So in the very near future, I will upgrading to 2 CT-Sounds 2500.1's (3900w @ 1 @ 14.4v). The pair will be strapped at 1 (.5 each) so I should realistically be seeing... 10k rms or so. I went on the XS site and used the calculator.... but it seems a bit off. I will have a yellow-top up front (Which I might upgrade to a d3400 as well) and a 240a alt.... The calculator only says to use (2) D3100s... Doesn't that seem a bit low? i was thinking I'd need 3 or 4.... Or was thinking 6 XP950s... Any insight on if it's correct/If it's enough, and benefit of going with a d3100 over a few xp950's or vice-versa?