I'm new to this forum and would like to thank you all for all your contributions I have learned a lot reading the different threads.
I have come across a piece of equipment that some of you might want to look into. I didn't know where to post this but as it deals with correcting the signal I figured it might not be misplaced here. Please correct me if I'm wrong.
So the equipment in question is called Ultrabass Pro EX 1200 from Behringer. I got it second hand on the french CraigsList. What it does basically is that it takes the lowest frequency of the signal at any given moment and digitally brings it an octave lower or 2, depending on the settings.
I should specify that I apply the correction of the signal only to my Crowson actuators. I live in a small appartment and wouldn't benefit much from the device given the lack of space for low acoustic bass to develop.
Nevertheless, I have had satisfying results. I have not run it with many movies yet but, for example, Empire Strikes Back and Return of the Jedi benefit considerably from it. The Asteroid Field in Empire Strikes Back has a whole new dimension to it. Same for the whole third act in Return of the Jedi. The rumble at the beginning of Star Wars ep III is somewhat cleaner, but it comes at the expense of some other previously noticeable small effects. Again, I can only talk of what is felt with the actuators.
As for some other movies who lack bass, (The Hobbit : An Unexpected Journey might come to mind...), well...the stone giants scene is a little better and feels a tiny bit more immersive. But still very VERY far from its potential. Avengers : Age of Ultron I have found to be more than improved. Kung Fu Panda got a little bulkier as well.
That is about the extent of my tests so far but I was enthusiasted enough to think it might interest some of you. I got it for 75 E plus 25 for XLR to RCA cables so I figured it wasn't that much of an expense, even if only to conduct some experiments. This ended up yielding very interesting results so I thought I'd share it on this website.
I hope that was worth a read.
Thanks again to everybody.