As others have said, absolutely go with two. Your room isn’t all that big, and two E110s will be more than sufficient as they go down to 23Hz -3dB. If it was me I’d get two Rhythmic F12Gs as you can get two for just a little more than one E110, and the F12G goes down to 14Hz. Either way, two good subs are better than one bigger one especially for music. Just my $0.02 FWIW.
Would you choose 1 ou 2 subwoofers for a stereo set?
Would you choose 1 bigger sub or 2 smaller ones?
For a living room 6 x 8 meters (speakers on the smaller side). (3.5meters high)
Mcintosh MA9000 + BW802 D3
I listen mostly to digital audio (DAC / Streamer)
Looking into 1 JL Audio 13" or 2 JL Audio 10"