2. amps-preamps
  3. 147027-10803

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?
aberyclark
geoffkait's avatar
geoffkait
23,365 posts
 
Confucius say man who have conversation with self have captive audience.
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celander's avatar
celander
1,502 posts
 
It's my Harvard training (Ph.D. biophysics). But yes, I am from the far-friendlier Midwest.
geoffkait's avatar
geoffkait
23,365 posts
 
That figures.

Innocent questions: How much do you know about Rupert Sheldrake? How about PEAR (Princeton Engineering Anomalies Research)?
mr_m
1,900 posts
 
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.
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