[TowerTalk] Copper wire prices

[Jim Lux]

At 01:58 PM 11/16/2006, Pat Barthelow wrote:

> >From: "Rick Karlquist" <richard at karlquist.com>
>(SNIP)
> >They do make insulated aluminum wire for speaker voice coils.
> >I have been trying to find a vendor for that.  It would solve
> >the corrosion problem.
> >
> >Rick N6RK
>
>Waldom, who also makes various small electronic hardware, (screws,
>terminals,etc) was the vendor for speaker parts for Speaker reconing shops.
>I used to have a shop.  The Waldom speaker replacement parts Warehouse was
>somewhere in New York.
>
>The trick wire of the time was "ribbon wire" which made for very efficient,
>sensitive speakers.  They took the round  voice coil wire, say about 26
>guage,  and milled flats on top  and bottom making an almost thin
>rectangular cross section wire  of maybe 1:5 dimension ratio.

These days, they just roll the wire to the required shape.  It's an 
amazing process in a modern wire factory.