Well, I really love my D120F but it was about to break the baffle board in BOTH of my Fender 1x12'' combo amps. I have a few Jensen Neo 12-100 speakers that I like, but always felt they lack the brilliance that brings out the chime in Fender amps, something I need! So on a whim I decided to see if an aluminum dust cap could bring this out and it sounds GREAT! Brighter [but still not harsh] and a noticable upper presence boost, much closer to JBL tone to my ears. Sorry, no sound clips [I'll post a couple pics] but I thought I would share as it is a noticable improvement on the rather flat Neo 12-100 tone. I used a 2 1/2'' cap as opposed to the JBL 4''.