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楼主:leslie

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

leslie
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leslie

  • 论坛博士后
  • 19720110
  • 27155
  • 28495
  • 2003-01-24
61#
t T
发表于 2011-04-25 11:49 |只看楼主

Wilson Audio Specialties Sophia Series 2 Loudspeaker

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: tweeter axis

Grille: off

Sensitivity: 87.0dB (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

  • 论坛博士后
  • 19720110
  • 27155
  • 28495
  • 2003-01-24
62#
t T
发表于 2011-04-25 11:50 |只看楼主

Wilson Audio WATT/Puppy 6 Loudspeakers

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: 91.5dB

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

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 With Frequency

Impedance curve

Vertical axis: impedance
Horizontal axis: frequency
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leslie
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leslie

  • 论坛博士后
  • 19720110
  • 27155
  • 28495
  • 2003-01-24
63#
t T
发表于 2011-04-25 11:50 |只看楼主

Wilson Audio WATT/Puppy 7 Loudspeakers

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: 42" up from speaker base (manufacturer specified)

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: 92.5dB

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

  • 论坛博士后
  • 19720110
  • 27155
  • 28495
  • 2003-01-24
64#
t T
发表于 2011-04-25 11:51 |只看楼主

Wilson Audio Specialties WATT/Puppy 8

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: tweeter axis

Grille: off

Sensitivity: 91.0dB (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

  • 论坛博士后
  • 19720110
  • 27155
  • 28495
  • 2003-01-24
65#
t T
发表于 2011-04-25 11:51 |只看楼主

YG Acoustics Anat Reference Main Module

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: tweeter axis

Grille: off

Sensitivity: 89.0dB (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
TOP
leslie
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leslie

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  • 19720110
  • 27155
  • 28495
  • 2003-01-24
66#
t T
发表于 2011-04-25 11:52 |只看楼主

Zu Cable Druid Loudspeakers

Chart 1 - Frequency Response and Sensitivity

Microphone measuring position: center of tweeter

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: 97.0dB

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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胡思
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胡思

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  • 2004-04-16
67#
t T
发表于 2011-04-25 13:42 |只看该用户

先收藏，慢慢看。
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atcxzc
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atcxzc

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  • 2003-09-16
68#
t T
发表于 2011-04-26 02:55 |只看该用户

妈呀。。太长了。。谁能看完。。
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leslie
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leslie

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  • 19720110
  • 27155
  • 28495
  • 2003-01-24
69#
t T
发表于 2011-04-26 09:08 |只看楼主

原帖由 atcxzc 于 2011-4-26 2:55:00 发表
妈呀。。太长了。。谁能看完。。


发都发完了。。。。。。
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jiahao_f
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jiahao_f

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  • 2006-11-14
70#
t T
发表于 2011-04-26 15:35 |只看该用户

从文字到技术，专业到毫无意义的贴。
试问有几多人会看懂？
符合国情，接近现实多一点，拜托！！
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leslie
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leslie

  • 论坛博士后
  • 19720110
  • 27155
  • 28495
  • 2003-01-24
71#
t T
发表于 2011-04-26 15:47 |只看楼主

原帖由 jiahao_f 于 2011-4-26 15:35:00 发表
从文字到技术，专业到毫无意义的贴。
试问有几多人会看懂？
符合国情，接近现实多一点，拜托！！


任何事物的存在都是有意义的，比如阁下。
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