Just a short question. Where should i get the OFC wire and how thick sould it be?
Thanks.
It depends on where you are and what type of cables you are looking for. You can get them from ordinary electronics shops and audio shops (if they are reasonably prices).
From any electronics shops, you can find auto/DC power cables, speaker cables and A/V interconnects which are made of OFC. Some audio shops carry good quality solid core OFC wires with acceptable prices.
The quality of the materials does make differences so that go for the quality you think it's reasonable to your budget and quality of other parts in your system. Though, the construction (solid core/twisted pair/stranded/coaxial/shielded), dielectrics (PVC/teflon/air) and layout/fixtures (relating to EMI) makes more differences to me.
I prefer twisted pair/solid core and use as short wires as possible. Multistrand is not good, in my opinion. It was introduced for flexibility, which is not the primary concern for diehard audiophiles. Rather, multistrand introduces complicated interaction between strands and behaviours in electronic/magnetic frields. So, I use solid cores as where as possible, which are also better resistant to vibrations in EM frields.
Silver coating for audio signals does not make much sense to me. Though the signals of various frequences travel at different speeds through different paths in different conductors, I doubt the silver coating could complement it and reconstruct a better envelop of the audio signals, rather creating heterogeneity in the conductor and providing a super highway for RFI, which primarily travels at the surface of a conductor. At audio frequences, the skin effect is very subtle, I think, which could be well masked by other effects resulted from components variations and EMI. So, I always go for pure copper. (But gold coating on connectors are good to keep a clean hence better contact. Keeping a good contact conneciton is essential. That is why some cleansing/corrosion prevention/electrical conductible liquids, or snake oils, can improve some bad contact connections. If the contact is good enough, it doesn't make any difference. And that's why it doesn't make any difference to some people with perfect connections so that they never believe it. The quality of a good contact connection depends on many factors including contact type, contact area, pressure, contact materials, age, air pollution in your local area, humidity, vibrations, electrical idle time, typical current patterns etc, etc. So no contact is the same as another thus the effects of those "snake oils" vary very much, and people start to fight over this by JUST basing on their own experience. I don't use any contact oils but always make sure the connection contact is good - large area, good pressure, clean surface etc. Good pressure is important.)
Silver coating is no good but silver solder is ok as it is homogenate. However, solder is a bad conductor. With so many unavoidable solder points around, that's why I don't warry too much of the copper purity. Just get wires of reasonably good quality and keep all wires as short as possible.
Copper is the second best common conductor. If you think it's not good enough, go for pure silver wires. Pure silver wires do not have the drawbacks of the silver coating over copper.
In wiring, don't allow wires flying in the air and prone to vibration, which interact to EM and generates signal noises. This is part of the reason why some people find the case vibration isolation make difference even to some SS amplifiers. Keep the wires as close as possible to the earthed case surface is a good idea for EMI reasons too.
The above is just my way to look at wires.
(Some of you may find that the coated silver wire does sound better in your system. It is possibly true and the reason is more possibly that the effect of coating just happens to complement some flaws of your system and results in an overall balanced sound. My approach to this kind of problem is rather to use coating to balance it but correct the system flaws within the system and use a neutral wire.)
Sorry to give you a rather complex, off topic answer to your short question.
