MEASUREMENTS

I used DRA Labs’ MLSSA system and a calibrated DPA 4006 microphone to measure the Forte III’s frequency response in the farfield and an Earthworks QTC-40 mike for the nearfield responses.

The Klipsch’s specified sensitivity is an extraordinary 99dB/2.83V/m; my estimate was lower, at 95.2dB(B)/2.83V/m, but this is still 8dB higher than the average sensitivity of the speakers I have measured over the past 30 years. This speaker will play loudly with a mere handful of watts. Klipsch specifies the Forte III’s nominal impedance as “8 ohms compatible.” I found that the speaker’s impedance magnitude (fig.1,