Woofer placement near floor-benefits?

I agree in that it depends on the design and how the end product sounds. My Unity Audio Sig 1's had a down facing woofer on the bottom of of the cabinet and the results were excellent. The speaker wasn't bass heavy and the integration was excellent.

Sorry,I can't see your (their)reasoning Bob. Closer to the floor will simply make the floor bounce closer in time to the initial signal. Yes the bass is reinforced - but there is a time delay involved.I prefer to get the initial signal as clean as possible.

You're not thinking this through properly. If the delay is short enough the ear/brain cannot distinguish it from the original sound. The closer the driver is to the floor, the shorter the delay. The higher up the driver, the longer the delay. You won't hear the delay as an echo, but it does effect frequency response. Typically a tall mounted driver will create a frequency response dip right in the middle of the lower midrange. Play around with this calculator to see how it works.

Thanks Onhwy61. Will look into later today.