A structure that surrounds and supports loudspeaker drivers, providing a surface from which sound radiates into a listening space. Some may discount the baffle as simply being the front of the speaker upon which drivers are mounted, however its purpose is varied and it can significantly impact the overall performance of a loudspeaker:
- First, the baffle should be as rigid as possible to provide mechanical support for each driver installed and minimize unwanted vibrations or resonances.
- Second, the size, shape, and material properties of the baffle will impact overall on- and off-axis frequency response by interacting with the sound waves generated by each loudspeaker driver, and can influence factors such as low-frequency extension, dispersion, and directivity.
- Third, the edges and corners of the baffle can cause diffraction effects, resulting in changes to sound as it interacts with these boundaries. The shape of the baffle can help control and minimize these effects.
- Fourth, integration with the rest of the cabinet influences structural integrity and rigidity of the cabinet, helping reduce vibrations and resonances.
- Fifth, the baffle separates the front and back waveforms generated by loudspeaker drivers and can minimize or prevent interference and cancellation of the back wave on the front wave.
- Finally, aesthetic considerations should not be ignored, as the front of the speaker will be what most people see.
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