That's OK you don't really need REW, all you need is a MiniDSP 2x4HD, which comes with a plugin (software) that you use to load the BEQ filters for an individual film from a PC/laptop.. you then use a another program (Github) to download the new BEQ filters as and when they're released.. It sounds like a bit of faffing about but it's really simple to do and very effective, takes about 30 seconds to load a file. There's a Bass-EQ thread on here..
Making Movies Sound Better With Bass EQ
The graphs come from the Bass-EQ thread on AVS which is
here. This is where all the graphs are posted, they are then added via links in the OP, and the filters are added to the
Github repo. This is all done by a few members who keep everything up to date and maintained..