I'd purchased a project 2 stack, (FH-1, MB-2, MF1-X), and then one of the 1504-4 woofers went out.
I pulled it, and noted that the cone was frozen.
Another gentle push revealled that it was frozen to a point, then would break free and move... but seemed 'dampened'.
Not what I expected from a high compliance woofer of course.
So, disassembly ensued, and what I found was a trail of black tar-like goo on the inside of the former, and within the VC gap.
So "what's the goo?" I thought... it's a sealed folded horn... the plywood inside is as untouched as the day it left the factory.
I realized that it is most likely the decayed foam weather stripping used to seal the doghouse hatch.
*If the vented pole piece contained foam, it could also be from there. Although the goo I see around the pole piece I suspect was melted as it was sucked in.
I was able to get the goo off of the former inside using MEK, but how to get the stuff out of the pole piece will be a trick.
Short of pouring MEK in there (and I don't want to breathe in any more of those fumes... they are bad for you kids...), there appears to be no option (e.g. for disassembly of the pole piece).
Q-tips work somewhat, but cannot get fully into the crevaces and must be disassembled before they fit well. I've considered dipping a 3x5 card in MEK and running it through the gap... but then we have that hazardous fume thing again.
Any suggestions mechanically, or for another type of solvent or ?
Will try to get a pic up shortly...
Last edited by gearfreak on Sat Nov 08, 2008 1:13 pm, edited 1 time in total.