HI
I will come up with the connectivity diagrams later.
The following is addressed to the OP and us, the neophytes objectivists.:
Please do not take the following as patronizing. It is not. Getting the best our of an Audio system takes time. Not a couple of hours, not a few days or one week.
It takes more , it may take month-S, as in several, as in more than one. It's not, thankfully, a never ending process but it takes a while and it works with iterations. IOW you go back to where you started and do it over a few times. While one can get a usable and/or satisfactory response from Audyssey, Dirac or other"automatic" correction systems, Pressing of a button will not bestow you with the best bass you system is capable of in
one trial...
First off: You must read and research. There are numerous YouTube material on the subject but read first, watch when you are ready to proceed. Try to digest the copious amount of material and try not to get confused. Concentrate on bass for now. Multiple subwoofers work and it is the best way to get Great bass in one's abode.
There is no better way. Even the better full range speakers will provide better sound when coupled with multiple subwoofers. Even speakers with built-in subs. It is always better to have bass radiators in room for best sound. Those location )for best, smoother bass) ALWAYS differ from the speakers location for better imaging, soundstage, reproduction of the rest of the spectrum. Physics, not opinion. It is quite possible to get extraordinary good sound at one listening position with a pair of full range speakers. In most cases, as in more than 90%, you will get even better sound with subwoofers added to that full range system, even if you decide to run the main speakers full range. I see multiple subwofers as essential to great sound. IMHO, no system is complete without subS, even if one listen to genres with apparently no lows, say, Western Classical Chamber music or strictly vocals. There is always a debate about the logistics of multiple subs, and their WAF or HAF(Husband Approval Factor). It is easier to hide a sub than a main speaker...
On the multiple subs there are two main schools. The Harman and the slightly different Geddes. There may be others, I am not aware of.
Conduct this search on google: "Harman Multiple subwoofer paper" and read. Harman's in a nutshell: Best is 4 subs placed in the middle of each wall in a simple rectangular room. How is 'nother story. You must read (a lot ) to know how.
For Geddes we have these
Two Great Articles on Multiple Subwoofers by Dr. Earl Geddes
Searching will provide you more. I prefer the Geddes approach. In essence:
You use 3 subs:
The most powerful one in a front corner of the room. The others? Almost anywhere. FOr exemple one on the left side somewhere, a third on the opposite wall slightly higher or even in the back. Geddes prefers bandpass subwoofers but it works with any subwoofer, even ported.
I prefer the Geddes method. It is not superior, just slightly different and allows the use of different subwoofers in a quasi random placement.
One more thing. Measuring takes time. Learning curve is tortuous. Many of us marvel at some here who regularly come up with incredibly useful graphs, I am thinking about Ray Dunzl here, his graphs speaks and answers questions. If you were to ask him, I am sure the answer would be that it took months to come up with this fluency. I know this from experience and I haven't posted anything of serious relevance here. I will in due time when at some point my measurements make sense to
me .
So be patient. You will be rewarded and the cash outlay can be reasonable. This being the ASR: $1000 can provide formidable bass: smooth within plus or minus 3 dB from 30 to 100 Hz @ SPL 100dB in rooms as large as 5000 cu-ft rooms.