Thanks To the both of you. The Pf1500 is a very powerful subwoofer that I was pretty impress by some years ago. The indicators that I have read were around 20Hz. This I thought was adequate.

I am going to do some measurements for the LFM-1. I know it can fit in the space where I have the Pf1500 however I do not know if I want that big of a piece of real estate taken up for this sub.

What about hooking up these subs? I have the Outlaw 990/7700.
Can either one of you guys give me a simple starter course without the meters. Can I still attain reasonable results?

Thanks Palmer for the compliment.