Reversing Polarity -- Voodoo or Easy Tweak?


In a recent thread I noticed a comment about reversing polarity of speaker wires on both speakers which sparked one of my earliest audiophile memories.

On the liner or cover notes of Dave Grusin: Discovered Again on direct to disc vinyl, circa 1977, it too recommended reversing the polarity on BOTH speakers, for best sound.

Although my first system was a 25 WPC Technics receiver with Infinity Qa's and lousy speaker wire, I still remember getting very enthusiastic about reversing the polarity and wondering if it did anything.

Can anyone explain this and/or recommend if this is even worth the experiment?
cwlondon

Showing 5 responses by tbg

Cwlondon, I understood you in your first post. Few are stupid enough to wire one speaker out of phase with the other. Absolute polarity is a different matter. I wish I had an easy way to have switchable polarity, so that I had a choice, but I don't have. Even cheap digital players used to have this, but no longer. I am not about to change speaker leads for each cd or record.

In the past, on perhaps 10 percent of my records changing the absolute polarity made a great difference. On about 30 percent it made no difference.
Eldartford, I suspect that you are right that would see little difference on a scope. This is always my concern as in some cases I heard a decidedly different sound with a reverse in polarity. I suspect that recording engineers indifference to polarity or multi-miking may contribute to why some records and disks seem unresponsive to such changes. But if recordings in which I hear differences fail to show a difference on a scope, I suspect that you and I would come to different conclusions.

At any rate since I now have no easy way to reverse polarity and some recordings sound much better than others, I can only suffer along. I did have a parafeed output line stage from Exemplar which could easily have had a polarity inverter as it was transformer coupled, but it is not available in the H-Cat. Other tube units that I have had, notably the Siltech Millennium did provide a useless inverter which introduced another tube stage to get the inversion.
I guess I would say that in the past when I had the capability on digital easily compare that about 1 disk in 10 made a difference. I should say that Clark Johnsen also once visited when I had the capability on vinyl and digital. He heard it on more recordings, and when he pointed out what differences he was hearing, others did indeed also hear them.