Always two or more sub woofers.
I have two REL S812s and love the balanced distribution and performance. Tuneful and dynamic.
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"