I'm looking to purchase an old Gibson Thor Tube Combo amp for small bar gigs. 50 Tube watts, big iron Trannies, and it comes with 2 Jensen 10" speakers (i'll sell). I'm looking to replace them with some more modern alternatives to get a little more low end and mids than the Jensens (guitar speakers). the sealed cab volume is about 1.56 cu ft, so it's be .755 cu ft per speaker. Eminence Beta 10a or Alpha 10a work in sealed, so I'm just wondering for the Speaker Guru people, other than their frequency response, will there be a difference with a 50 watt amp? like do i want the more xmax for sealed or more whatever? sorry not a big science numbers kinda guy so i'm not familiar with a lot of this. Yes i was planning on stuffing the cab with some fiberglass/mattress topper.