Loudspeaker design nearly always involves trade-offs regarding sensitivity, size, bass extension and dynamics. If you don't think a loudspeaker the size of a large refrigerator is too big, then you can have all four. Lo wattage and high wattage systems have their pluses and minuses and either approach can deliver excellent sonics.
Why do speakers improve with more powerful amps?
So, if I have a solid state amp that more than adequately powers a speaker, why do people recommend a larger more powerful amplifier to improve things?
Why do more powerful amplifiers impact speaker sound quality in a favorable way? Is it because more power is reaching the speakers? Mid and Tweeter drivers I was told receive a reduced signal versus bass drivers which receive relatively more power via crossovers. All for the purpose of balancing a signal going to the various drivers.