I just noticed a rattle in my RHS Sub1500 so I dropped out the driver for a look. The first thing I checked was the spider attachment to the frame as that is what detached in a previous driver I had.
http://www.audioheritage.org/vbulletin/showthread.php?2558-Sub1500-problem&p=86529&viewfull=1#post86529
This one uses the white glue (not the suspect yellow glue) and the attachment to the frame was fine. I reconnected to the amp and fed in the 30Hz alignment tone I use for re-foaming and with a torch I could see the spider detaching from the central voice coil former. So white glue is a bad as yellow.
I still have some Loctite 422 in the fridge from previous problem (which I still use for odd jobs) but as it is now 4 years old I better get some new glue. I have seen 5019 recommended here but data looks very similar to 422. Any other suggestions?
http://www.loctite406.com/template/ying/pdf/docs/5019H-EN.PDF
http://www.sjgogo.com/pdf/422-en.pdf
Pictures below are 1) normal & 2) with finger lightly pressing spider down.
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