I bought a S90 Momentum Plus last week. Mostly I love it. I did not want the B&W system. Not for almost $3K. And I've got kids, those beautiful grates wouldn't survive anyways; I saw a number of them pinged in XC90s on the lot.
Anyway, love the car. My only real gripe is the sound system. It's laughably bad. It sounds like the only speakers present are in the front doors. If you drag the balance to center-rear, you get almost nothing. Your average econobox comes with a far better system. This is our 7th Volvo. About half had Dynaudio, but the other half were base systems. This one is easily the worst by a huge margin.
So I'm wondering, without having to go back to the dealer and test drive other S90s, is this just how the base system is, or is there something wrong with mine? The front door speakers are plenty loud/nice. If the center channel and rear deck speakers didn't completely drop the ball it'd be a perfectly nice system.