As per my post above, I think the correct term is Bi-Amping the speakers. I believe the Model T's have 3 sets of labeled binding posts which are the external connections to the passive crossover These binding posts, are bridged together by external metal clips. These clips can be removed, effectively isolating the the binding posts and you can use separate amp for your woofers, mids and highs. If you just remove the clip to isolate the woofers , each Model T speaker would require two amplifier channels , one for the lows, or woofers and one for the mids/highs. Of course each 3B not in mono mode has two channels (left and right) . We are changing the speaker configuration around AND configuring the amps back into 2 channel mode. The amp should be "happier" because the current draw should not be as high, but for sure you a bigger amp for high volume playback should be your end goal. Maybe James could chime in regards to the impedance of the woofer network.
Mag, I don't know your technical background, and if you are not sure about the above configuration I would not suggest you attempt it. You have a really expensive rig and there are a couple things that
could really wrong if you mis -configure the above . If you have any doubts, discuss the above configuration as a possible option with your dealer before attempting. I would hate to see anything go boom. That is very very nice rig you have and we all want to keep it that way.