hey guys, i emailed edesigns over a week ago and still havent gotten anything back from them. when i bought my sub about 6 months ago their site said you could upgrade for $20 while the sub was still under warranty, and now their site doesnt say anything about that. i was thinking about upgrading my edk to a newer style one and then buying another one to have two underneath the seat of my truck. i was also thinking about getting an edA but i dont think i could afford to buy another amp (right now i have a jbl 600.1). but anyways back to the point, i emailed them wondering about upgrading my subs and they still havent replied. i was wondering if anyone else has had this problem? also my k is starting to make some funny noises every so often, and they dont sound too good.