All loudspeaker measurements are performed independently at the National Research Council of Canada. All measurement data and graphical information displayed below are the property of the SoundStage! Network and Schneider Publishing Inc. Reproduction in any format is not permitted.

Note: Because of the low sensitivity of this loudspeaker, the THD+N and linearity measurements were performed at a sound-pressure level of 85dB instead of the usual 90dB to avoid damaging the drive units with high voltage.

Setup

Microphone measuring position: tweeter axis
Grille: off (none supplied)

Frequency response and sensitivity

Sensitivity: 81.0dB (averaged 300Hz-3kHz on Listening Window, 2.83V/1m)

Chart A: 20Hz - 20kHz (measured @ 2m, plotted @ 1m)

fr_on1530

Top curve: on-axis response
Middle curve: 15 degrees off-axis response
Bottom curve: 30 degrees off-axis response

Chart B: 20Hz - 20kHz (measured @ 2m, plotted @ 1m)

fr_456075

Top curve: 45 degrees off-axis response
Middle curve: 60 degrees off-axis response
Bottom curve: 75 degrees off-axis response

Listening window

20Hz - 20kHz (measured @ 2m, plotted @ 1m)

fr_listeningwindow

Response curve is an average of five measurements: on-axis, 15 degrees left and right off-axis, 15 degrees up and down off-axis

Total Harmonic Distortion + Noise

Chart A: @ 85dB, 50Hz - 10kHz (measured @ 2m)

thd_90db

Top curve: frequency response @ 85dB SPL
Bottom curve: THD+N @ 85dB (50Hz - 10kHz)

Deviation from linearity

Chart A: Difference @ 85dB from 70dB, 50Hz - 20kHz (measured @ 2m)

dev_90db

Impedance magnitude variation

Impedance

Vertical axis: impedance
Horizontal axis: frequency

Electrical phase

electrical_phase

Vertical axis: phase
Horizontal axis: frequency