On 10/02/2016 20:37, Gareth Magennis wrote:


"N_Cook" wrote in message ...

In for a horn problem, but also loose bits inside rattling around.
These are 2 coppery looking monkey metal flanges from the speaker bolt
"hank" bush/anchors into the plastic. They seem non functional, the
bolts will tighten without the remaining bush turning. 7 of the 8 bolts
would take a 1/4 turn tightening fully again. These flangey closers look
as though they are deformed in the tightening process and then burst
away at some point. Hammer and old chisel to break off the remaining six
? concerned about shearing the functional part of these monkey metal
bushes with hammering action.



I've tried to work out what you are saying here, but I am coming to the
conclusion that whatever you are describing is not OEM.
Perhaps someone has put some stuff in there

I have worked on a few EV SX300 and as far as the bass driver is
concerned, 8 bolts go into 8 t-nuts embedded into the plastic housing.

It doesn't get much simpler than that.


Gareth.



My previous would not work, these are more like hank bushes, the barbs
bind , or not, into the plastic surround and those flanges provide the
reaction force, or not now.
I protectively knocked one of the broken ones out ; without the back
flange , the barbs will bite in more and bolts slacken until dropping
out with vibration, regardless of how much torque on the bolts. There is
no metal skirting in the plastic surround and eventually the barbed push
part would move until touching the speaker rim, so no anchoring.
I'll take a pic of these bush anchor things tomorrow and upload.
I'll run a large amount of hotmelt over the remaining 6 flanges, to
retain them in place if they break, and longer Allen head bolts and
washers and lock nuts for the broken 2 fixings.