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.
Notes: Because of the low price and limited output capability 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 and/or crossover components with high voltage. Since the measurements were performed and plotted at a 2-meter distance, this is equivalent to 91dB at 1 meter, which is still quite loud. In addition, we performed an extra measurement to show the on-axis performance without the supplied grille in place.
Setup
Microphone measuring position: tweeter axis
Grille: none
Frequency response and sensitivity
Sensitivity: 82.0dB (averaged 300Hz-3kHz on Listening Window, 2.83V/1m)
Chart A: 20Hz - 20kHz (measured @ 2m, plotted @ 1m)
Horiztonal response from 0 to 75 degrees off-axis
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: @ 85dB, 50Hz - 10kHz (measured @ 2m)
Top curve: frequency response @ 90dB SPL
Bottom curve: THD+N @ 90dB (50Hz - 10kHz)
Deviation from linearity
Chart A: Difference @ 85dB from 70dB, 50Hz - 20kHz (measured @ 2m)
Impedance magnitude variation
Vertical axis: impedance
Horizontal axis: frequency
Electrical phase
Vertical axis: phase
Horizontal axis: frequency