Bass driver giving off a noise like frying bacon of fairly constant level
compared to varying audio level. They had used epoxy glue and soft contact
glue at 2 different stages of fixing the spider to the frame. Epoxy had
squeeged into the interior forming beads of solid epoxy up to about 10 mm
long by about 2mm that had later broken off and was rattling inside. So
gummy/soft glues only is the lesson . As there is always bits of sub-mm
aluminium oxide etc , but greater than air filter mesh size , inside
speakers, that don't seem to make any humanly observed rattling
interference noises , anyone any idea what is the size that becomes
intrusive ?. In the core that is , not staples etc on the outside. RoHS
stickers all over and all sorts of other problems in the cab but not PbF
isssues (this year)