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Why Cryo?

What?

A little background on DCT.

1. Deep cryogenic treatment, or DCT, is, and can only be called DCT, if the temperature reaches below -285F. So called "shallow cryo", ie. cryogenic treatment by dry ice, or putting things in the freezer, simply does not produce the results that DCT does.

2. There are two types of DCT, "dry" and another process where the items actually come into contact with the LN2 (liquid Nitrogen, the "cryogen" used). We believe that the "dry" process is better for audio, as there is less risk involved, especially in regards to the potential for thermal shock.

3. Any firm that claims that they are performing DCT and are specifying temperatures higher than -285F, or lower than -320F is simply wrong, or misunderstands the process and mechanisms involved. In order for DCT to be effective the temperature must reach below -285F. And unless they are using liquid Helium, which is highly unlikely, it is not possible to reach lower than -320F or so in the chamber. In addition, the RTD, or other temperature sensor used loses it's ability to accurately track pretty quickly after -310F or so.

So, that being said, what is the process? Properly deep cryogenically treating an object is a painstaking process that takes three to five days. There are three distinct processes that are part of "deep cryogenic treatment":

  • Ramp Down-- The parts are first slowly cooled, using LN2, at a specified, closely computer controlled rate until they are brought down to the target temperature.
  • The Soak-- The parts are then subjected to a very precise program that varies both the temperature and time held at various temperatures for a period of 20-40 hours. The exact temperature reached, the temperature variances and times held have been developed over the past few years by us and are unique to the Locus Design Group. The various programs, or "profiles", that we use are proprietary and designed to elicit the best performance for our valuable audio parts.
  • Return to Ambient-- The chamber is slowly brought back up to ambient temperature. This part of the process is also computer controlled, the temperature ascent carefully monitored.

As mentioned above, during all 3 processes the temperature is carefully controlled via computer as to avoid damage to the parts, frost and condensation. The greatest risk to parts is thermal shock, which can happen if the temperature is brought down too quickly, which causes metal to become brittle, cracking the jackets on cables, etc. Thermal shock is never a worry with a computer controlled chamber.

Why?

Changes occur in the microstructure of metal as a result of deep cryogenic treatment. These desirable changes are why many knife and sword makers use this process as it gives metal a more uniform hardness and greater dimensional stability, due to the conversion of austenite (large unstable particles of carbon carbide, resulting in a large grained lattice structure) to martensite (fine grained lattice structure). But what do swords have to do with audio? Not much...but the same basic principles apply.

When copper, silver, or brass, or any metal used in audio, is formed into cables or AC plugs, the materials develop residual stress. For example, microscopic examination of the copper in an AC cord would reveal many voids in the crystal lattice structure of the copper due to these residual stresses. Deep cryogenic treatment works at the atomic level; as the temperature decreases the atomic bonds start to weaken and the crystal structure of copper reverts to its original state. In addition, the surface of the metal becomes much smoother, ensuring a much better fit between metal pieces.

Who?

Many who sell cryo-treated audio parts have no idea of how cryo-treatment is actually performed, much less why it works.

We perform all of our deep cryogenic treatment in house. We believe so strongly in the benefits of cryogenic treatment of high performance audio that we made the substantial investment in our own cryo chamber. The equipment is very specialized and expensive, but having our own chamber allows us the flexibility to experiment and derive the optimum treatment cycle for all of the parts we sell. Not all parts respond equally to a pre-defined cryo cycle (usually programmed for treatment of tool steels) that 99% of all other suppliers are forced to use as it would be prohibitively expensive to experiment using an outside contractor, unless you own the machine!

Rest assured, when you purchase from us, each part has been treated with the optimum cryogenic treatment cycle or cycles.

Why else should you buy from CryoParts? The principals of CryoParts have a tremendous amount of experience in the high end industry as manufacturers and retailers and, above all else, we love good sound. All of the products that we offer have been extensively researched and tested to ensure their suitability for the high-end audio market. Most importantly, before we offer any product for sale, we listen on a number of reference systems to verify that the process we use is valid and any changes made by the process are for the positive, and not just "different".

Furthermore, we are 100% committed to your satisfaction. We realize every company states this, but do they clearly state their return policies on their web site? Many years of spent "in the trenches" on a retail sales floor has equipped us to offer a unique perspective on customer service and what that term truly means. Feel free to contact us with any questions, we look forward to serving you.

Simply put, we feel that the proprietary processes we have developed, the strict quality control we demand and our dedication to only offering a superior product, result in the highest quality cryo-treated parts available.

For more info, feel free to visit our sister web site: CryoFreeze.

© Copyright 2003-2005. Locus Design Group