DougW proclaimed:

> RCSnyder did pass the time by typing:
>
>>RTV silicon. Sometimes sold as adhesive and others times as sealer. Really
>>shouldn't make a great deal of difference in this case how it's labeled. I
>>used Permatex' clear variety and paid about $3 at Wal-Mart.
>
>
> it "should" work. I say should because if the failure was mechanical in nature
> (like bending a paper clip too many times) then the surrounding material is still
> in good shape. But if the failure was due to deterioration (heat) like headliner
> sag, then it's like gluing sand to sand.
>
> I look forward to hearing the results after a few weeks/months of operation.
>

The OP said these were foam baffles, which may be a confusion in terms.

If the foam that is damaged is part of the speaker suspension, best bet
is to pick up a "foam rot" repair kit from any of the audio geek local
or online sellers. There are kits for specific speakers [generally home
audio] and kits that can be used on pretty much any speaker of similar
size and foam surround characteristics. The foam rot never gets
better, so unless the damage was purely due to mechanical causes, the
RTV will be temporary. You can also get small amounts of adhesives
specifically intended for attaching foam surrounds, rips in the cone
itself, etc. which often also come with paper and cloth repair patches.
If the problem is just the foam gasket that pads the speaker in the
mounting, pretty much anything works, including sticky foam tape.