I've got a 1x12 EVH III cab hooked up to my SV20H. (This combo is only what I play mainly, and is only 6 months old.) There are some great tones with the EVH G12H Celestion, but it's very heavy the low end. I'm into classic rock and blues, not into metal, so I felt like I wasn't getting the mids and higher end as much as I'd like for some of what I'm after. So I swapped it out for a Greenback G12M. Completely different sound, of course. I am getting the mids and higher to the point that it sounds a little thin. Part of me says to just live with it for a while, let it get broken in. Get used to it. Drive more bass through it... But another part of me says to get an empty 2x12 and use both speakers. . Always .