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Bud - Do the number of twists in the bundle make a difference? I've made number of these loops to experiment with, but I think I may be twisting them too tightly - usually quite a few twists to make the bundle as tight as possible. Perhaps I should try a looser bundle?
The GC's that are made for sale utilize #40 AWG. This just drops the RAC # down to that of the RDC. Makes it easier to get what you want out of all of the materials. However, there is a good balance possible with any wire gauge and dielectric material. For some it is just very hard to find and big steps away from what doesn't work can be helpful. Bud
Her's my experience. I am using 20" lengths of twisted pair 24g FEP insulated wire from some CAT5e plenum. These are simply cut to length, stripped and the stripped ends twisted together. My speakers are set for bi wiring and so have 4 binding posts per. The speakers are bi wired. I attached two of these loops per speaker - one for the high negative binding post and one for the low negative binding post. Dead simple. Building these and applying them took me about 10 minutes. I used 2 pairs of solderless bananas like these http://www.radioshack.com/product/index.jsp?productId=2123188 to make applying the loops as simple as possible.
Here's my experience.
I was just about to ask you what your experiences actually were AB, but you beat me to it and modified your post with that most crucial information. Good show AB. Cheers,Robin
Whew, Bud ... speak Engerlish why don'tcha! I have no idea what you mean.
What, I have to invent something as ridiculous as this is and also speak engrish toda troops? Fah!Ok, so RAC is the AC equivalent of DC resistance, which is RDC. Dielectric materials have two very important characteristics with respect to tone and transient information in a coherent AC signal. When an electrical, field under the control of information, changes it's vector, the signal that is this field stops at some convenient electron in the wave guide (copper wire etc.). The electron in question is phase changed in spin and angle of polarity to suit the signal and this change is reflected in a local electron, around an atom on the end of a dielectric molecule. This dielectric material has the ability to pack more electrons per square centimeter of wave guide than does vacuum. Thnsi is called dielectric constant. There is a time to charge and a time to release to this packing process. There is also dielectric absorption which has a charge threshold for adopting a reflected phase and polarity angle and to a degree a reluctance to release this reflected position. These are relatively low level events, when we consider typical signal levels in our speakers and cables, but when these two characteristics are not particularly low information can be lost. This charge that couldn't find a vector change home is a coherent part of an electrical field and the coherency has an information relationship. The lost charge becomes noise, with reference to the coherent signal. Enough of these losers and you have a change in tonal gradient portrayal of notes and transient gradient rise and settling time characteristics. When this happens on the positive going portion of a wave form, we recognize it. When it happens on a negative going portion of a wave form we recognize it. Just think of what live, natural sound would sound like if it perfectly mimicked your speaker system. The positive going wave forms are near to perfect, but the other half are not so much. If you added that missing information back into reality what would the audible consequences be.Now go read what folks who are doing this with Ground Control and their speakers and audio equipment say they find as the benefit. And then note that at these tiny signal levels the relationships between charged plate (copper wire) and local and distant dielectric materials is subtle and easily compromised. Very easy to have too much plate surface ratio to distant dielectrics and not enough to local ones, like bare copper wire and plastic insulation in Zip cord. This makes it much more difficult to find the ideal relationship that provides enough retention of signal coherence on the negative going wave form for you and I to recognize that something has changed and also, that we like the change.
Bob and Andy and world,Please note that what you read is a postulate, nothing more. This is just what seems workable to me and does allow me to propose solutions to particular driver problems that fall into the categories these things can remedy. The problem usually found is that a wide range driver, say a Lowther PM6A, will have superb retention of small signal information up to 8 kHz. To "tune" for this driver I would vary the amount of the three types of capacitance that I allow for in the Ground Control devices to enhance the retention above 4 kHz. This will offset the difficulties the driver has in this 8kHz and above region, without causing problems below that region.
Andy,I would try longer for lower, shorter for higher. I have no experience with Cat 5 cable and do not know what dielectric material is used, so this is where I would start in an attempt to characterize the materials.Bud
Bud,a lot of Cat5 is teflon insulated the two types I am playing with are teflon dielectric. Scotty
