio Discussions  Forum     33  177268  06-28-2008
  »  New  FM and … cables…..  Cables as Sound Shapers...  Off Air Audio Forum     4  29778  04-15-2009
  »  New  The BEST bass cable?..  Dialectic biased cable....  Audio Discussions  Forum     4  31776  04-22-2011
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