Nola Baby Grand Reference I

If there are indeed no connection designation markings or indicators on either the external crossovers or the speakers then you should definitely call Carl @ 631-738-2540.

I have bi-amped my Alon 1's and Alon Lotus SE mk ll speakers with tubes on the mid/tweets and SS on the woofers with relatively good success. Assuming you will be using the internal passive crossovers on the Baby Grand's, you will need the ability to adjust the gain on each amp and for optimum results you will also need to have the ability to adjust the feedback on the tube amps.

While the results of bi-amping provided some additional headroom and very good musical qualities, I ultimately went back to using stereo tube amps as that provided the most coherent/musical match.

It is at least worth exploring though if you have all the
equipment/cabling on hand.