So I did what I've been wanting to do for awhile now, I got rid of my amp and moved on to a pre/power setup. I have a BBE Bmax-T and a Mackie 1400i on the way to me from fellow TB'er pgurns, and while I know how to set everything up, how far should I turn up the gains on the power amp? (I'll be mono-bridging it into an Ampeg SVT 410 HLF) Is it possible to get a growly tone out of the Bmax-T? Is it ok not to have a space between the power amp and preamp in my rack case, or should I upgrade to a bigger one? Please help!