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Refoaming problem I cannot fathom

This sounds like the problem is electrical. As mentioned above, check the terminal leads, the tinsels and finally the voice coil connection. Do the voice coil tinsel leads terminate on the cone then to the terminals? Check the connection at the cone.
 
Terminals and tinsels ok, still attached to the cone, and the voice coil seems good, too.

I used acetone to loosen and lift the glue holding the outer ring. Putting the woofer on its back with the outside surround disconnected, my audio test produced no buzzing and no cutting out. I then presume that the problem is the cone rubbing the voice coil.

Following advice given here in AK, and on the Decware.com refoam page, I cut the dust cover around 340 degrees, leaving a connected edge to fold it back out of the way. Then I inserted four shims into the voice coil made from small strips of index cards. The cone now would not go up or down, and the spider was level. I re-glued the outer edge of the foam ring, and it is now drying overnight. Tomorrow morning (Saturday) I will take out the shims, check for rubbing, and lay the woofer on its back for an audio test. If all is well, as I think it will be after the shimming, I will re-glue the flapped dust cover, and let it dry for several hours.

I will report back here, but I suspect that you all have helped me identify and solve the problem. If so, I will break them in for a few hours before I take them to their home. My father-in-law will be very happy to have his Boston Acoustics A-60 pair up'n'runnin' again!

I will let you know. Thanks to all who contributed to this thread!
Sax and Guitar
 
Sax & Guitar said:
The only other thing I can add is that his basement was very humid, and that screwed up his turntable. Could the voice coil be damaged by the moisture?
Click to expand...
The cone is warped from the moisture and gravity. That may have also induced warpage/misalignment in the damper/spider.

If you properly shim the voice coil at this point, the surround won't be even around it's circumference where it's supposed to attach to the frame.

I'd be seeking a replacement woofer.
 
I am afraid, bowtie427ss, that you may be correct. After removing the shims this morning, I still had the buzz. Perhaps the outer seal of the cone was made too tightly, because I can now put gentle pressure on one side of the cone, and the buzz goes away. I will attempt the repair one last time before "throwing in the towel."
Sax and Guitar
 
You could try mounting the woofer in such a way that gravity counteracts any misalignment. Sometimes this is enough to get a marginal woofer working.
 
Yesterday, September 1, I got back around to working with this testy Boston Acoustics A-60. Needless to say, my frustration level, as detailed in this thread, had led me to consider replacing the whole woofer assembly, but I decided to give it one last attempt first (my fourth on this single speaker).

I put 6 shims in the VC, not 4 like previously. Then, having an idea, I pushed down on the cone a bit, leaving it a bit depressed while I glued down the outer ring of the foam to the basket. After a two hour wait, I pulled out the shims, adjusted the cone to its correct position, and remounted the woofer in cabinet for a test play.

Success at last! Thsnks to all who helped in this thread!
 
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