Why do some manufacturers reverse preamp polarity in the first place?
Of all the thousands of recordings I have had over the years, the only recording in my collection that called for reversing polarity (at the speakers), was a LP of Dave Grusin- Discovered again. Seffield Labs. I couldn't hear any difference in sound quality, at the time. That was many systems ago. Maybe I should re-visit that experiment and see if I hear any difference now. |
Well, Sheffield Labs recordings are actually on the Polarity List as R Reverse Polarity. +1 for George Louis. On a sour note, FIM recordings also appear on the Polarity List as R. A discussion of the Polarity List somewhere in cyberspace prompted this comment. I know everything I've done for FIM has correct polarity. Bruce A. Brown Puget Sound Studios Stereomojo reviewer Seattle, WA snapshot of Polarity List Reprise – Joni Mitchell – Blue N Rhino R River North Records N Rounder R SANSTONE MUSIC – MEL TORME – THE LONDON SESSIONS R Sheffield Labs R SHILOH RECORDS – Greg Harris – Acoustic II R SIRE – Talking Heads – Stop Making Sense R Solid Air R Solid Air Records – Grove Masters R Sony R Sony – Miles Davis – Kind of Blue R |
He does and presents no evidence whatsoever. He came into our room one time and insisted that our room was in reverse polarity. I flipped the polarity switch on our preamp. Then he insisted that you couldn't hear it on LP- only CD. So I played the same track on CD as I had it on hand. Then he insisted that you couldn't hear it if the source was analog...Thanks Ralph - priceless! |
