I believe what the OP referred to here is what is called "absolute polarity".
This is outside of how your speakers are wired and assumes that speakers need to be moving out to produce certain sounds, not in. From what I have read at AVS Forum, it's pretty controversial. Only high-end equipment has controls to alter polarity, and even then, only certain people claim to hear a difference. It's a fundamental idea affecting how speakers work. We think that to reproduce a drum, for example, the speaker cone needs to move the same way the drum head moves. But since the drum head moves down, should the speaker cone move in or out? That is the concept of absolute polarity. Speaker phase, i.e. wiring, has very direct and very measurable effects if the speakers are wired unalike since it creates constructive and destructive interference when sound waves from one speaker meet sound waves from the other. Absolute polarity assumes your speakers are wired in phase but that sound can only fundamentally be produced one way by speakers. As I said, it's controversial. There are many who believe it is a myth. http://www.avsforum.com/avs-vb/showthread.php?t=595226&highlight=absolute+polarity ...one myth proponent in that thread is Ethan Winer, who is quite an expert. Michaelwagner wrote: > P Floding Wrote: > >>With a high resolution system (a phase coherent one) the difference >>between correct and incorrect polarity on some recordings are very >>dramatic. > > I have one of those test setup CDs that plays honks and chirps at > different frequencies, plays into the left and right channel so you can > see if you reversed your speaker wires, etc. > > It has one section where the voice says > "This section is recorded in phase" and then > "This section is recorded out of phase" > > Even with pretty lousy equipment (DJ system in an auditorium for a > dance kind of equipment) I can hear the difference. So I don't think > you have to be all that high-end to hear a phasing problem. > > The thing I don't get is, do people really release recordings with the > phasing wrong? > > -- ___________________________________ Mark Lanctot ___________________________________ __________________________________________________________ Find your next car at http://autos.yahoo.ca _______________________________________________ Discuss mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/discuss
