Back in '75 I had a GBX rig with a 4-12 (GBX) celestion cab. It was a guitar rig, but it handled outdoor hard rock gigs just fine. It was so long ago I can't objectively compare it to later rigs. I haven't seen any bassists mentioning using a 4-12; is there anyone out there using one and whaddya think/feel about it? Just curious.