My 2 cents:
Keep the impedance and phase angles reasonable. The last thing you want to do is make **any** amplifier work hard, as to do so makes more distortion and it will most likely be audible as harshness and loss of detail.
As an example, many speaker designers put dual woofers in parallel, creating a 4 ohm load in the bass. The problem is that most of the energy in music is in the woofers, so most of the distortion the amp is going to make is going to be the result of how hard it has to work to drive the woofers.
A simple way to make any speaker with any amp sound more transparent and smoother is to simply raise the impedance. You can see the implications of this in the specs of any amplifier, tube, solid state or class D.
A second beef is that many speaker companies equate sensitivity and efficiency as the same thing when they are a bit different. It would be better if both specs were stated.
Keep the impedance and phase angles reasonable. The last thing you want to do is make **any** amplifier work hard, as to do so makes more distortion and it will most likely be audible as harshness and loss of detail.
As an example, many speaker designers put dual woofers in parallel, creating a 4 ohm load in the bass. The problem is that most of the energy in music is in the woofers, so most of the distortion the amp is going to make is going to be the result of how hard it has to work to drive the woofers.
A simple way to make any speaker with any amp sound more transparent and smoother is to simply raise the impedance. You can see the implications of this in the specs of any amplifier, tube, solid state or class D.
A second beef is that many speaker companies equate sensitivity and efficiency as the same thing when they are a bit different. It would be better if both specs were stated.