Pretty much anything sucks at bedroom volumes, at least if you are talking about amps and speakers designed to be played at gigging volume. I know my Peavey 6534+ and 4x V30 cab does. You end up cranking the presence, which only makes the fizz worse.
One issue you probably experience with V30s if they are never used at gigging volume is that they have never been properly broken in. I pussied around with my amp on 1 for months and the speakers always sounded like shite. Then I started (following a fellow guitarist's advice) playing with my amp on 3 whenever the neighbours either side were all out (maybe easier where I live) and then and only then did the speakers break in properly. They sound great now, but you still need to crank the presence if playing on low volumes.
My amp sounds brutal on 3 and above, okay on 2 with some presence cranked, and listenable on 1 with the presence and resonance right up. For good bedroom volume performance you really need a little practice amp like the Iommi 15W Laney. Even my Classic 30 sounds cr@ppy until you crank it to around 5.
Or maybe my ears are just shot??
