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The common belief is that the cable is a totally passive part of the audio system. This is perfectly incorrect. A cable is a passive electrical circuit whose parameters have an influence on the electroacoustic loop. In most cases, you will need to change the tonal balance of your audio system. All cables affect tonal balance but some in a different way than others and can better fit your electroacoustic system in your listening room. The rules for calculating cables have been known since the very first years of electronics. These are very specific rules that govern the operation. The fact is that a cable is not a tone control. The La Rosita cable applies rules inherent to low frequencies. All this is true regardless of the metal or dielectric used. Everything is a matter of calculation and you have to know what a cable is for.

Learn more about cables

You're browsing the Internet looking for the right equipment to improve your audio system: if you look at High Fidelity manufacturers, sound quality (and silence) makes the difference. So what kind of cables should you use? Hi-Fi cables are often expensive, and the increased sound quality they are supposed to provide is rarely proportional to the expense. If there is anything else you need to know is that the "technology" of cables is not new. In fact, all we know today about the movement of electric current has been described by Georg Simon Ohm, a German scientist who died in 1954. All drivers are said to be "ohmic", which means they have resistance intrinsic which creates a force opposed to the flow of electricity. Supra conductors do not have this resistance but this property only occurs at temperatures below 250 ° C. The intrinsic resistance of the cables is the main factor prejudicial to the reproduction of the music. We spent a lot of time and effort analyzing many "better" cables and, frankly, the sales pitch for these cables is more theoretical than practical. What is true is that the properties of an audiophile cable are as good as the metal from which it is made. There are indeed many different qualities of copper and silver. Without having to be technical, the copper used for plumbing is obviously not suitable for hi fi cables. Ditto for silver, because it is a soft metal that must be mixed with other metals to be manufactured, the quality of the alloys used for this purpose is also important. In this regard, many manufacturers will refer to the so-called "skin effect" for selling so-called high-speed cables; this is misleading. The velocity of the electrons is indeed greater at the periphery of a wire, and slower towards its nucleus. But on the periphery of the cable, you will only get the maximum speed of an electron; the speed of the electrons can only be accelerated if you use a particle accelerator. Moreover, this difference in speed is inevitable whatever the metal used in the wire, and will only affect the behavior of the electric current at very high frequencies, that is to say between 250 kHz and 400 kHz! Such frequencies, barely measurable by specialized equipment, are inaudible. Remember that sound reproduction takes place in the low frequency spectrum, that is, between 15 and 25 kHz; and it's a generous range beyond which the sound is inaudible. The point is that multi-wire cables designed to increase the number of peripheries will only carry more inaudible frequencies. We analyzed the quality of the signals carried in the low frequency spectrum (currents, voltage, average impedance and distances traveled), and the results confirmed that a very wide range is available for all the relevant parameters well before the disturbances where a influence on signal transport and its integrity occur. In conclusion, buying a big and therefore expensive cable adds nothing. Another step concerns the purity of copper used in the cable because it is deoxygenated, often called "OFC" (Oxygen free Copper). But deoxygenation is simply the result of the process of electrolysis used to separate copper from other alloys and the impurities that are there when it comes out of a mine. The electrical wires in your home are also deoxygenated. Another parameter that may be important is the impedance of the cable. But a cable will never have a substantial effect on the impedance matching between a unit of a sound system and the units that are upstream and downstream of it. Impedance problems are solved by properly selecting the units of a sound system whose respective impedances are compatible (especially if you are using units from different manufacturers). Another parameter is Pierre Johanet's MDI (or Micro Discharge Interface) theory which describes the effects of the interaction between the copper wire and the insulating material in which the copper wire is wound. The interaction creates a kind of halo of particles surrounding each cable, the behavior of which can be modified by the mechanical excitation of the air created largely by the loudspeakers of the sound system. This may affect the current flow, although there is still little certainty as to the nature of the halo. But the plating that covers most cables (usually plastic or expensive alloys) is not only inefficient, it can even aggravate the phenomena of interaction. A cable for audiophile system should not be a beautiful object that looks like a jewel, it should simply be built to be as transparent as possible taking into account the basic rules of the construction of a cable (especially electric current behavior passing through an alloy wire) used for music reproduction. Our goal was to create a cable as transparent as possible; in other words, a cable that would behave as if there was no cable between the different units of the sound system. So, how did we create La Rosita cables? We used a very high quality copper silver which also ensures that the copper surface will never be oxidized We used only three yarns with a relatively thin gauge that reduce the cost of raw materials We used the surrounding air to act as an insulating material. This is done by "trapping" a film of air around the copper wires by wrapping them in cotton and silk. The silk is laced with a special "handle" that prevents any slippage of the cotton on the surface of the thread. In addition, cotton has natural qualities of waterproofing. The result is a fully transparent cable at a fraction of the cost of high-end audiophile cables.

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