Tom, the point Randy makes is a valid one. Simply having multiple sources playing bass frequencies in no way guarantees smoother response. The contrary is the result when the sources are separated by about a half-wavelength, resulting in a null, or about a quarter-wavelength, resulting in a peak. The bass smoothing effect discussed by Dr. Toole, among others, and in the Harman papers requires placement of multiple subs at specific locations(not practical for the speakers)to obtain the desired benefit.
