Basically it's a Tech 21 Power Engine 60 with an EV12L. The downside is the EV doesn't fit very well, and making it fit voids the warranty on the amp.
Overall it's a small, compact rig that sounds UNBELIEVABLY great. Small enough for a jam session. Loud enough for a larger stage. The sound man gets a great sound direct from Kemper, so he's happy. I get great "real amp" tone & feel out of the PE60 so I'm happy. Best of both worlds IMO without having to spend a ton of money.
Cool. Sounds like an FRFR in a box solution. The Tech 21 is a straight up power amp with no coloration (some call it "tone"), right? Is the replacement speaker a Coaxial? I've often wondered how that would sound.
My Keyboard amp is very similar but has 2 - 12" speakers with seperate horns. Its design to be FRFR. Its close enough and has a bit of an "ampy" vibe to it.
bd