Technical question on phase inversion.

Roughly speaking, 50% of all recordings are 'phase inverted'. If the recording is multi-miked and multi-tracked, its going to be really hard if not impossible to hear the difference.

The audible significance of inversion or non-inversion of polarity, aka "absolute phase," is controversial. In part because many recordings are comprised of a random mix of polarities for different instruments and/or singers. Consistent with Atmasphere’s comment, it is most likely to be significant on the relatively few recordings that were engineered using "purist" techniques, meaning just two or three microphones and minimal post-processing.

Interchanging + and - on both speakers (or on the corresponding output terminals of the amplifier) will of course compensate for the polarity inversion your preamp imposes on both your CD and vinyl sources. However if the CD player is also known to invert polarity (which would probably be mentioned in the measurements section of Stereophile’s review of the player, if they have reviewed it), and your phono stage does not, then you would not want to interchange + and - on the speakers. Instead you could make everything come out correctly by interchanging the cartridge connections for each channel (i.e., interchanging white with blue, and interchanging red with green).

Regards,
-- Al

Thanks for your responses, so far. I gather that "absolute phase" is not really absolute, as it can change with the recording and even the source component can play a part. I doubt that my Oppo 105D contributes to the polarity inversion, but who knows (LOL). In any case, it just feels strange to reverse the cables on the speakers. Based on your comments, and the manufacturer's suggestion, I'll leave them reversed. Thanks for your explanations and suggestions. 

We always get into the same phase lock loop. Lol. The guy who has studied this whole absolute polarity the most, George Louis, the Polarity Pundit, says that of the audiophile recordings one normally thinks of, you know, the RCA Living Stereos, the Mercury Living Presences, Deutches Grammophons, Opus, Proprius, you know, things in that vein, almost all of them are inverted in polarity in the CD versions but not so much at all in the analog versions. So, for digital it’s not 50%. Not even close. Has anyone actually listened to an RCA Living Stereo CD? Yuk!

If the issue is really bothering you, buy a copy of the  'CHESKY RECORDS
JAZZ Sampler
and
Audiophile Test Compact Disc
VOLUME 1'.  It includes a few Absolute Polarity tests, to enable you to see if you can detect the difference(s) with phase inverted, along with other tools to help you properly set up and test your system.  If you can't audibly discern phase inversion with this CD: don't worry about it.    If you can: it will enable you to make the corrections necessary for your greatest listening pleasure.  Of course, then you'll have to listen to every recording in your collection and mark some for phase-reversed listening(if there's a reversal switch, somewhere in your system).   A number of recording in my collection sound the same both ways.  Most don't.  .   http://www.amazon.com/Chesky-Records-Sampler-Audiophile-Compact/dp/B000003GF3