Hi to all and I am really hoping for some answers and for the opinions of all of you out there in the world of Bass... First off, what I'm currently playing: I am currently playing a 5 string Warwick Thumb bolt on through an Ampeg SVT 2 Pro (newest addition to my set up) that is pushing it's sound out through an Avatar 410 Neo (4ohm). I play in an original heavy rock band that has strong influences in the progressive rock genre. We write in drop D and I'm playing with one other guitarist and a very competent drummer that plays loud. For a reference point, think Tool in that our songs have both lighter, melodic points where I play on the higher A, D and G strings with effects and then heavy chorus parts where it's on the dropped D in the lower frets. Now, my problem...I can get awesome tone out of this Amp (especially when playing at lower volumes with just the guitarist when we write), however when jamming with the whole band, I find that as I turn up the volume to match that of the drums and guitar, I'm finding that the awesome tone slowly fades and muddys up (particularly on the dropped D string), the tubes start clipping and my volume seems to just drop off as I move over to where the drummer is (who can hardly hear me at all). There doesn't seem to be any lasting presence of the bass, the nice warm depth that sits below everything else and doesn't necessarily compete with everything by being louder but resonates well within the room. I previously had an ashdown ABM 500 evo III and seemed to be experiencing similar issues, which is leading me onto believe that it is a cabinet related issue. What I'm looking to find out is what is the issue here? Am I trying to push too much volume out of one cab (as in, what about an 810 or another 410)? Is there an issue with my amp? Is the 300Watts of Tube power just not enough? Is solid state a better way to go for what I'm trying to achieve here? I have spent a lot of money recently in upgrading my amp and I don't mind spending the money on good gear (I've never been a tightass when it comes to my bass gear as I enjoy it so much) but not if I keep running into the same issues or if it is this cabinet in particular that's too responsive to the low end. I just don't want to go through 5 amps running into the same issues. My guitarist by the way, is playing through an older Ampeg 100watt all tube head that is driving an 8 ohm 412 cabinet. His sound is perfect, it travels well across the whole room and the drummer and I both hear him clearly, no matter where I stand. And it isn't that he's playing at overbearingly loud volumes, he just seems to have that awesome presence within the whole room. Any thoughts, direction, ideas, experience or even questions for more info are welcomed and much appreciated.