[gary thomas]

Thanks Bruce. The reason I asked about the other speakers is that I'm getting an upward trend on SPL between 80 & 100...I'm thinking that it may be caused when my mains (crossover @ 80) and center/surrounds (crossover at 100) kick in.

I initially had both subs stacked in the corner when I added the DIY sub & output become a non-issue. The levels were great in the center room listening area & at my main listening area, but the couch seats along the wall were blown away. Separating the subs gave me a tighter response when averaging my three main listening areas. (I also tried 1 of the subs along a side wall, but things got worse)

I had a BFD at one time, but sold it. My goal is to get a good average response in all three listening positions by deteriming ideal position.

The picture shows the stacked position...I now have 1 located behind & outside each main speaker. I plan to experiment by placing them behind & inside the mains...or 1 inside & 1 outside the mains. If possible, I'd like to keep them on the stage.

After finding this great forum...and reading about subwoofer calibration, I'm wondering if using the Rat Shack w/ correction values is even worth it. I wanted to make sure I'm taking the proper measurements. I'm considering jumping in w/ REW...mostly because I get bored without a home theater project!