While we are on the subject...

I have a pair of smaller subs I got a while back. How do I tell if they have megawoofers or not? I am guessing the OMG drivers would not fit?
how hard is it to replace the drivers? Do I need to take the cabinet apart/
Thanks!
The SMALLERS were before my time, but if the active drivers are made from WCF (woven carbon fiber) chances are it is a version of the MegaWoofer.
It is actually quite easy to remove and replace the drivers.
You simply remove the screws, take the driver out, and disconnet the leads (making sure to note which goes to which speaker terminal)
It is best to take the PR out first, so you can apply pressure to the active driver from the inside if it is sticking.
Brian could tell you more accurately if the OMG would fit, but more than likely (since they generally have a larger circumference) it would require surgery.
Your best bet is the 12" ULTRAMegaWoofer, and BB PR.