Should have been more clear. The iNuke 3000 is 50 dollars less than the iNuke 3000 DSP model. So the DSP in the amp adds 50 to the cost, whereas the miniDSP costs 125 not including the cost of the additional cables and plug in.
Why 2 iNukes?
True, but if I dont get the miniDSP then I need to double my LFE outputs since I would be going straight to the iNuke.No to the adapter to split your single LFE output; it is not necessary. The single LFE output from the AVR is fed to a single miniDSP input. That single input is then duplicated internally using the miniDSP plug-in to two mono outputs. Those two mono outputs are then manipulated/EQ'd the using the plug-in. Those two miniDSP outputs then serve as the inputs for the amp's L & R channels to drive each sub individually.
Depends on what manufacture you go with. There is YPAO (Yamaha), MCACC (Pioneer), Audyssey (Denon, Marantz, Onkyo, Integra), ARC (Anthem), Sherwood (Trinnov), and Harman Kardon has their own as well that I forget. Depending on the EQ you may or may not get individual or summed response.FYI: Most AVRs do not have two unique LFE (.2) outputs. Higher-end AVRs sometimes do, but they likely already have Audyssey SubEQ functionality (independent EQ of two subs), so there is less to be gained by using a miniDSP in the first place.
Next year I have the go ahead to consolidating my AVR & Amps to a Pioneer SC model, and they use MCACC which doesnt EQ below 63 hz (as of now, rumor is this years model will). And MANY Audyssey XT models are still lacking SubEQ IIRC.