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Equipment Measurements

September 2000

Verity Audio Fidelio Loudspeakers: Measurements

PLEASE NOTE: This loudspeaker has a rear-firing woofer. As a result, the anechoic measurement will be substantially rolled off in the bass region due to the absence of rear-wall reflections. In a listening room, the Fidelio's bass would reflect off the rear wall and be reinforced. Therefore, to give a better indication of the speaker's actual response, we have included an extra frequency-response measurement that is a "splice" of two measurements. The first one used is an on-axis response measured to the front of the cabinet. The second is an on-axis response measured to the rear of the cabinet. Using these two measurements and specialized computer software, the graph was spliced together at 100Hz to form a complete frequency-response graph.

All  loudspeaker measurements are performed independently at the National Research Council of Canada. Please click to learn more about how we test loudspeakers there. All measurement data, including graphical information displayed below, is the property of SoundStage! Reproduction in any format is not permitted.

Chart 1 - Frequency Response and Sensitivity

Frequency response, 20Hz - 20kHz (measured @ 2m, plotted @ 1m)
Loudspeaker sensitivity (averaged 300Hz - 3kHz, 2.83V/1m)

Top curve: on-axis response
Middle curve: 15 degrees off-axis response
Bottom curve: 30 degrees off-axis response
Sensitivity: 85.5dB

Frequency response, 20Hz - 20kHz (measured @ 2m, plotted @ 1m)
Loudspeaker sensitivity (averaged 300Hz - 3kHz, 2.83V/1m)

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

Additional Measurement ("spliced" responsed curves)
Frequency response, 20Hz - 20kHz (measured @ 2m, plotted @ 1m)

Curve: on-axis response

Chart 2 - Listening Window

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

Chart 3 - Total Harmonic Distortion + Noise

THD+N @ 90dB, 50Hz - 10kHz (measured @ 2m)

Top curve: frequency response @ 90dB SPL
Bottom curve: THD+N @ 90dB (50Hz - 10kHz)

Chart 4 - Impedance Magnitude Variation With Frequency

Impedance curve

Vertical axis: impedance
Horizontal axis: frequency

 

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