Hi everyone.I have a stereo 3 way tri amplified system. My woofers are k145 (40hz almost low end limit). I would like to have an equal efficient sub for music and cinema. I was thinking like a sub18 but really too expensive!.Thinking of a 2269h or variant, make a box and add a good plate amp for minimum floor space.My listening room is about 12x26 feet with cathedral ceiling ending at almost 14 feet to 9 feetThanks for your suggestions