Because of the Klipsch La Scala’s bulk—it weighs 201lb—I measured the speaker in AH’s apartment. I used DRA Labs’ MLSSA system and a calibrated DPA 4006 microphone to measure the La Scala’s behavior in the farfield, and an Earthworks QTC-40 mike for the nearfield and in-room responses. The loudspeakers were driven by the Manley Mahi Mahi amplifiers AH used for his auditioning. For the measurements, I left off the grille that covers the high-frequency and midrange horns, as AH preferred the sound without them.
The La Scala’s sensitivity is specified as an extraordinarily high 105dB/2.83V/m, which is the same specification as the Klipschorn AK6 that the late Art Dudley reviewed in September 2019. As with the AK6, my B-weighted estimate was lower, at 101.3dB(B)/2.83V/m, but this is still the second-highest sensitivity of all the speakers I
