Re: Guitar Amp, Bass Cab?
When I played primarily piggyback-type amps instead of combos, that was almost always what I did. I had four cabs in the main rotation, and all of them were designed for bass. One was an Ampeg B25B 2x15 cab, heavy as hell. The other was an Ampeg B42X 4x12 with dual tweeters. (Same size cab as the B25B, just different internals.) Then a bit later, there was a sale on Ampeg SVT Classic cabs, so I got a matched 1x15 and a 2x10, which I could play separately or together. I got those so it would be easier to haul the cabs around. The amps I played through those cabs were an Ampeg V4, an Ampeg Reverberocket R50 Head, or my Mesa F50 head.
I also had the proper 4x12 guitar cabs for the R50 and the V4, but I always thought the other ones sounded better.