[Mattk11]

I have made the decision to build my own subs for a couple reasons 1) I have heard and read DIY will give me better performance 2) I want a project. My room is 13' wide, 22' deep and 9' tall. It is completely treated with bass traps in the corners and all walls treated as well. The subs sit behind a perforated screen wall on a stage filled with sand.

My current subs are an MX-5000 and Outlaw stacked on top of one another about 1/3 from the right forner of the room. The front two corners have floor to ceiling bass traps. The bass sounds tight but it is just not enough for this room. I really would like to get flat extension down to 15 Hz. I am good to around 20 right now but it falls off steeply below that. I had graphs from when the room was completed but my laptop that I used for testing has since died.

I am really having difficulty deciding what to do. I have narrowed my driver choice to the SS RL-P18 and would like to make two subs. My amp is a Crown CE4000 which can run mono at 4 ohms, 2800w. I also have an SMS-1.

My biggest problem is size, I only have 16" of depth to play with behind my screen wall. I can go as wide as 36" and 48" tall - one on each side of my center channle speaker or I can stack both subs up to 80" tall on one side the the center channel. The SS web site suggest 19 cu ft vented enclosure for 14 Hz tune. I don't know if this is the ideal size since many of the boxes built on this site a HUGE. I have no idea how long to make the port or where to get started. I have seen some of the software available, but I am worried it would take me more time to learn the software than to build the boxes.

I am also worried that if this sub fires forward, it could ripple the screen since it will be 4" from the front of the woofer. I could angle one side of the box or the top of the box so the woofers fire at a 45 degree angle.

Any thought or ideas?

Thanks
Matt