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  2. Acoustic suspension - Wikipedia

    en.wikipedia.org/wiki/Acoustic_suspension

    The ported cabinet demonstrates increased bass output in the 50–100 Hz range. On the right is a simulation of the low-frequency response of a typical 5" mid-woofer, the FaitalPRO 5FE120 [8] mid-woofer generated, obtained using WinISD, [9] for ideal sealed (yellow) and ported (cyan) enclosure configurations. The ported version adds about an ...

  3. Transmission line loudspeaker - Wikipedia

    en.wikipedia.org/wiki/Transmission_line_loudspeaker

    The advantage of this approach is that the air pressure loading the main driver is maintained which controls the driver over a wide frequency range and reduces distortion. [The TL design] also produces higher SPL [sensitivity or loudness] and lower bass extension than ported or sealed box of similar size.

  4. Acoustic transmission line - Wikipedia

    en.wikipedia.org/wiki/Acoustic_transmission_line

    In 1965, A R Bailey's article in Wireless World, “A Non-resonant Loudspeaker Enclosure Design”, [4] detailed a working Transmission Line, which was commercialized by John Wright and partners under the brand name IMF and later TDL, and were sold by audiophile Irving M. "Bud" Fried in the United States.

  5. Loudspeaker enclosure - Wikipedia

    en.wikipedia.org/wiki/Loudspeaker_enclosure

    This design falls between acoustic suspension and bass reflex enclosures. It can be thought of as either a leaky sealed box or a ported box with large amounts of port damping. By setting up a port, and then blocking it precisely with sufficiently tightly packed fiber filling, it is possible to adjust the damping in the port as desired.

  6. Bass reflex - Wikipedia

    en.wikipedia.org/wiki/Bass_reflex

    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.

  7. Passive radiator (speaker) - Wikipedia

    en.wikipedia.org/wiki/Passive_radiator_(speaker)

    In the same way as a ported loudspeaker, a passive radiator system uses the sound pressure otherwise trapped in the enclosure to excite a resonance that makes it easier for the speaker system to create the deepest pitches (e.g., basslines). The passive radiator resonates at a frequency determined by its mass and the springiness (compliance) of ...

  8. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    Air conditioning, often abbreviated as A/C (US) or air con (UK), [1] is the process of removing heat from an enclosed space to achieve a more comfortable interior temperature (sometimes referred to as 'comfort cooling') and in some cases also strictly controlling the humidity of internal air.

  9. Isobaric loudspeaker - Wikipedia

    en.wikipedia.org/wiki/Isobaric_loudspeaker

    Isobaric loudspeaker in a cone-to-magnet (in-phase) arrangement. The image above shows a sealed enclosure; vented enclosures may also use the isobaric scheme. Two identical loudspeakers are coupled to work together as one unit: they are mounted one behind the other in a casing to define a sealed chamber of air in between them. The volume of ...

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