Re: Speaker change in a carvin 4x12?
I would suggest either eminence private jacks or weber 1225 ceramics with pre-rola treatment if greenbacks be your thing and I used to have a Carvin BelAir with those carvin speakers (they aren't a bad speaker by any means but you can definitely stand to improve)
I like the Legacy speakers from Weber but these seem to be a mixed bag for people, not sure if I got lucky (but just figured I'd be honest)
If money is no object than look into Scumbacks they are like the holy grail of greenbacks imho these and the webers are tied for best greenback speakers (the 1225 and the legacy are both greenback type speakers offered by weber).