Look at cotjones sig everyone. Once he gets rid of the mess he has now and gets an 18" xxx i will make a thread for the most improved enthusiast of the year..
On the issue of keeping the coil linear, I once saw a woofer that had a spider on the bottom end of the coil. Does that not work well? Or is it just an unexplored idea?
However all the spiders in the world with literally NO deflection would still have issues in these cars...the boxes by nature build a lot of pressure spots that either cause the soft part arrangement to fail (cone shatter, no matter what material it is) or a surround blows off...or the spiders eat themselves..
Pretty much name it, you have to overbuild the heck out of subs to get them to hold up to the extreme pressures //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Regardless of where the spiders are, or how many of them there are, the cone/coil assembly is still going to rock.