I am working on finishing up my basement and need advice on speaker placement and what DIY Sub to get for my room. I (meaning my wife) would really like the sub to be under the stairs (front left of the room). I am very handy with wiring and moderate woodworking skills. Need advice on the best way to go about having a hidden sub in this room. Thank you in advance for your advice and help. Area under the stars is 10'2" by 7'11" with the first run hgt of the stairs being 52 3/8" and the second run hgt being 59 7/8". Stairs are 3'11 1/2 wide.
Room 12'x8'x20'2" and the wall by the stairs is 10'2":