Heat effect on silver...?

Hello there people,
I was wondering if someone could help me out.
What would be the effect on 99.99% silver wire if you put the
silvercable in a oven at 250 degrees Celsius for 1 hour and step down with 25 degrees Celsius every half hour.
I am asking because i have an interest in HIFI and music and im taking part in a bulletin discussion about making silver hifi cables. A few of us have made these cables and found them to sound much supperior to copper (this is rather well know within hifi circles and elsewhere im sure). But now someone has come up with the idea of heating and allowing to cool under the conditions above and say that it sounds better. Now i did a little bit of mettallurgy at uni but dont remember too much so need help.
Anything like that size of grains and quality of grain boundarys all have an effect on sound quality. Infact a lot of expenive hifi cables these days are drawn v slowly to try and give a single gain of copper or silver and therefore remove the effect of grain boundaries.
Thanks for any help
Paul
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Wella wrote:

Internal stresses might be reduced.
Michael Dahms
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In pure silver 250ฐC is enough to anneal the wire at least partially. Effect of this on audio cables practically zero as for most such ideas. How about cryogenic treatment this is supposed to be good as well.
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Annealing tends to have a positive effect on conductivity at low frequencies ( all audio is low frequency). So long as the annealing doesn't cause surface oxidation which can inhibit conductivity at low freqs. and completely ruin it at higher frequencies.
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Sounds like voodoo metallurgy. IN the case of Fine Silver(99.99), annealing the wire, assuming that is is hard, will reduce electrical resistance (improve the electrical conducitivity several percent). Will this improve the quality of the sound? If reduced resistance improves sound quality, why not just use larger conductors that would outweigh any small deviations in resistivity of the wires? Can the quality of the sound be measured or is this just opinion of a well-tuned ear?
Cooling down in steps from 250C will have no effect on electrical properties of the wire. There may be an issue with decoposition of silver oxide , but im not sure if silver oxide forms at 250 C ... look at a phase diagram If you believe grain size is relevant ( I don't), start with higher purity silver and anneal the crap out of it to produce large grains....this wire will be very very soft and may be difficult to handle.
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Spend your money on a decent crimper or a soldering iron if you want to improve your sound.
The difference you get in the showroom system is a specially prepared noisy skinny cable with hiden removal of the shielding and high resistance joints compared to a thicker cable that you could make yourself out of a couple of bits of fencing wire and still get improved sound.
If you increase the thickness of the cable to a 4 inch busbar, then you will have much lower resistance than you could afford to buy in silver.
Hope this helps, Peter
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