High efficiency loudspeaker usually have greater dynamic range than less efficient speakers, due to something called ’thermal compression’, which is heating of the voice coil. As the coil heats up, its resistance goes up too. This is far more common with lower efficiency loudspeakers! Most solid state amps will thus put out less power. This can happen with individual bass notes, causing them to compress.
Its often more difficult to find higher power amplifiers that actually sound like music, although that problem is not as big now as it was 20 years ago.
I use all pro amplifiers crown xls, xti and a Cerwin Vega el-36dp along with a cvx 21-s all of those are professional level which they also put out a lot of power and sound very musical and I mean it they sing also the Cerwin Vegas makes my system sound like a movie theater, club and small concert. My goal is to have a huge concert going on in my head and around me when I’m by myself