Another option is adding a subwoofer. I know that some here will not be receptive to this idea, but I've had more than a little success with my Maggie+subwoofer set-up (at least for my taste).
I used to own 3.5s and currently own the little MMG, which I sometimes use with 2 Rythmik subs and a Velodyne SMS-1 controller (which optimizes sub/main integration and room corrects the bass response from the subs). I also use an NHT active x-over to roll off the bass on the MMGs (the SMS is NOT in the main signal path). Overall I prefer the current SMG + subs to my old 3.5s and suspect that 3.6s with DRC subs might make a formidable combo.
Just one more option to consider.
Marty
I used to own 3.5s and currently own the little MMG, which I sometimes use with 2 Rythmik subs and a Velodyne SMS-1 controller (which optimizes sub/main integration and room corrects the bass response from the subs). I also use an NHT active x-over to roll off the bass on the MMGs (the SMS is NOT in the main signal path). Overall I prefer the current SMG + subs to my old 3.5s and suspect that 3.6s with DRC subs might make a formidable combo.
Just one more option to consider.
Marty