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RE: Adding a tweeter to MMG

Posted by Satie on February 28, 2017 at 08:18:11:
There is no way for damping to make a significant dent in the cavity resonance. It is formed by the physical spacing between the diaphragm and the magnet board. But it has one saving grace in that it does not have a syncronized on axis component. It is entirely random noise on axis so it cancels out as you increase the number of drivers. It is nearly gone at 6 drivers per side and entirely gone at 8 drivers per side. Waveguides can also be used to get cancellation of the cavity resonance peak with fewer drivers. Measurements I saw show it disappearing with 4 driver arrays in an 8" or so waveguide or constant directivity horn.