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Loudspeakers: Measurements如何测试喇叭... [复制链接]

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leslie
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leslie

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  • 2003-01-24
11#
t T
发表于 2011-04-25 11:03 |只看楼主

Dynaudio Confidence C4 Loudspeakers: Measurements

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: between tweeters

Sensitivity: 88.0dB (averaged 300Hz-3kHz, 2.83V/1m)

Frequency response, 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

Frequency response, 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 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)

Additional Measurement
THD+N @ 95dB, 50Hz - 10kHz (measured @ 2m)

Top curve: frequency response @ 95dB SPL
Bottom curve: THD+N @ 95dB (50Hz - 10kHz)

Chart 4 - Impedance Magnitude Variation and Electrical Phase

Impedance curve

Vertical axis: impedance
Horizontal axis: frequency

Electrical phase

Vertical axis: phase
Horizontal axis: frequency
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leslie
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leslie

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  • 19720110
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12#
t T
发表于 2011-04-25 11:04 |只看楼主

Dynaudio Excite X12 Loudspeakers: Measurements

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: tweeter axis

Grille: off

Sensitivity: 82.5dB (averaged 300Hz-3kHz, 2.83V/1m)

Frequency response, 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

Frequency response, 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 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 - Deviation from Linearity at 90dB and Above

Difference @ 90dB, 50Hz - 20kHz (measured @ 2m)

Curve: difference from 70dB at 90dB

Chart 5 - Impedance Magnitude Variation and Electrical Phase

Impedance curve

Vertical axis: impedance
Horizontal axis: frequency

Electrical phase

Vertical axis: phase
Horizontal axis: frequency
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leslie
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leslie

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  • 19720110
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13#
t T
发表于 2011-04-25 11:05 |只看楼主

Dynaudio Focus 110 Loudspeakers: Measurements

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: between tweeter and woofer

Grille: off

Sensitivity: 85.0dB (averaged 300Hz-3kHz, 2.83V/1m)

Frequency response, 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

Frequency response, 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 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)

Additional Measurement
THD+N @ 95dB, 50Hz - 10kHz (measured @ 2m)

Top curve: frequency response @ 95dB SPL
Bottom curve: THD+N @ 95dB (50Hz - 10kHz)

Chart 4 - Deviation from Linearity at 90dB and Above

Difference @ 90dB, 50Hz - 20kHz (measured @ 2m)

Curve: difference from 70dB at 90dB

Difference @ 95dB, 50Hz - 20kHz (measured @ 2m)

Curve: difference from 70dB at 95dB

Chart 5 - Impedance Magnitude Variation and Electrical Phase

Impedance curve

Vertical axis: impedance
Horizontal axis: frequency

Electrical phase

Vertical axis: phase
Horizontal axis: frequency
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leslie
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leslie

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14#
t T
发表于 2011-04-25 11:07 |只看楼主

ocus Audio Prestige FP50

Frequency response and sensitivitySensitivity: 82.5dB (averaged 300Hz-3kHz, 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
Listening window20Hz - 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@ 90dB, 50Hz - 10kHz (measured @ 2m)

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

Deviation from linearity at 90dB and aboveDifference @ 90dB from 70dB, 50Hz - 20kHz (measured @ 2m)

Impedance magnitude variation
Vertical axis: impedance
Horizontal axis: frequency
Electrical phase
Vertical axis: phase
Horizontal axis: frequency








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leslie
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leslie

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15#
t T
发表于 2011-04-25 11:07 |只看楼主

Focus Audio Signature FS-688 Loudspeakers: Measurements

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: tweeter, no grille

Sensitivity: 83.0dB (averaged 300Hz-3kHz, 2.83V/1m)

Frequency response, 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

Frequency response, 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 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)

Additional Measurement
THD+N @ 95dB, 50Hz - 10kHz (measured @ 2m)

Top curve: frequency response @ 95dB SPL
Bottom curve: THD+N @ 95dB (50Hz - 10kHz)

Chart 4 - Impedance Magnitude Variation and Electrical Phase

Impedance curve

Vertical axis: impedance
Horizontal axis: frequency

Electrical phase

Vertical axis: phase
Horizontal axis: frequency
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leslie
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leslie

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  • 19720110
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  • 2003-01-24
16#
t T
发表于 2011-04-25 11:08 |只看楼主

Focus Audio Signature FS68SE Loudspeakers:

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: between tweeter and woofer

Grille: off

Sensitivity: 83.0dB (averaged 300Hz-3kHz, 2.83V/1m)

Frequency response, 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

Frequency response, 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 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 and Electrical Phase

Impedance curve

Vertical axis: impedance
Horizontal axis: frequency

Electrical phase

Vertical axis: phase
Horizontal axis: frequency
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达声
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达声

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17#
t T
发表于 2011-04-25 11:08 |只看该用户

Leslie兄好貼。
達聲音響極品黑膠唱盤專門店网址:http://www.tatsangaudio.com.cn
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leslie
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leslie

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  • 19720110
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  • 28495
  • 2003-01-24
18#
t T
发表于 2011-04-25 11:08 |只看楼主

Focus Audio Signature FS-788 Loudspeakers: Measurements

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: Tweeter axis

Grille: off

Sensitivity: 84.5dB (averaged 300Hz-3kHz, 2.83V/1m)

Frequency response, 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

Frequency response, 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 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)

Additional Measurement
THD+N @ 95dB, 50Hz - 10kHz (measured @ 2m)

Top curve: frequency response @ 95dB SPL
Bottom curve: THD+N @ 95dB (50Hz - 10kHz)

Chart 4 - Impedance Magnitude Variation and Electrical Phase

Impedance curve

Vertical axis: impedance
Horizontal axis: frequency

Electrical phase

Vertical axis: phase
Horizontal axis: frequency
TOP
leslie
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leslie

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  • 19720110
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  • 28495
  • 2003-01-24
19#
t T
发表于 2011-04-25 11:09 |只看楼主

Focus Audio Signature FS-888 Loudspeakers:

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: between tweeter and top woofer

Grille: off

Sensitivity: 88.5dB (averaged 300Hz-3kHz, 2.83V/1m)

Frequency response, 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

Frequency response, 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 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)

Additional Measurement
THD+N @ 95dB, 50Hz - 10kHz (measured @ 2m)

Top curve: frequency response @ 95dB SPL
Bottom curve: THD+N @ 95dB (50Hz - 10kHz)

Chart 4 - Impedance Magnitude Variation and Electrical Phase

Impedance curve

Vertical axis: impedance
Horizontal axis: frequency

Electrical phase

Vertical axis: phase
Horizontal axis: frequency
TOP
leslie
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leslie

  • 论坛博士后
  • 19720110
  • 27155
  • 28495
  • 2003-01-24
20#
t T
发表于 2011-04-25 11:09 |只看楼主

Focus Audio Signature FS8 Loudspeakers: Measurements

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: tweeter axis

Grille: off

Sensitivity: 88.5dB (averaged 300Hz-3kHz, 2.83V/1m)

Frequency response, 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

Frequency response, 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 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)

THD+N @ 95dB, 50Hz - 10kHz (measured @ 2m)

Top curve: frequency response @ 95dB SPL
Bottom curve: THD+N @ 95dB (50Hz - 10kHz)

Chart 4 - Deviation from Linearity at 90dB and Above

Difference @ 90dB, 50Hz - 20kHz (measured @ 2m)

Curve: difference from 70dB at 90dB


Curve: difference from 70dB at 95dB

Chart 5 - Impedance Magnitude Variation and Electrical Phase

Impedance curve

Vertical axis: impedance
Horizontal axis: frequency

Electrical phase

Vertical axis: phase
Horizontal axis: frequency
TOP
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