The 210 is significantly older than the 800 combo, which is the only Rumble with neo drivers.I'm with JakobT, the 210 Rumble extension cabinet would be the best mate for that, but it's a head-scratcher:
WHY doesn't the extension Rumble 210 run the same drivers as the 800? Aggravating.
There is only 50W difference at 8ohm between the 500c (350W) & the 800c (400W) - the bigger difference in perceived SPL would probably be that the Neo drivers are slightly brighter sounding.The 210 is significantly older than the 800 combo, which is the only Rumble with neo drivers.
My guess is that Fender has decided that most will be using the 800 on its own, and that the market for a neo extension cab solely for the 800 isn’t large enough. What there is of it can probably be filled comfortably by the standard 210 anyway.
Based on my own experience, I rarely have to break out the extension cabinet for my 500, and presumably the need for an extension cab would be even smaller with the 800.
I heard a decent recording of the Orange OBC-112, I would no longer recommend that cab.I think a black Orange OBC-112 (or two) would work great - 26 lbs, 400W rating, the right size, and $550 brand new.