@kraftwerkturbo This is a common path, to use a strong class D amp to power woofers with something lower powered for the highs. The only challenge you will come across is gain matching, as a more powerful amp may also have stronger output gain (not always the case). Generally you can get around this if one of the amplifiers have a gain control so you can level match. Another option you could pursue is using DSP, like MiniDSP or other solution that can implement room correction for bass issues in addition to level matching. Happy to discuss this more in depth if you need more information!
B&W Nautilus 804 - bi amping
I am considering buying used 804 (one new mid driver, woofers redone professionally). I read that the 804 impedance dips very low and/or that they need an amp that can deliver plenty of current, otherwise they don't 'wake up'.
Has someone tried to bi amp using 2 DIFFERENT amplifiers? Thinking a BRUTE (maybe a class D) for the woofers, and something 'nice' for the mid/highs (maybe class A or even tube)?
In general, what problems could be caused by using different amps for bi amping?