delta3092 Posted July 9, 2009 Report Share Posted July 9, 2009 Please redirect me if I'm on the wrong thread.I was just wondering what is the difference between a single magnet speaker and a dual magnet speaker.I hope somebody can help.Thanks in advance. Quote Link to comment Share on other sites More sharing options...
audioguru Posted July 9, 2009 Report Share Posted July 9, 2009 A second magnet can add to the magnetism of the first magnet instead of using a bigger magnet.If the second magnet is physically reversed then the speaker becomes shielded with a very low external magnetic field. Quote Link to comment Share on other sites More sharing options...
Hero999 Posted July 9, 2009 Report Share Posted July 9, 2009 If the second magnet is physically reversed then the speaker becomes shielded with a very low external magnetic field.Doesn't that lower the sensitivity? Quote Link to comment Share on other sites More sharing options...
audioguru Posted July 9, 2009 Report Share Posted July 9, 2009 Doesn't that lower the sensitivity?I don't think so. Quote Link to comment Share on other sites More sharing options...
Hero999 Posted July 10, 2009 Report Share Posted July 10, 2009 Why not?If another magnet in phase with the speaker magnet makes the field stronger then another magnet out of phase the speaker magnet will make it weaker. Surely a stronger field means higher sensitivity and a weaker field means lower sensitivity. Quote Link to comment Share on other sites More sharing options...
audioguru Posted July 10, 2009 Report Share Posted July 10, 2009 I have seen speakers with two magnets. Bucking magnets are sold.Maybe adding the second one is only for shielding, not for added magnetism.A steel cap is also used in addition to a bucking magnet.The strength of the bucking magnet is not as strong as the strength of the main magnet so the parameters of the speaker are not changed much.The magnetic field of the main magnet is concentrated inside the speaker and only a small amout of external magnetism needs to be cancelled and shielded. Quote Link to comment Share on other sites More sharing options...
KMoffett Posted July 11, 2009 Report Share Posted July 11, 2009 I just knew there would be a market for all those magnetron magnets I've pulled from dead microwave ovens. Lets see, (2 per magnetron x $4.50) + $20 excessive shipping charge...that's $29 per dead oven. ;)ken Quote Link to comment Share on other sites More sharing options...
delta3092 Posted July 12, 2009 Author Report Share Posted July 12, 2009 thank you masters. ;Dthat cleared things up a bit. Quote Link to comment Share on other sites More sharing options...
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