The positioning of speakers (all speakers) that reproduce low frequencies is a room dependant equation. With bookshelf speakers, and floor standing speakers that do not produce much in the way of low frequencies, the positioning near a wall or corner will only tend to enhance frequencies that are lacking anyway, so if this phenomenon is going to happen in your room it will not manifest itself as an imbalance and maybe even an improvement. The rear porting on the M80s is really a bit of a red herring in this equation because it will occur whether the speaker is rear ported or not. Hence if you own speakers that are capable of reproducing low frequencies you may have to move them out from the wall a bit depending on your room acoustics. In my own room I have M80s and it was not necessary to move them out from the wall.

Ports are actually tuned to specific frequencies. Basically the longer the port the lower the frequency but the larger the diameter of the port the longer it needs to be to accomplish the same tuning frequency as a smaller diameter port. Hence by using 3 ports we are able to have the volume of air required for the M80s but do not need to have the very long length that would be required if we used a single port.


Ian Colquhoun
President & Chief Engineer

Ian Colquhoun
President & Chief Engineer