It's two parallel monitors per channel in a Toole-specified ambiance array, each monitor 8 Ohms nominal/5.3 Ohms minimum. Toole's ambiance array increases "sound intensity", which subjectively increases sensitivity above a normal monopole speaker with the same sensitivity spec. You could also describe increased sound intensity as a larger stage size and increased stage density.
Six monitors employed (two monitors per channel) with Bongiorno's pure analog Trinaural processor, which further increases stage/image qualities and has 50% greater acoustic output vs. the stereo format. Four distributed subs ala Geddes acoustically flatten modes (1kW amp, also LeJeune's Room Gain Complementary tuning) for ten speakers total.
I'd employ 3x 100 mono blocks.
Do the line-level filters minimize the current demands on the amp at the minimum load impedance?
