Here is the low-frequency part of the setup I am considering (only thing I currently have is the amp). This will be an apartment, so I'm thinking the bass shakers will help me keep the overall volume down without losing that impact feeling I love. -one Adire Tempest 4ohm -8 25W Aura Bass Shakers (8 ohm net, 4 per couch in array) -Parasound 1500A (205x2 8ohm, 315x2 4ohm) -HK 520 1. Can I use the two channels separately on the Parasound like this? IE would I get 205W to the array of Bass Shakers and 315 to the Tempest? 2. I think the HK520 offers x-over at 40/60/80/100 to the sub (not independent by channel though like the HK525). I haven't picked my mains yet, so I don't know for sure where I'll crossover, but probably 80Hz most of the time. I heard the FMOD 50Hz filter suggested for the Aura bass shakers- should I get one? 3. Would an equalizer be recommended for the shakers and/or sub? I noticed that the Art 351 is recommended by SVS. Could I use the Art 355 and is it just the two channel version so I can do the sub and shaker separately? Should I still use the FMOD 50Hz on the shaker channel or can I just knock the upper frequencies down 12dB? Can I just use regular RCA interconnects with this setup? 4. I am so tempted to get 2 Tempests or a Tumult, but don't need any complaints from neighbors. Will this be disappointing (room might be 20x15x8 and open to 9x11 kitchen and several doors)? Is 315W good for a Tempest? Any other suggestions? Thanks!