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Old 21st September 2006, 12:50 AM   #11
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I used copper on my Aikido line stage because I ended up with a large piece from my fathers garage after he passed away. I wish that he could have seen the effort that I put into the project trying to make it half as good as he could have with his eyes closed.

It was my tribute to a great machinest and father. I never did get around to making a proper copper VC knob. Everytime I use it I think of him.
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Old 21st September 2006, 12:56 AM   #12
jarthel is offline jarthel  Australia
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polished aluminum would look very cool too?
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Old 21st September 2006, 12:58 AM   #13
poobah is offline poobah  United States
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You know what is cool... is engine turning. And it is easy!

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Old 21st September 2006, 02:01 AM   #14
v-bro is offline v-bro  Netherlands
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Quote:
Originally posted by tubelab.com

In theory copper has a higher electrical conductivity than steel or aluminum
Quote:
Originally posted by jaymanaa
However, Morgan Jones warns about using Cu and Al together in "Building Valve Amplifiers". If the two touch, it can cause corrosion (electrolisys, I beleive?)
Some manufacturers of loudspeakers use copper plated aluminum voice coil wire, but I suppose there's a special process to get that done ... They propagate it increases conductivity....

There are also transparent powdercoating methods (that wont turn yellow) don't know if they're suitable to put on copper though.
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Old 21st September 2006, 10:45 AM   #15
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Quote:
Originally posted by burnedfingers
I used copper on my Aikido line stage because I ended up with a large piece from my fathers garage after he passed away. I wish that he could have seen the effort that I put into the project trying to make it half as good as he could have with his eyes closed.

It was my tribute to a great machinest and father. I never did get around to making a proper copper VC knob. Everytime I use it I think of him.
Very nice amp, and a great way to remember your father. My dad was TV repairman back in the days of tubes. I have one of his Simpson 260s, which brings back fond memories every time I use it.


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Old 21st September 2006, 04:47 PM   #16
kevinkr is offline kevinkr  United States
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Home page of my site has a picture of an amplifier product I used to make.. Full copper chassis with powder coat finish, I've not seen any of them lately, but not having received any complaints I have to assume the finish has held up well. They were hideously expensive to make and not that profitable either..

Copper is very difficult to drill and punch as it deforms so easily, and because it is soft it clogs bits quite easily. IMO nothing scratches more easily either. AND imperfections are more visible than anything else I have worked with.

It is attractive, and imo for whatever reason amplifiers built on copper or aluminum chassis seem to sound slightly better than the same thing on steel.. IMHO.
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Old 21st September 2006, 05:26 PM   #17
poobah is offline poobah  United States
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You know guys... Yellow Brass is the ultimate for machining. It also clear coats nicely.

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Old 21st September 2006, 06:38 PM   #18
Klimon is offline Klimon  Belgium
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Gimme copper for looks, wood for sound! No eddy currents and other thingies giving a closed-up sound... I've realised I'm pretty alternative here as most people don't see any problems in metal as long as it's non-magnetic.

Simon
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Old 22nd September 2006, 10:50 PM   #19
v-bro is offline v-bro  Netherlands
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pretty alternative? I know a guy who owns "art speak" a modding company, he puts cork mats in amps(pieces of cork floor tiles) against the metal plating.

He also invented "The Mat" a round slice of very thin dampening rubber to put on top of a cd (disc) or dvd, it would give better sound and vision.....

He also sticks pieces of some kind of foam on top of IC's or op-amps...

Maybe this guy is just insane, but he has lots of "believers"....
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Old 22nd September 2006, 11:32 PM   #20
poobah is offline poobah  United States
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