[Arran]

I have used the solvent based general purpose contact cement for years, with few issues, the Bonafede speaker cement is pretty much the same but is tinted black to blend in with the paper. I think that the water based contact cement might work as well, as would the fabric glue, flexibility is what you need for repairing the hinge/surround since it has to move, along with the cloth spiders. One thing you should NOT use is silicone, that belongs around the bathtub not on a speaker cone, I don't know where that idea came from in it being useful on speakers but I have had to scrape the rubbish off more then once to repair a speaker properly.
Regards
Arran