Join Date: Oct 2009
Location: Bay Area, CA
Car: 2010 Outback 3.6R
Feedback Score: 0 reviews
Very interesting, Illinois_OB10fan, about the equalizer controls for your H-K system-with-Nav (which don't seem to be available for the non-Nav H-K).
One side comment is that your post implies that your system offers surround-sound modes, including Dolby PL I and II.
In these modes, I'd expect very little output from the rear speakers, since they would just be receiving the matrixed surround signal (which is typically a fainter, time-delayed signal, and is frequency-limited as well). With no actual center-channel speaker, most of the sound would be coming from the fronts, and in this situation it also makes sense for the sub-woofer to be only using the front signal.
But there is presumably also a regular stereo mode in which the front and rear speakers should basically be receiving the same L and R signals.
My Volvo C70 supports Pro Logic II (it actually has a center channel speaker on the dash), and in fact the rear speakers in this case are just providing the "surround effects". It also offers a "3+2" stereo mode in which rear speakers receive the same signals as the fronts, and a derived center channel is fed to the center dash speakers. The manual for this car suggests that the Pro Logic setting is not very good for rear-seat passengers, as they just tend to hear "effects".
Anyone who is getting very little sound from the rear speakers, even with the fader favoring the rear, may want to make sure that they are not in some form of surround sound mode.
(For better or worse, my non-Nav H-K system doesn't seem to have any surround-sound modes. The sound from the rears is maybe not quite as good as from the fronts, but not drastically so. I keep the fader setting at R1.)