I'm in the planning stages for a home theater and would love to get opinions on how to support my theoretical space with a couple DIY subs. My main questions are:
Sealed or ported (based on my space and specs below)
15" or (gasp) 18" drivers? (again, based on specs since I know the default is "more 18s!!"
Dedicated, sealed theater
Approx. <2000 cu. ft (likely 15x18x7)
AT screen and false wall, hoping to minimize depth (i.e. 12-18" ideally; open to a custom box like Cyklops; size is limited by space behind false wall/AT screen)
100% movies, no music unless it's in a movie
Planning for DIYSG LCRs (i.e. HT10's) and 7.2.4 system
Sub Budget - flexible, but not unlimited. At most I'm thinking 2x UM18s and iNuke3000DSP, but look for bang for the buck
Room will be soundproofed and will need to avoid bothering the rest of the house (DD/GG, hat channels...)
Concrete floor, possibly using a sand-filled stage
Happy to try to answer other questions to help steer the recommendations, but my subwoofer vocabulary is limited. Thanks in advance.