Thanks to everyone. I discovered the fix on my own. On my player, there is a an option under the audio set-up menu called "virtual 5.1". It's a bit of a misnomer, because what the player actually does is convert the output from 5.1 to 2-channel audio. I guess Pioneer thought it was clearly implied that, if you're not using 5.1, then you have a 2-channel set-up.
thanks again for all the thoughts. On, and yes, the LOVE DVD-A sounds GREAT! Part of the reason is because it's in 24/96, but the CD version sounds great, too. I've read that this is because Giles and George Martin used the original unmixed tapes (i.e., the original bass track by itself, the drum track by itself, etc.), rather than the mixed master. Because of the limits of the 4-track system they used in the 60's, the master tape was essentially a 3rd or 4th generation copy of each unmixed track, with all the associated loss in quality. Listen to the re-mixed Yellow Submarine CD released in 1999-2000, and compare it with the 2009 remasters. At least on my system, Yellow Submarine, like LOVE, sounds vibrant and explosive. I hope, someday, they release all the Beatles albums remixed without the copy of a copy of a copy loss of the remasters. cheers