Originally Posted by
herki the cat
Looks like you are on the verge of working out the rest of your speaker design which will require enclosure frequency response measurements.This will necessitate covering up that entire tile floor with a wall to wall thick rug, which for good sound absorption should have a wall to wall under-pad of "Ozite"-- Brand Name," wool & cow hair construction. This is the material used by Dr Harry Olsen on all six sides of the RCA Princeton Laboratories Anechoic $1,000,000 quiet room. For the treatment on walls & ceiling, please consult member EarlK's recent excellent LH Forum threads & posts on this subject.
The JBL tube of C.P. Moyen Inc., cement shown in a recent thread uses Acetone solvent which is similar to MEK solvent. Both of these solvents have fumes which will cause the foam in the motor pole piece vent hole to revert to a gooey mess of liquid polyurethane that will find its way to the voice gap.
It is suggested you should call C. P. Moyen Inc., Customer service @ 874-673-6866 to explore an RS Cement of toluene solvent compatible with foam, paper cones & caps. BTW, Toluene IS compatble with foam surrounds.
herki