They are damn loud as is, can’t imagine the 700 watt version...lol
Groove Tubes actually used to sell upgrade packages to bring the older MkII to current spec, and I sourced all the parts myself a bit cheaper, but the thing was, whatever speakers were in the version I had sounded good. Probably not all that full range or flat obviously, but the real Vibratone cabs only had a 10”, and they also had a high and low pass crossover network so only the midrange was going to the 10” with the rotating baffle, the highs and lows actually were sent back to the amps speaker. As such, I figured I didn’t really need things like an updated coaxial tweeter, since I actually really only wanted the midrange, and played around with crossovers in the Axe to mimic the Vibratone.
I’ve even run it without an IR and it sounds pretty good as is, so it does color the sound a bit, so probably not the ideal choice to run an older version for keyboard, or even as a main monitor for guitar, but, for just using it in a wet/dry type setup with guitar I’m so happy with it as is I don’t feel the need to change the drivers.
In a way I think their marketing missed the mark, as they try to promote it as this stand alone FRFR type product, and it’s not ideal for that IMO, bit where it’s unmatched is an an easily portable, compact, way to add essentially stereo wet to a dry rig, and that is where it really shines, and where I think guitar players would really see the real fun.
Play a far field IR though it and a close mic IR through a normal monitor speaker.... totally “amp in room” , sounds awesome with big reverbs, modulation with lots of stereo separation etc.
Huge potential, but always a bit under the radar.