Hi efficient speaker, bass problems

Boy T M please rewrite your post. Efficency and sensitivity are not the same but not different only opposite. Thus bass is not opposit only different ? ? ?

Viridian ... Your right , you are entitled to your wayward misconceptions .

I am not sure what you're asking. Your title says hi efficient but your post mentions low efficient speakers not having a grip on the bass.

My experience tells me that bass control is a function of the amp, and preamp to an extent. I use very hi-eff speakers and get very good control, definition, and impact from a mix of PP and SS amps.

As to your question, I will assume you meant that you don't hear bass control from hi-eff speakers. I posit that most of what you're hearing is probably due to the speakers being driven by SET or some other underpowered amp. Just a guess.