10" subs don't go low enough. And no, more 10" subs won't go lower! REAL Bass starts at 15".
"Broom Closet", AKA Man Cave: AVR: Denon X6700H /\ Front LR: JTR Noesis 212RT /\ Center: JTR Noesis 212HTR /\ Surrounds: PSA MTM-210T's-JBL 590's (not yet in use) /\ Subs: 2-JTR CAP 4K's in TL Form backed up by 2-Rythmik FV18/PC's Near-field /\ Display: Vizio Quantum X 85" TV P85QX-H1
*Living Room: AVR: Yamaha TSR-7850 /\ Fronts: DCM TP260's /\ Center: DCM 260C /\ Sub: PSA S42 IPAL /\ Display: Panasonic 85" Plasma