What is the speaker configuration when playing the RES through the 7 speaker system? Are we just missing the center channel? (2+2 fronts & 2 rear speakers and the sub, right?) thus...4.1.
Are the front and rears separated?
There is no indication that the Pilot has Dolby digital decoding which would approximate a 5.1 system. The 5 refers to 5 speaker channels (center, L front, R front, and L surround, R surround) with the ".1" a low frequency speaker.
If it had 5.1 (or "4.1") then the L rear and R rear speakers would only play the surround sound channels and you would hear nothing but echos and such from these speakers.
Sorry, but the Pilot simply has stereo sound (L and R) with one speaker being a subwoofer. The number of speakers does not indicate surround sound. If it did, then my college car would have been a 12.1 system.