Many users have problems with weak bass when playing multi-channel SACD and DVD-A discs. Speaker level & balance (inc'l SWFR) should be calibrated separately for both digital sources such as Dolby 5.1 PLUS analog sources such as multi-ch SACD and DVD-A. You can't rely on the pink noise generator in amplifiers or even the player, as the signal path is different between that and playing actual material. Unfortunately there's not a widely available SACD/DVD-A calibration disc.
However since DVD-A has a Dolby 5.1 compatibility track, you can set the Denon player to "DVD video", play the DVD-A disc, and listen to the relative main vs SWFR output levels when playing music in DD 5.1 mode. Then set the player back to "DVD audio", and the DVD-A disc will play in high-resolution format. The SWFR level in that format should be at least as loud (relative to the main channels) as when playing the DD 5.1 version of the same music. If bass is weak, turn up the SWFR gain on your amp, player or both.
Unfortunately the DVD-757 player has attenuate-only output trims (not boost). You can gain more SWFR boost by setting the 5 main channels in the player to (say) -6db, leaving the SWFR trim at 0db, and turning up the amp master volume a bit.
As already stated two of the best surround albums are Pink Floyd's Dark Side of the Moon, and Dire Strait's Brothers in Arms (which won a Grammy for best surround album).
Other very high quality surround albums are:
Fleetwood Mac - Rumours (DVD-A)
The Eagles - Hotel California (DVD-A)
Elton John - Goodbye Yellow Brick Road (SACD)
Roxy Music - Avalon (SACD)
Unfortunately it now appears surround music will only be a marginal format, and may even end up like quadrophonic (the failed 4-channel surround system from the 1970s). The industry screwed up by having a format war (SACD vs DVD-A) in a technology that was difficult enough to bootstrap, anyway. The problem was worsened by poor standardization, documentation, and support.
