MEASUREMENTS

ecause of the JBL 4367’s size and weight, I drove my gear—DRA Labs’ MLSSA system, an Earthworks microphone preamplifier, calibrated DPA 4006 and Earthworks QTC-40 microphones, and Dayton Audio’s DATS V2 system—to AH’s apartment for the measurements. While we were able to lift one of the speakers onto a short stack of 2 × 4s sitting on top of a dolly for the testing, the woofer was still relatively close to the floor. Reflections from the floor will therefore reduce the midrange resolution of the farfield response measurements. During these measurements, the speakers were driven by an Ayre Acoustics AX-5 Twenty amplifier. All measurements were made with the HF control in its center, neutral