I'll definitely reply back with what I do - I was looking at an older Audison LR6 which is basically a fancy pants JL XD600 as it has 4 discrete channels for the 'mains' and 2 more for the 'subs'. And its not compact at all. The compact one is the Primo 8.9 and it has DSP built in (no need for the additional bit 10), but is more expensive than the JL and LR6 and isn't nearly as powerful. (we're talking all less than $500 here).
Plan C is to get 2 hertz amps - a 4 channel and 2 channel - as that splits the difference. Cheaper than the JL and Primo, but more than the LR6. However they are tiny and can be hidden just cost more to install and configure.
this guy has me thinking expensive thoughts:
and this - woah:
https://f80.bimmerpost.com/forums/sh...php?p=17888680
Seth