Hi all, I'm craving more bass for my addiction. I have a small treated room, only 3.6 x 2.7m. I currently have a custom made sealed Fi SP415 with CV2800 amp in the front left corner and a PSA S1800 in the rear right corner. These have a miniDSP between them and my Anthem, they are time aligned with much help from Matt Khan. I'm now thing about either swapping a sub for a vented one or adding another 1 or 2 vented subs. Option 1 - would be to add 2 x BK Monolith+ to my front wall under my L&R speakers which are wall mounted, down firing ones would fit quite nicely. Would these add much? I imagine that it would ease the load on all speakers, I watch at about -17 or -16 normally. Would these add a bit more pressure to the room? Option 2 - Buy a PSA V1811 and stand it on top of my S1800 firing at the seating position. Option 3 - Buy a PSA V3611 and replace the S1800, this is probably the most expensive option. My hope is that a vented sub will add some trouser flapping air movement to the bass. It may sound crazy but I have huge bass needs and this room seems to eat bass up.