Does anyone have experience with the audible differences of JBL D-140Fs in the 1968+ Fender Dual Showman and Super Bassman cabinets at 45" x 30" x 11.5" and the earlier (1963 - 67) ones at 36" x 24.5" x 11.5"? That's a 2.5 cu ft difference and I would like to think that there's a big difference but it may not be a good one. Thanks.
Bob Walker