Amplifier to speaker power is a lot more complicated than rated power output vs listening dB. The trick is amplifying the entire audio band. Even a low power consumer receiver will crank out 90 plus db but if you place a spectrum analyzer you will find the lower end of the Thiel's frequency band to be way lower than the spec'd +/-3dB.
Put a Krell or a Levinson monster on a Thiel and match the output and you will immediately hear a profound difference at the same listening dB as the lower frequencies are brought to life.
Put a Krell or a Levinson monster on a Thiel and match the output and you will immediately hear a profound difference at the same listening dB as the lower frequencies are brought to life.