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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: P.S. posted by Jim Austin on February 23, 2007 at 06:28:30:
Jim,the measurements in your link show the Mackie tweeter is inverted in polarity, arriving about 4 inches before the mid-band tones of their woofer, with considerable ringing just above 20kHz. This is not great time-domain behavior, even though I have been told that the reviewer, Mike Klasco, knows a great deal about speaker design. Maybe he didn't want to upset the Mackie company, who knows? What you are seeing in that impulse response is a speaker that is smoothly changing the phase between woofer and tweeter as the frequency goes up the scale. This is why the amplitude response is quite smooth and flat. Time coherent design can produce the same amplitude response, but with much more sharply-defined transient response. But this would have cost Mackie much more for the next-level-better drivers. Considering their retail pricing, that would have crushed their sales to the home recordist. I'm trying to talk a fellow musician here, Bruce Becvar (Windham Hill Artist) into some time/phase coherent designs as he re-vamps his home studio. I'll let you know his opinion on them if and when he makes up his mind, as this has been ongoing for the past few years, LOL.
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- Re: P.S. - mauimusicman 13:01:12 02/28/07 (0)
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