There are many different factors that can make a speaker sound “faster,” but in my opinion, the biggest factor is the class bias of the amp. I’ve made this analogy before. A class B bias amp is like a dragster sitting on the starting line with the engine at idle. When they get the green light, they floor the throttle and are off toward the finish line. A class A bias amp is a like a top fuel dragster. The throttle is wide open and they pop the clutch getting off the line SOOO much quicker. Class A bias amps are always wide open, just waiting to reproduce the musical note, hence a faster response time.
