[Otto]

Hi Rich and welcome to the Shack!

In general, your measurement looks like you have things set up properly. Did you use the cal file for your meter, and did you get the loopback test to work (the loopback test will generate your soundcard cal). If you got that stuff working, I think you have a real measurement there!

Now, you're right about it not looking so hot. The first thing I might suggest is turning off your mains for the measurement; it looks like they are still on since the measurement is running up to and beyond 200 Hz. Let's see how those subs look without the mains in the way.

Once you get a measurement of that, I'd probably suggest moving your subs around. I would probably start by simply stacking them together, one on top of the other. I would not confine them strictly to the corner; feel free to move them out somewhat. I'd also experiment with different corners, but since your room appears to be rather rectangular, you might not notice much difference.

Anyway, there are a few suggestions that will keep you busy for a bit. Let's see what comes out of those and go from there.

Have fun.

EDIT: brucek beat me to it!