oh i got to pulling them apart and saw some interesting things.... not that it matters much but who knows this might be helpful. One was a comp coil something like dual .7 and the other was the daily coil something like a 1.4 (didnt test em) one sub had quad soft spiders and the other had quad stiff spiders, both coils had no discoleration whatsoever but one blew by breaking a tinsil lead and the other had a big ol burn/melt spot on the inside of the former along with what looked like heat issues on the outer top of the former (odd)