Hello all!\n\nNew here. I’ve have just moved into a new home (not a new build), which has a dedicated theater room. I’m planning to make it into a 7.X.4 theater.\n\nThe room dimensions are 17’ (length) x 12’ (width) x 7.5’ (ceiling). It has drop down ceilings. For ~1600 cubic feet.\n\nThis is the equipment in the room right now.\n\nAll timber matched Polk speakers:\nLSiM 707 Front LR,\nLSiM 706C Center,\nLSiM 702 F\/X Surround LR,\nLSiM 703 Rear Surround LR,\nYet to be installed 4 x 80 F\/X LS in-ceiling speakers\n\nDenon 4300H capable of two subs. 9 channel amps and pre outs for additional up to 11 channel in all.\n\nLG 65E6 OLED.\n\nI’m thinking to get 2 subs to cover the room with a $1k-$2k budget in all. If I go for a ~1k sub, I’ll buy one now and get a 2nd one later. I’m hoping I can bag the subs on discounts so something in the range of $1200-$1300 usd discounted close to $1000 (I guess not all subs are discounted this low), and repeat this within a year. But I’m not sure if I need to spend that much for a room of this size. I’m also not sure weather I should go for ported or sealed. The room has a door in the rear-middle along the width, and one on the left wall closer to the rear, to an adjacent smaller room along the length where I plan to keep all the AV equipment.\n\nI also plan to get a monoprice monlith 7 channel amp (200w \/channel) to drive the 7 floor speakers, and let the Denon drive the ceiling speakers.\n\nMy primary usage will be Movies 65 \/ Music 35%.\n\nBefore making the post I was leaning towards the Monprice Monolith ported subs, which come with foam to make them sealed, so I could potentially try both and tune to my liking. I’ve near really purchased a nice sub and want to get the best bang for buck.\n\nEventually I plan to get a projector plus screen, and have two row seating. The two row seating might be tight as I was thinking of power recliners, still figuring that out. I have the 703s on stands and have yet to mount the 702’s to the wall.\n\nAll advice and suggestions will help! Thank you!\n\nps I’ll be willing to increase the budget if better performance can be had for 10-20% more $.