Thanks
@Ultrasonic hmm definitely see where you are coming from

Good to hear from you
@MI55ION it’s been awhile. Have the sub placed at the front next to an ATC40 then a stand. Integration has just been through T778 using full Dirac with a Sound Counsel filter!
Cheers speed
Hi speed, its been a while indeed!
Without any measurement data its hard to predict what you are getting at the moment or if indeed a second sub would add anything. You also have to define what you mean to "further improve things".
In the absence of this data the next best thing is to use REW room simulator if your room is of a standard rectangular shape. If you do a rough sketch with the dimensions along with location of 1st sub and your MLP and proposed location of 2nd sub, we'd have something to work with.
Generally the consensus seems to be that when mixing subs, especially ones that are significantly different in design and performance to one another, the result could be a downgrade in performance overall. Under rare circumstances you could make them work together to fill a null in the response but that needs to be precision targeted.
The "lesser" sub could drag the performance down of the better sub, hence the advise is to proceed with caution.