If the Vas on the E145 is correct at 275 litres, that will increase both mms and BL.
Lets hope it`s only one parametre that is wrong, and the Vas should be 428 litres

The avatar I do also like, a guy in Norway drawn it for me.
It`s of my compact living room speakers....

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The bass department is open baffle.
2x2226 and 2220 at top.

I do look at interest at the E145 with its low mms, high vas and lower fs than the 2226, maybe E145 would do a bether job than 2226...?
But it`s not exactly easy to find four E145 in good condition..