Ok i have a 3 part question for everyone out there. First my front Heresy's over the past weeks have developed a "rattle /crackle" but only at high volume levels,but seem fine at "sane" levels . Upon further inspection the woofers seem to be ripping away from the center / dust cover. I suspect that this is the distortion that hear. Can this be fixed? (with glue or whatever)as they seem to be intact and still attached underneath . or is this a decay that will only get worse and i should just order the replacements (and be over with it) which are 80 bucks each at klipsch ???? Any suggestions would be great....Second my front heresys seem to put out A LOT more base than my rears (also heresys) i have swithed em around and the older ones (the damaged ones) are from '79 ??? (u) have more base than my newer ones '83 ???(y) is this possible??? has anyone else ever noticed this or do I have something else going on ??? Third if I'm driving thease too hard maby i need to upgrade ?? what should i be looking for ??? corn walls, forte's, la'scalas ??? its been sooo long since ive heard any of them..... I love the punchy clear&live sound of my heresy's and i don't want to give this up , any sujestions???