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With any multi-way loudspeaker system for maximum accuracy and listening pleasure it’s very
important to have the different frequency bands synchronised in time. At the crossover frequency it is
even more critical where more than one speaker is reproducing the same frequency range. Bad
timing can give a hole in the frequency response due to energy cancellation (out of phase) or good
timing can give mutual reinforcement and a seamless join between the mid bass and low mid
frequencies (in phase) as illustrated in the following diagrams.
9
9.1 Position tuning
As moving the loudspeakers closer to or further away from the listener also changes their arrival time
it is possible to synchronise them by moving either the bass speaker or the satellites backward or
forward with respect to the listener. To accommodate the fact that this positioning may not always be physically
possible we have included a polarity reverse (180 degrees out of phase) switch
on the input panel to help facilitate this optimisation.
The energy peaks are aligned resulting in summation
The energy peaks are opposing resulting in cancellation
TIMING OPTIMISATION
