Since it's an active subwoofer, and there's no RCA line outs for subwoofer, it may be pretty hard to get Bass shakers to work.I checked the owners manual on Grimball's Magnavox MMX45037 system. The systems MFX450/17 receiver does have a subwoofer preout.
You would need a separate amplifier to drive the tactile transducers. Perferably one with a volume gain control. This will allow you to adjust the level output of the shakers independently of your subwoofer.
Split the subwoofer preout using a 1 male to 2 female Y-adaptor. One line would feed your powered subwoofer and the other would feed the amplifier driving your shakers.
3. Is it worth it?Do a search on Bass Shakers and read for yourself. There are quite a few members that are pleased with the Aura's.
I have been using tactile transducers in my system for over 5 years. My first setup was an array of 8 RBH FX80 units. (ultra high performance Aura's)
I replaced the entire array with a pair of Clark Synthesis 329F's and then upgraded to their Platinum models when they made their debut.
My current setup consists of a pair of original Buttkickers driven by a pair of bridged Crown K2's.
IMO a properly setup tactile transducer arrangement only adds to the HT enjoyment experience!
Would it work to mount it under the bed frame?Yes, I have 2 mounted to the headboard of the DPL set up in the bedroom. It's hard to compare to my HT in the Living room but they have less of an effect than on the couch. There are other variables so I cant say for sure, but you might need more than 2 for a full/queen/king size bed.