Originally Posted by padgman1
For those of you who have had experience with multiple bookshelf-type speakers, what qualities attracted you to 2-way speakers or 3 -way speakers or vertical MTM speakers? Or does the generic statement " It doesn't matter what type of speaker design it is as long as it is competent and achieves what I want in a speaker" apply?
Are there any specific qualities that a specific design above has over the rest?
3 ways in general offer better uniformity of dispersion than 2 ways. The angle of a driver's radiation pattern grows smaller as frequency increases, because the wavelengths grow progressively shorter in relation to the driver radiating area. To counter that effect you use a smaller driver as you go higher in frequency; that's why tweeters are smaller than midranges, which are smaller than woofers. The more driver sizes employed the more uniform the dispersion, at the expense of added complexity and cost.
MTMs have a tight vertical radiation pattern, putting more sound towards the listening area and less towards the floor and ceiling. An MTM using six inch drivers will have about the same radiation pattern in the vertical plane as a fifteen inch driver, due to the space taken up between them by the tweeter, but in the horizontal plane they have twice the angle of dispersion of a twelve inch driver. Using two midbasses rather than one also realizes a 6dB increase in sensitivity, which in a well engineered design can be used to compensate for the 6dB sensitivity loss caused by the baffle step.