Bump - I'm interested in this question. I'm assuming the OP means clean headroom, but I'm also interested in overall volume.
I did play a 68 Custom Princeton recently and was really impressed. I always found the PRRIs too bright, but the 69 Custom was lovely - very warm sounding.
I had a pro jr with a Ragin Cajon in it. great amp. Headroom wise is was enough (with a ep booster or distillery on, for more db) so it was close. How is the Princeton 68 headroom wise compared to the pro jr? looks like a nice amp. Love Jim camplingo tones
Did you end up leaving it jumpered? I noticed your mention that the amp sounded thinner with the jumper. Was there a solution to that too?I've got a 65 prri and 68 CPR and like them both. I have a Rajun Cajun in the 65 and WGS G10C in the 68. I did mod a 68 to reduce the bass and posted it hear on TGP (see link below). One of the mods Fender did to the 68 was raise the bass floor, it's simple to mod if your ok with a soldering iron and careful not to touch high voltages.
68 CPR Bass mod https://www.thegearpage.net/board/i...om-princeton-reverb-to-much-bass-mod.1739491/
I currently have the jumper in place. With the WGS speaker installed I am happy, for now at least .Did you end up leaving it jumpered? I noticed your mention that the amp sounded thinner with the jumper. Was there a solution to that too?