Quote:
Originally posted by tedcmiller
If the speaker contacts are plated and solder doesn't adhere, you can gently remove the plating with emory cloth or a small fine file. Then be sure to use rosin core solder.
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There is a good chance they used copper as the base material for the contacts.
It is possible that they did not.
The speaker's internal wire connections could have been ultrasonicly welded to the back side of the contacts, which means this material might not be solderable.
In any case, do NOT put much heat on the contacts!
Practice on something else first, or seek help if you can't seem to get it soldered quickly.
Or - you may want to order more of the speakers :-p
I would suggest looking at Radio Shack for adhesive backed copper foil to replace the circuit board's function. If it is too thin and won't stand up high enough to contact the speaker's contacts, consider adding some adhesive backed foam underneath it (craft store?).
Just be sure to do your solder to the copper foil before laying it down.
One last thing - copper will oxidize. A light, smooth coating of solder (use lots of flux and then clean it up afterwards) in the area of where the speaker's contacts will touch will prevent bad connection headaches latter.
Again, good luck.