Nola Baby Grand Reference I

I think that what Carl is saying is that the bass and the mid/treble drivers won't blend and sound as one unit. Every speaker designer who designs a multi-driver speaker system wants his or her speaker to sound as one voice across all the drivers when you listen, rather than hearing each driver separately. I think that Czarivey is essentially saying the same thing, and if you really want solid state bass his advice is good. I'd tend to say go with a top-tier tubed amp that can handle bass well (VAC or VTL, for example) along with the tubed preamp, as Nola voices their speakers using tubed amplifiers, but that's just my taste.

Thanks for your responses.
My problem was that I could not identify the terminals on the Baby Grand crossovers. Carl straighten that out for me and now I have the Baby Grand bi-amped. I am trying different amps to see what sound best to me.

Thanks again.

Problem solved!!!!!

i know that Carl has nothing against bi-amping per se, but i believe it's better done the way you are suggesting (different power amps for different frequencies) with electronic crossovers and separate subs.
or alternatively do what was suggested earlier and use two of the same power amp, rather than mixing valve and solid state power amps, even if driven by a valve amp.
if you are set on using both valve and solid state power amps i suggest you try VAC's phi300 as it has a gain control, which will allow you to compensate for differing amounts of gain
but my instinct is you will be better off using matching power amps

Carl is pretty emphatic that his speakers sound best with the ARC Ref75 using KT150 tubes. Of course that's no reason not to experiment but it should be kept in mind (especially given the relatively modest price of that amp).