Well, my the way my Sony works, if the speakers are set to small then the crossover frequency can be set, if they are set to large, that feature is automatically disabled. You said the Marantz has the crossover defaulted a 100. That seems awfully high to get any base going through that woofer.
Try setting the crossover down to 50 or 60, if that doesn't work then set the speaks to large, actually I would have any quality speaker set to large, I'm thinking small settings are those little scrawny satlelites, and don't even worry about crossing over, let them babies rip and set your set you sub to blend in.
Oh, I thougt bass management was if your DVD is SACD 5.1 and you pop in a regular CD, that will only use 2 channels, so the bass management sends the lows to your sub, in essence a 2.1, and there you have real bass with 2 channels.
If you know diffenrent let me know, I'm pretty easy, I guess that comes with living in the Big EASY!!
