How important is the match of subs DiRAC ART

[Arc78]

Hi all audio friends I think this is the last piece to my system I am about to build.
It’s a 7.4.4 system as some of you maybe know.
I’d really appreciate some help and insights,

Here is the Sub question:
i have already two identical B&W ASW 608 it’s a small room about 4.5mx4m
I also own a ASW 10CM S2 I got with some of the CM S2 system (CM10, CM8, CM6, CM5, CMC S2)
Now to get 4x sub working with Dirac Art what to buy?
i guess its best to have 2xA and 2xB subs equal or 4xA
But ASW 608 and ASW 610 are really easy to come by at great value and they are really musical. The ASW CM 10 s2 might take years to find…. What to do???
How to combine? I feel a little bit sorry to sell the ASW CM 10 sub since it’s same design and aesthetically matched with the CM series. And it’s always a hassle to sell. But what will be best and how to think?

 

[alvigg]

Dirac will measure responses to each sub independently and then make it right. I have 4 SVS subs, one bigger than the other and Dirac Bass Control does excellent job of blending. I also don't have them placed symmetrically.

 

[Arc78]

Ok 2 x A, 1 x B and 1 x C won’t be major problem?

 

[alvigg]

Probably depends on the weakest sub. If all are good, then I doubt it. My first attempt used two very old subs. I saw the benefit but Dirac didn't make mediocre subs great.

 

[Arc78]

I find it hard to find how to think
In Sweden I have subs like this to choose from
Klipsch

Klipsch Reference R-120SW it’s larger and open, less musical?​

bowers & wilkins asw610 closed smaller driver a bit more pricy maybe match the other three best??

SVS SB-1000 Pro -subwoofer Highest price closed design larger drawer and box​

DALI SUB E-12 F most expensive​

How to think?