Everything Atmasphere said...and
The fact that the speaker interacts with the acoustic space does not make it any more important than the components driving the speakers. Your car's tires directly interact with the road, but you wouldn't say your choice of tires is more important than the engine or the suspension.
03-16-07: Bob_reynolds
It's not a myth, it's logic. Electronics do not directly interact with the acoustic space. Speakers do. Until speaker distortion is relatively close to that of electronics, the speaker is where our concern should be placed.
The fact that the speaker interacts with the acoustic space does not make it any more important than the components driving the speakers. Your car's tires directly interact with the road, but you wouldn't say your choice of tires is more important than the engine or the suspension.