Hey Bo,

I also prefer a "flat" sound. For me, the accurate reproduction of sound is most important. I don't like any passband overemphasized.

Good points on phase. I hadn't considered running my subs 180 degrees out of phase.

It might be a while before you hear from me a again. I'll be busy positioning speakers, cutting cables and taking measurements. But, I will be back to post results. Thank you for your help and guidance!

I also captured some high-resolution RTA readings. There were some questions around slope. For completion, here are the new readings. The higher resolution exposes more ringing, but at least the slopes look steeper...

10Hz - 80Hz:



80Hz - 800Hz:



800Hz - 8kHz:



8kHz+:




-Brian