I had 2 12" JSW's and they took a beating and still sounded brand new. They were 5 years old before I got them and still sounded great. I'm very particular about sound quality. I had a tma amp which was a jl audio off brand that was 360 watts bridged. I listened to rap at the time.

None. They were probably years old. 2 owners before me and slammed, they still sounded brand new but were stolen out of my jeep Cherokee.