A loud speaker enclosure is a cabinet designed to transmit sound to the listener via mounted loudspeaker drive components. The major purpose of the loud speaker enclosure is to prevent the out of phase sound waves of the rear of the speaker out of mixing together with the in phase sound waves from the front of the speaker. This ends in interface patterns and cancellation, causing the efficacy of their speakers to become paid down; specially in the low frequencies where the wavelengths are so high that disturbance can change the entire listening area.

Most loudspeaker enclosures utilize some kind of structure, more like a box to comprise the outside of phase sound energy. The box is made of wood or, more recently, plastic, both for the reasons of easy structure and appearance. Loudspeaker cabinets are sometimes sealed and some times ported. Ported cabinets allow a number of the noise energy in the cabinet must be published, and when designed correctly with good awareness to phase relationships, both increase bass response and decrease driver journey.

Many other engineering variations on the basic box design exist, such as acoustic transmission lines. Enclosures always play a substantial role in sound production in addition to the planned design effects, adding unfortunate resonances, diffraction, and other undesirable phenomenons. condenser enclosures with resonance are usually reduced by increasing enclosure density and rigidity, by hightened damping of enclosure walls, or even simply by the addition of absorption internally.

Bass-reflex or vented loudspeaker enclosure

Vented or bass enclosures need special constructions due to the big forces which can be developed by the drivers installed inside the behave on them. Vented loudspeaker enclosures have two primary purposes - that the separation of vibrations from the front and back of their loudspeakers, and the containment of air to ensure that the atmosphere can function as a resonating elastic medium in the enclosure.

Vented enclosure performance is analogous to how a bottle will probably act as a whistle. At a system that is ventilated it's crucial to prevent air escapes, because the port produces most of the noise at the frequency of the pressure in the enclosure could be substantial.

Air leaks in the seams or walls of enclosure can get the pruning of their system to shift in frequency, and producing additional unwanted consequences also. The material used for enclosure walls should be sturdy and dense and should be without any voids or warps. The perfect loudspeaker enclosure could have no wall space in frequencies that fall within the frequency variety of loudspeakers mounted init. 25 mm solid lead plate would make an excellent loudspeaker enclosure.


Woofer and subwoofer enclosures

Electrical filter theory was used with substantial victory for woofer and subwoofer enclosures.