I just pulled out my 4 t3 tss 10s for two nightshade 15s. I liked the 10s but a 3000D kept tearing em up... tear spiders out at least once a week! the 15s are in a box that is not exactly right and i got a 1.5db gain at the headreast and i was already over a 150! still using the same amp at the same resting load and same charging system Jonathan is hard to get a hold of these days... Jacob calls me off my number on the caller id without leaving a message!! customer service at its best!!