Iused DRA Labs’ MLSSA system with a calibrated DPA 4006 microphone to measure the KLH Model Three’s frequency response in the farfield and an Earthworks QTC40 mike for the nearfield response of the woofer, both microphones used with an Earthworks preamplifier. I measured a different sample than those auditioned by Robert Schryer; its serial number was 20220401101.
The Model Three’s excellent manual includes a lot of useful advice on optimizing the balance of the speaker. A diagram indicates that with the Model Three sitting on its stand, the listener’s ears should be within a 20° vertical angle centered on the tweeter. I set the
