My understanding of Linn's "Active" concept (and I could be wrong, so those of you with Linn speak up!) is that essentially the amplifiers are bandwidth-restricted, thereby replacing the crossovers in the speaker cabinet by supplying each driver in the enclosure with a direct signal from an amplifier custom designed to that driver's frequency response in the design. I've heard this in a friend's system, and it certainly was much better sounding than passive bi-amping. But since the amplifiers' frequency response is specifically matched to the speaker design and the drivers used, unless you get another brand of speaker with the same drivers or drivers tailored for that specific frequency response (highly unlikely, I'd imagine), I think you'd be disappointed in the results. It might be possible to tailor the amplifiers' frequency response for another speaker, but that sounds like a lot of work and something I think Linn would not like to do.
