@Ronzo, thanks for the further info. I too noticed there's no Fender dust cover for the R40 -- annoying.
Besides the better clarity you heard from the 40, did you notice much difference on your lowest notes? Did they sound as full through the 10 as through the 12? Would speaker efficiency influence this, or do the added diameter of the 12 and the larger enclosure = fuller lows?
Besides the better clarity you heard from the 40, did you notice much difference on your lowest notes? Did they sound as full through the 10 as through the 12? Would speaker efficiency influence this, or do the added diameter of the 12 and the larger enclosure = fuller lows?