[mikegett]

The dude is insane if he thinks contact cement won't make a difference. First, a sub with any decent wattage will rip the contact cement right off. The stuff we use on the subs are high grade rubbers that bond chemicaly. Secondly, a surround has to be linear. If one portion does not expand and contract at the same ratio as the rest distorion is introduced. This is the same as your gain settings. You may not hear the distortion but it can eventually kill your voice coil. There are many companies you can check with on the net about re-coning and new surrounds. First, try JL and compare the prices. You payed for a nice sub, now it is time for bib daddy to give it the respect it deserves.