Saturn,
I love the Magnepan sound, but I can't resist correcting you here:
In reply to:
Although out of phase from the back...by the time it deflects of your back wall and other things it will cancel out/absorbed out of phase signal or will be in-phase by the time it reaches your ear. Someone correct me if I am wrong with this assumption.
This is entirely dependent upon the distance from the back wall and the frequency of the sound. For example, in order for the sound emanating from both the front and the back of the speaker to arrive at your ear in-phase, the distance of the speaker from the back wall needs to be 1/4 of the wavelength of the sound. (To find the wavelength of a tone, divide 1130 by the Hz value of the tone. The result is distance in feet.)
Because the speaker must reproduce a wide range of sounds (on average from say 40 Hz to 20 kHz), you cannot place it at an ideal distance for all frequencies. Every distance that exactly reinforces a particular Hz value will exactly cancel out a value with half the wavelength (i.e. double the hertz).
