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.
Setup
Microphone measuring position: 43.5cm up from bottom of footers (near to top of top woofer) unless indicated otherwise
Grilles: none
Port plug: none
Mid- and high-frequency jumpers: Ref position unless indicated otherwise
Frequency response and sensitivity
Sensitivity: 89.04B (averaged 300Hz-3kHz on Listening Window, 2.83V/1m)
Chart A: 20Hz - 20kHz (measured @ 2m, plotted @ 1m)
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)
Top curve: 45 degrees off-axis response
Middle curve: 60 degrees off-axis response
Bottom curve: 75 degrees off-axis response
Chart C: 20Hz - 20kHz (measured @ 2m, plotted @ 1m)
Additional measurement to show effect of mid-frequency jumper positions
Top curve: Lo position
Middle curve: Ref position
Bottom curve: Hi position
Chart D: 20Hz - 20kHz (measured @ 2m, plotted @ 1m)
Additional measurement to show effect of mid-frequency jumper positions
Top curve: Lo position
Middle curve: Ref position
Bottom curve: Hi position
Chart E: 20Hz - 20kHz (measured @ 2m, plotted @ 1m)
Additional measurement to show SPL with microphone positioned at midpoint of woofers
Curve: on-axis response
Listening window
20Hz - 20kHz (measured @ 2m, plotted @ 1m)
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: @ 90dB, 50Hz - 10kHz (measured @ 2m)
Top curve: frequency response @ 90dB SPL
Bottom curve: THD+N @ 90dB (50Hz - 10kHz)
Chart B: @ 95dB, 50Hz - 10kHz (measured @ 2m)
Top curve: frequency response @ 95dB SPL
Bottom curve: THD+N @ 95dB (50Hz - 10kHz)
Deviation from linearity
Chart A: Difference @ 90dB from 70dB, 50Hz - 20kHz (measured @ 2m)
Chart B: Difference @ 95dB from 70dB, 50Hz - 20kHz (measured @ 2m)
Impedance magnitude variation
Vertical axis: impedance
Horizontal axis: frequency
Electrical phase
Vertical axis: phase
Horizontal axis: frequency