I feel I have to be in a club here..........So I swapped my Bag End stack for a pair of AG GS112s and the guy convinced me (as did discussion here) to get a Delta II 2512 Neo driver. I did and swapped it. So I bought a pv alphabass. It has plenty of mids so I went back to the original driver. I think it sounds more organic and natural. It sounds more like a pair of 15s.