Aluminum voice coil repair

[dobias]

While assembling my Wharfedale 12CS-ALs into their new open baffles I wound up breaking the wire to the voice coil on one of them. I never realized the voice coil wire was so fine. It was as small as a hair! What was worse was it's aluminum making it brittle (compared to copper) as well.
I've found there is no good way to solder aluminum so I resorted to tying a fine copper wire to it & holding it together with epoxy.
So far, so good.
If my repair fails, I'd like a plan B to fall back on.
Does anyone have experience with the conductive paint from RS, or any way to connect a wire to the stub. It's now short because it kept breaking off while I tried repairing it.
If there are any replacement cones, I'd like to know about them.
dobias

 

[Wafflesomd]

The voice coil itself is destroyed? Or the wire running from the mount to the voice coil?

 

[dobias]

voice coil repair

wafflesomd,
It's the wire that connects to the flexible connection to the cone & lies inside the cone down to the voice coil proper.
I believe it's an extension of the fine aluminum voice coil wire.
dobias

 

[Rickster71]

Hi Dobias,
You will have to get the voice coil rewound.
Soon corrosion will form between the two dissimilar metals (copper / aluminum) and the conductivity will be lost.