HiFi cable made of at least 24 layers of pure carbon with magnetic field protection
The use of a carbon-only loudspeaker cable with a neutral electromagnetic sheath addresses signal degradation issues in existing cables, achieving superior sound quality with accurate tone reproduction and enhanced transient response.
Patent Information
- Application Number
- DE102023005191
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2023-12-15
- Publication Date
- 2025-06-12
- Estimated Expiration
- 2043-12-15
AI Technical Summary
Existing loudspeaker cables suffer from signal degradation due to electromagnetic field interference, proximity effects, and suboptimal conductor materials, leading to timing issues and tonal displacements in sound reproduction.
A loudspeaker cable composed exclusively of carbon rovings, with at least 24 pieces installed in parallel and twisted gently together, surrounded by a neutral electromagnetic sheath of cotton and/or PTFE, which maintains a strong magnetic field in the dielectric air and minimizes electromagnetic interference.
The carbon-only cable ensures tonally non-shifted signal transmission, enhancing sound quality with more realistic transients, improved stage size, and nuanced tone reproduction, while being sensitive to electromagnetic disturbances.
Abstract
Description
[0001] In the audiophile segment of the hi-fi industry, there's no shortage of complex speaker cables designed to improve the sound of music reproduction systems. An English product from the 1980s, which didn't catch on but is still sold ("DNM Reson Solid Core") correctly separates the two phases of the cable, but immediately ruins the beneficial effect by constructing the cable from "bell wire," a single wire instead of many twisted smaller ones, which is notoriously harmful.
[0002] It is known from DE 41 20 773 A1 that, at the typical conductor spacing between the two cores of a loudspeaker cable, the electromagnetic field (EM field) of one core impairs the current flow in or around the other core due to the so-called proximity effect. In contrast, this patent provides a "metal shield" between the two cores, which, as is known from my own patent DE 10 2021 002 028 B3, in turn leads to a disturbance of the field and thus to a significant signal degradation.
[0003] From DE 43 36 230 C1, it is known that improvements in signal transmission quality can be achieved by paired signal lines that are interconnected at the cable ends. However, this patent also provides for all wires to be routed close together in a common sheath, which is also provided with a shielding braid and a "core" located between the wires. This leads to the cable's own interference caused by the chaos of all the EM fields and interactions with both the neighboring wires and the other cable material. The self-induction, the increase in capacitance, and thus the power loss are immense.
[0004] This also applies to utility model DE 298 02 143 U1, in which the problem was correctly identified, but the proposed solution—silver-plated copper strands encasing a pure copper inner cable—is not a viable solution, since over 90% of the EM field does not move within the cable, but rather in the surrounding air in the dielectric. Furthermore, the PVC sheathing provided in this case degrades the signal due to its electromagnetic properties (namely, the specific electrical and magnetic fundamental constants of the material).
[0005] What all these known proposals have in common is that they ignore some of the physical principles of the known universe, known since Faraday and Maxwell. The proximity effect mentioned above, for example, affects only a minimal part of the signal, and even that which, in an ideal world, would be avoided by superconductivity (= 100% of the EM field is in the dielectric, 0% in the cable), because it degrades the sound due to timing problems in relation to the main signal (the signal component within the outer layer of the cable moves much slower than that in the dielectric, which propagates at the speed of light).
[0006] The signal is by no means transported by electrons in the cable. This widespread misconception, which is still perpetuated everywhere, is fundamentally wrong. Rather, electrons slowly drift chaotically in the opposite direction, rearranging themselves in the conductor. The actual signal is an oscillating electromagnetic force field propagated by the free valence electrons in the outermost layer of the cable material!
[0007] Now, copper, which is so often used as a conductor, has only a single valence electron in its outermost shell. This makes it suboptimal. According to my research, a signal transmitted by elements with four valence electrons in the outermost shell is measurably stronger (EM field) and audibly more accurate.
[0008] This explains the sonic superiority of tinned copper cables (Western Electric, then out of fashion due to price reasons, now copied and improved by the Danish company Duelund), which was already known in the 1950s and which no one has yet physically explained.
[0009] The second element with four outer valence electrons, besides tin, is carbon (which is why it's so reactive and the basis of all life on this planet). A Dutch patent NL8801535A from 1988, now expired, envisioned the use of carbon together with other—metallic—conducting material in a cable that was itself magnetized by a coil (complete nonsense!).
[0010] The Dutch company vandenHul is the only company to date to build hi-fi cables based on this principle. These cables, as can be verified by listening tests at any time, are characterized by first-class impulse response, but also by undesirable tonal shifts. As far as tested here, every single note played through these cables is audibly off; the frequency shifts, like those of an out-of-tune grand piano, can be measured precisely in Hz and are completely unbearable for people with perfect pitch.
[0011] What would be even worse would be the consequences of the carbon-based cable patents that have so far defined the state of the art in other areas of application if one tried to use them as microphone or even system cables - as is sometimes casually suggested in the patents en passant.
[0012] In detail: WO 02 / 001 580 A1 relates to the invention of an electrically conductive cable made, among other things, of carbon. The aim of the invention (that carbon is inherently conductive has been known since Edison) is to overcome the material-specific problems of carbon—brittleness and tendency to fan out—by admixing other substances. To this end, a carbon strand of "12,000-24,000 filaments" is twisted and coated with layers of "ferrite-impregnated silicone" (9., 11.) as a "shield." Aside from the fact that such a thin strand would be incapable of transmitting even a single tone with anywhere near natural fidelity due to its enormous internal resistance (100-1,000 times higher than copper, for example), the use of ferrite renders it completely unusable for musical applications due to a throttling effect. Ferrite has a permeability and permittivity of approximately 1000-10,000 each.
[0013] According to Maxwell's formulas, this slows down the electric field from the speed of light to walking speed, as the field hits the ferrite molecules and is slowed down by them, according to Maxwell, to c divided by 10 to the power of 3-4 times 10 to the power of 3-4!
[0014] Also from the automotive sector is US 2003 / 0 098 614 A1, which aims to replace the power cables inside vehicles with two insulated layers of carbon fiber throughout the entire body beneath the sheet metal in order to supply consumers such as light bulbs or electric motors with working current. Apart from the use of the same natural element, this has little to do with the present application and is completely unusable for its purposes.
[0015] CN 1 05 244 116 A is at least closer to the topic. It concerns a manufacturing method for particularly durable, age-resistant cables, for which carbon is correctly used. To do this, a 0.5-2 mm thin strip is wound mechanically and wrapped with fiberglass. This inner strip, however, consists of a mixture of carbon and epoxy resin. The latter has a dielectric constant of 4, a high dielectric loss factor, and, due to its molecular structure, also a high magnetic susceptibility. The result is therefore completely unsuitable for signal transmission, and accordingly, there is no mention of it in the application.
[0016] My invention, however, dispenses with ANY other elements and is constructed EXCLUSIVELY of carbon rovings. At least 24 of these are installed in parallel and gently twisted together. The carbon roving bundle is surrounded by an equally electromagnetically neutral sheath made of cotton and / or PTFE, which also has virtually no influence on the signal transmitted in the field.
[0017] According to my patent application DE 10 2023 001 225 B3, this alone ensures a tonally unshifted signal transmission.
[0018] It can be used as a speaker cable, as an RCA or cinch cable between the components and as a bridge for speakers with more than 2 connections.
[0019] This cable exhibits a measurably stronger magnetic field in the surrounding air dielectric and is therefore particularly sensitive to interference with this field from surrounding materials. The pure carbon cable is audibly sensitive and therefore requires, in practical applications, a magnetically neutral aluminum / magnesium spacer, thanks to its dielectric constant of approximately 1, in accordance with my patent DE 10 2021 002 028 B3, which keeps the carbon cable completely free from electromagnetic contact with its surroundings.
[0020] Even the highest-quality hi-fi systems sound significantly more energetic, clearer, more accurate, and more tangible when using my invention. Transients are much more realistic, the reproduced stage size increases significantly, the sound and positioning of the instruments involved are noticeably improved, and each individual note becomes significantly more subtle, complex, and rich in nuance. Even the smallest sound events become perceptible, which are lost with conventional solutions.
Claims
[1] HiFi cable made of at least 24 rovings of pure carbon with magnetic field protection, characterized by following features: - Only carbon rovings are used as conductors - There are no metallic components in the HiFi cable - At least 24 rovings carbon are installed in parallel - They are kept free from electromagnetic contact with the environment of the HiFi cable by a suitable magnetically practically neutral spacer - They are surrounded by an equally electromagnetically neutral sheath made of cotton and / or PTFE
Citation Information
Patent Citations
CN000105244116A
Paramagnetic cable carrier for hi-fi applications, especially for speaker cables
DE102021002028B3
magnetic field shielded speaker cable
DE29802143U1
Loudspeaker cable - has electrical conductor screen between signal conductors in insulating sheaths
DE4120773A1
AC cable with low-distortion transmission
DE4336230C1
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