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Tech Square Technical and speculative discussion of amps, cables and other topics. |
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Tech Square Technical and speculative discussion of amps, cables and other topics. |
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In Reply to: Time-aligned speakers ... a waste of time? posted by andyr on February 19, 2008 at 02:28:55:
This is topic that has been, and I'm sure will continue to be, discussed and debated. Feelings and thoughts about it are deeply held and arduously argued. (Don't let Roy Johnson, Jim Theil, Kevin Voecks, Jeff Joseph, and actually I suppose just about every other speaker designer see this thread ;) )Arrival of all the rarefactions and compressions that come from the speakers to the listener at the right time (which means the way they were captured on the source?) seems to me to just make sense, at least on an intuitive level. If the sound arrival is different from the source, isn't this a type of distortion?
In my simple-mindness, I'm not always entirely clear about the difference between polarity and phase. I certainly do hear differences in different polarity connections, though, and some connection arrangement sound better than others.
Like many audionuts, over the last 30 years I have listened to a LOT of speakers. Some have lead with claims about being phase correct. I currently own about nine different speakers from about five different manufacturers. These are the speakers I've believe to be excellent values. Of these, some claim phase and time correctness, some don't.
To mention a few of these speakers in the context of this thread, my Green Mountain Audio Europas are all about this (the drivers are staggered AND the first-order xover is intended to minimize phase shift). My Snell C/Vs are not; at least they're not about phase correctness. My Magnepan 1.6s run the tweeter/midrange quasi-ribbon driven 180 degrees out of phase. My old Spica Angeluses and TC-50s were about the correct timing of sound arrival. I have no idea what went into the design of my Polk RT25is (used to nice effect for two-channel HT and TV duty) and RT35is (I got these as part of the purchase of the RT25is and I was very pleasantly surprised at the performance of this speaker.), not do I know much about what went into the design of my Sound Dynamics RTS-3s.
Each of these speakers are designed with with more or less concern over correct phase/time arrival. For those speakers claming to be phase/time correct, I don't know for certain just how well their claim is met. But, whatever the level of concern around phase and time, I think they all are very good performers.
The net of it for me is that I'm not sure wat exactly the relevance of being phase and time correct is. It seems that phase and time arrival different from a source is distortion, but lots of speakers perform plenty well that don't make effort to be phase and time correct, and vice versa. There're lots of considerations that go into designing a speaker, with phase and timing being a part of it.
- SJ
Edits: 05/22/08
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Follow Ups
- RE: Time-aligned speakers ... a waste of time? - tvr2500m 11:04:44 03/07/08 (0)
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