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In general, soft grilles impose little resistance on the speaker driver because the material is free to move synchronously with the sound waves. Because the grille is capable of absorbing this vibration, softer grilles are (in general) less prone to rattling except at extremely high sound pressure levels .
A speaker driver mounted on a finite baffle will display a physical phenomenon known as interference, which can result in perceivable frequency-dependent sound attenuation. This phenomenon is particularly noticeable at low frequencies where the wavelengths are large enough that interference will affect the entire listening area.
Manufacturer's leaflets advise positioning of the speaker close to a rear wall and approximately 2 to 3 feet (60 to 90 cm) from corners. [4] [7] The trade-off is the less than solid stereo image. [1] Linn declared forthrightly that loudspeakers that were not designed to work tight against a wall were without merit.
Bass reflex enclosure schematic (cross-section). RCA bass reflex shelf stereo speakers.. A bass reflex system (also known as a ported, vented box or reflex port) is a type of loudspeaker enclosure that uses a port (hole) or vent cut into the cabinet and a section of tubing or pipe affixed to the port.
Some of the speaker cabinets referred to as dipolar arrange the two poles at an angle of about 90 degrees rather than 180 degrees, especially for wall-mounted rear speakers (e.g. Jamo C-80-SUR, [1] Castle dipoles, [2] and Theophany [3] S4).
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A speaker array mounted in the rafters in a camp sports facility. Systems for sports facilities often have to deal with substantial echo, which can make speech unintelligible. Sports and recreational sound systems often face environmental challenges as well, such as the need for weather-proof outdoor speakers in outdoor stadiums and humidity ...
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