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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: You're still not exactly comparing apples to apples posted by Guth on November 11, 2006 at 09:26:56:
Measuring the same speaker, without moving it or the measurement microphone, or anything else in tha acoustic field, over a long period of time is virtualy impossible to do. Anyone who regularly takes emasurements of speakers will know what I am talking about, and understand that the slightest change in the placement of the mic relative to the speaker, or of any of the surrounding environment, will change the measured results.This is because the microphone has no inherent processing capability, no binaral hearing to sort things out, no way to correlate what is occuring acoustically as a holostic event, while our ears do.
Measuring a speaker in a typical room would also be that much more impossible, the room reflections will change with the slightest change in the mic position.
I know what you are asking, how can one possibly listen to a different speaker and draw any conclusions? Well, I have access to matched sets of speakers, from the same production run, using the same batch of materials to assemble them, and can measure them to be similar to within a fraction of a dB. While there may be very slight differences in FR left due to unit to unit variation, the tonal changes noticed are well beyond these slight FR variations, which sound very similar when green, and quite diferent when broken-in.
There are also other aspects of the sound that are not FR related, such as the presentation of minute details, reverberant trail-offs in the music, imaging cues and the like.
One of the most powerful demonstrations for speaker break-in that I know of, is to take a stereo pair, set-them up in a known good configuration, then play ONE of them for a hundred hours. If you started out with a nice balanced stereo image, and solid mono image, after break-in of one speaker, these aspects will be GONE. It will sound like two completely different speakers playing, instead of a stereo pair. Of course, the secret here is to set them up while both speakers are totally green, and NOT play them too much to achieve the set-up, but using yet another pair of speakers to do this, then substituting the green pair. Only play them long enough to get a handle on the imaging, and that it is centered.
Jon Risch
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Follow Ups
- Re: You're still not exactly comparing apples to apples - Jon Risch 10:32:09 11/11/06 (2)
- Jon, do you believe speakers go from dreadful to incredible via breakin? (nt) - John Ashman 17:00:40 11/12/06 (1)
- Re: Jon, do you believe speakers go from dreadful to incredible via breakin? (nt) - Jon Risch 19:31:07 11/12/06 (0)
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