It's my Harvard training (Ph.D. biophysics). But yes, I am from the far-friendlier Midwest.
Why do some manufacturers reverse preamp polarity in the first place?
My Rogue RP-5 reverses polarity, so I switch the pos / neg at speaker terminals. The manual does not mention this, however, I wrote the company and they the amp does reverse the polarity.
Now my question is...why? I would say 98% of buyers of this amp do not know to reverse the cable connections. I would say most reviewers did not as well. Yes, I realize, polarity reversal is not noticable in most instances. Especially, since many recordings are all over the place when it comes to polarity (at least that is what I've read).
So the question remains...why...why not just have the amp terminals set up so the buyer can just plug in as normal?
Now my question is...why? I would say 98% of buyers of this amp do not know to reverse the cable connections. I would say most reviewers did not as well. Yes, I realize, polarity reversal is not noticable in most instances. Especially, since many recordings are all over the place when it comes to polarity (at least that is what I've read).
So the question remains...why...why not just have the amp terminals set up so the buyer can just plug in as normal?
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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 |
- 73 posts total