@ditusa wrote:
In my opinion, a high powered amplifier that can drive lower impedances will never be a proxy for a speakers lack of true efficiency.
I fully agree, Mike.
@mrdecibel wrote:
The times I used tubes for mids / highs, and ss for bass, I always was aware of the " transition " between the two.
Even via my horn hybrid, actively configured main speakers using different SS amps for the top horn section (~600Hz on up) and bass bin it doesn’t go unnoticed that they "speak" slightly differently when compared to using two identical amps here, not least when the identical amps are bi-amped vertically. The difference is likely somewhat more subtle vs. the scenario of tubes + SS you’re describing, but it goes to show there are points in coherency to gain with extra attention invested here.
The SS amp chosen for the subs below ~85Hz is less critical wrt. ultimate coherency, but to my ears what is critical in this region is choosing an amp that doesn’t go totally bonkers with a damping factor in the thousands as a means in itself, but this is obviously also a matter of proper subs-amp-room matching and what sounds the most musically full and natural here, or whatever one finds appealing. Overly damped (i.e.: "tight") bass isn’t natural bass to my ears, nor is the inverse scenario - it’s certainly about finding the right balance in relation to one’s (p)reference and context.