I've got the following guitar cabinets: Orange 2x12 closed back with V30s - 16 ohm cab Avatar 2x12 closed back with V30s - 8 ohm cab Avatar 1x12 open back - used to have a v30 sold and installed an 8 ohm Celestion Gold. I'm trying to figure out what to do with the Avatar 2x12. Do I convert it to open back and put a couple more Gold's in there (wired in series or parallel??). Or do I keep one of the 16 ohm V30s and install a different speaker? Or maybe swap out for two Greenbacks? I'm at a loss as to what to do with this cab. Your thoughts are appreciated. Right now the amps I use the cabs for are: Orange TH30 head and VHT Special 6 Ultra Head. Down the road I'm thinking I'd like to get a Silverface head of some sort - maybe a used bassman or something along those lines.