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Topic: Loudspeaker enclosure

    Note: these results are not from the primary (high quality) database.

Loudspeaker construction The red curve was the first test, where the inside of the large enclosure was empty (except for the old loudspeaker), and the top was 3/4" MDF. My epiphany regarding loudspeaker construction happened one evening when I was listening to music loud enough to shake the walls, floor, and everything else in the room. A tutorial which discusses damping of panel vibrations and the importance of enclosure sound absorption is provided at www.silcom.com /~aludwig/Loudspeaker_construction.html   (2789 words)

Introduction to Loudspeaker Design, by John L. Murphy The book covers such topics as loudspeaker design tradeoffs, spatial loading, diffraction loss, cavity effect and enclosure construction. The appendices contain technical references, design aids and a chart depicting 18 different loudspeaker enclosure types. Introduction to Loudspeaker Design is written for hobbyists, students, technicians and engineers seeking an overview of the technology of loudspeakers. www.trueaudio.com /ild_abt1.htm   (207 words)

Loudspeaker - Wikipedia, the free encyclopedia A loudspeaker is commonly mounted in an enclosure (or cabinet). One problem with loudspeakers is that the essentially-planar form of most loudspeakers creates a soundwave that is somewhat directional, that is, the intensity of the sound produced varies depending on the listener's angle relative to the central axis of the speaker. The sensitivity is often defined as dB/(W·m)—decibels output for an input of one nominal watt measured at one metre from the loudspeaker and on-axis or directly in front of it, given that the loudspeaker is radiating int an infinitely large space and mounted on an infinite baffle. en.wikipedia.org /wiki/Loudspeaker   (5930 words)

Loudspeakers Modern loudspeaker enclosures typically involve multiple loudspeakers with a crossover network to provide a more nearly uniform frequency response across the audio frequency range. Even with a good enclosure, a single loudspeaker cannot be expected to deliver optimally balanced sound over the full audible sound spectrum. The loudspeakers are almost always the limiting element on the fidelity of a reproduced sound in either home or theater. hyperphysics.phy-astr.gsu.edu /hbase/audio/spk.html#c1   (621 words)

TA Speaker Topics: Loudspeaker Design Tradeoffs To get some perspective on the matter, let's start with an exaggerated example of what we cannot do with a loudspeaker: we can't make a speaker that goes very low, is highly efficient, and uses a tiny enclosure. The loudspeaker analysis developed by Thiele and Small (so called, "Australian Loudspeaker Theory" because both of these men were from Australia) shows that there is a definite relationship between low frequency bandwidth, efficiency, and box size. If a designer understands those limits he will be in a better position to "fit" a particular speaker design to the application at hand. www.trueaudio.com /st_trade.htm   (820 words)

Encyclopedia topic: Loudspeaker A loudspeaker is commonly mounted in an enclosure (or cabinet). An 'open baffle' loudspeaker is an approximation to this - the transducer is mounted on a simple board of size comparable to the lowest wavelength (The distance (measured in the direction of propagation) between two points in the same phase in consecutive cycles of a wave) to be reproduced. Flat panel loudspeaker designs also lend themselves to being electrostatically driven rather than via the usual electromechanical voice coil, thereby giving a more linear response; the disadvantage, however, is that the signal must be converted to a very high voltage low current, which can be problematic for reliability and maintenance. www.absoluteastronomy.com /encyclopedia/l/lo/loudspeaker.htm   (3916 words)

Martin Logan Prodigy Electrostatic Loudspeakers reviewed on AudioRevolution.com The upper two-thirds of the loudspeaker consists of a thin transparent perforated panel, with the bottom portion of the loudspeaker containing the low-frequency enclosure. Because of this particular issue, Martin Logan has developed a hybrid electrostatic loudspeaker that utilizes a traditional electromagnetic driver, which is crossed over at lower frequencies, in the case of the Prodigy at 250 Hz. For years Martin Logan has produced electrostatic loudspeakers that have been considered by many to be at the top of their respective classes. www.avrev.com /equip/martinloganprodigy   (2271 words)

U.S. Patent No. 3,992,585 - 11/16/1976 - Turner, Jacob C., et al - Self-energizing Electrostatic Loudspeaker System - AudioAnnals.Com In an electrostatic loudspeaker system, the high voltage power supply is typically mounted within the speaker enclosure and is powered by house current which is obtained by plugging the system into an electrical outlet. When large electrostatic drivers are used in a loudspeaker system to reproduce the lower audio frequencies, significantly larger amounts of power must be generated by the high voltage power supply. The high voltage power supply of the present invention is embodied in a four-way electrostatic loudspeaker system which includes a bass electrostatic driver 1, a mid bass electrostatic driver 2, a treble electrostatic driver 3, and a tweeter electrostatic driver 4. www.audioannals.com /03992585-Turner-etal.htm   (3421 words)

Usher X-708 A Top Notch, Entry Level Loudspeaker Review By Scott Faller On the back of the enclosure you will find two pairs of what appear to be WBT midline binding posts for bi-wiring or bi-amplifying and a heavy gauge, gold plated jumper. The main enclosures are manufactured out of 0.75-inch MDF and have a mat silver finish. The driver compliment is a 7 inch long throw woofer with a phase plug and a 1 inch fabric dome tweeter. www.enjoythemusic.com /magazine/equipment/0904/usherx708.htm   (3421 words)

Loudspeaker - Wikipedia, the free encyclopedia A loudspeaker is commonly mounted in an enclosure (or cabinet). One problem with loudspeakers is that the essentially-planar form of most loudspeakers creates a soundwave that is somewhat directional, that is, the intensity of the sound produced varies depending on the listener's angle relative to the central axis of the speaker. Large horn loudspeakers that used to be used in cinemas, were very efficient by today's hi-fi speaker standards. en.wikipedia.org /wiki/Loudspeaker   (4983 words)

Linkwitz Lab - Loudspeaker Design To further your understanding of loudspeakers you might read a ground breaking "Loudspeaker System Design" article, which was published 1978 in Wireless World magazine, and review the many considerations that enter into speaker design. It is an open-baffle loudspeaker of the highest sonic accuracy and refinement. It describes a three-enclosure design with active delay and crossovers using drivers that were highly regarded at the time, KEF T27, B110 and B139. www.linkwitzlab.com   (1103 words)

speaker2.htm Even in the newer electrostatic loudspeakers, a thin electrically-conducting membrane is used which moves back and forth in a modulated electrostatic field. It has long been recognized in the loudspeaker art that the mass of the moving diaphragm introduces "inertial distortion." The cone or diaphragm overshoots and does not follow the input electrical signal faithfully. Sound waves were generated by the thermal expansion and contraction of a modulated RF arc which was maintained within a thimble-like enclosure. www.soteria.com /hydro/speaker2.htm   (1145 words)

AVguide.com: Exclusive: CES Report 2005 The Acapella Audio Arts Violin 2001—High Version ($42,00) is a three-way loudspeaker from Germany that couples a circular horn midrange, a plasma ion tweeter, and dynamic woofers in a striking-looking enclosure. Indeed, it is their sensational dynamic range—the best I think I’ve ever heard in a loudspeaker, including horns—coupled with their superb bass and disappearing-act soundstaging that makes the MBL 101e’s so realistic, especially on rock ’n’ roll. I’d never heard these speakers before (or if I had, I hadn’t heard them to such advantage), but this time around—powered by Germany’s Einstein MK600T2 amplifier ($25,250) and “The Tube” preamp ($13,800)—they were (along with the $7500 horn-loaded-Lowther-driven Rethm loudspeaker) one of the surprises of CES. www.avguide.com /inthenews/CES_2005/speakers_above_10k.jsp   (861 words)

sb85.txt X 8518 Microphones and stands therefor; loudspeakers, whether or not mounted in their enclosures; headphones and earphones, whether or not combined with a microphone, and sets consisting of a microphone and one or more loudspeakers; audio-frequency electric amplifiers; electric sound amplifier sets; parts thereof: 8518100000 Microphones and stands therefor. X Loudspeakers, whether or not mounted in their enclosures: 8518210000 Single loudspeakers, mounted in their enclosures No. 8518220000 Multiple loudspeakers, mounted in the same enclosure No. 8518290000 Other. Subheadings 8519.92 and 8527.12 cover only cassette players with built-in amplifier, without built-in loudspeaker, capable of operating without an external source of electric power and the dimensions of which do not exceed 170 mm x 100 mm x 45 mm. www.census.gov /foreign-trade/schedules/b/2002/sb85.txt   (6702 words)

Loudspeakers Even with a good enclosure, a single loudspeaker cannot be expected to deliver optimally balanced sound over the full audible sound spectrum. The production of a good high-fidelity loudspeaker requires that the speakers be enclosed because of a number of basic properties of loudspeakers. Part of the role of a good enclosure is to minimize the impact of this resonant frequency. hyperphysics.phy-astr.gsu.edu /hbase/audio/spk.html#c1   (621 words)

Sweetwater.com Store Search studio MonitoringStu The Genelec 1032A is a two-way active monitoring system including loudspeaker drivers, speaker enclosure, multiple power amplifiers and active low-level crossovers, and let's not forget that legendary Genelec sound. The Genelec 1037C is a three-way active monitoring system including loudspeaker drivers, speaker enclosure, multiple power amplifiers and active, low signal level crossovers. Genelec's 8050A is capable of producing peak SPL of over 120dB per pair and has a low frequency response extending down to 35Hz. www.sweetwater.com /store/search.php?s=studio+MonitoringStu&m=Genelec   (621 words)

[No title] The appendices contain technical references, design aids and a chart depicting 18 different loudspeaker enclosure types. The book covers such topics as loudspeaker design tradeoffs, spatial loading, diffraction loss, cavity effect and enclosure construction. A complete chapter is devoted to the subject of crossover design. www.trueaudio.com   (621 words)

Avalon Acoustics Eidolon review These questions are particularly appropriate to the Eidolon; as we'll see, this loudspeaker has a unique ability to reach deep down to the core of musical expression in a way that makes music listening a deeper and more gratifying experience. Another difference is that the Eidolon is a non-sealed enclosure. The Eidolon is a three-way system in a non-sealed enclosure. www.avalonacoustics.com /revu-fi-eid.html   (4037 words)

Patent 4310731: Thermal motion transducer The thermal motion transducer of claim 2 further comprising an enclosure having an aperture, said wire being disposed within said enclosure. The thermal motion wire is physically anchored between the enclosure and the movable switching arm and is electrically connected across the source of driving signals. To provide increased motion of the diaphragm, and hence a more powerful loudspeaker, mechanical advantage means may be used with the system described above. www.freepatentsonline.com /4310731.html   (4037 words)

Quarter Wavelength Loudspeaker Design The most common example of a loudspeaker that relies on a quarter wavelength acoustic standing wave is a transmission line enclosure. However, for a long time the lack of a proven mathematical model prevented me from actually pursuing and building this style of loudspeaker enclosure. This flexibility has allowed me to extend the original transmission line models to simulate a wide variety of enclosure styles. www.quarter-wave.com   (4037 words)

DictM5.html ] The use of an enclosure made of a high-permeability magnetic material to prevent a static magnetic field outside the enclosure from reaching objects inside it, or to confine a magnetic field within the enclosure. ] Loudspeaker in which the mechanical forces result from the deformation of a material having magnetostrictive properties. ] A delay line made of nickel or other magnetostrictive material, in which the amount of delay is determined by a shock wave traveling through the length of the line at the speed of sound. www.accessscience.com /Dictionary/M/M5/DictM5.html   (2561 words)

Quarter Wavelength Loudspeaker Design The most common example of a loudspeaker that relies on a quarter wavelength acoustic standing wave is a transmission line enclosure. However, for a long time the lack of a proven mathematical model prevented me from actually pursuing and building this style of loudspeaker enclosure. This flexibility has allowed me to extend the original transmission line models to simulate a wide variety of enclosure styles. www.quarter-wave.com   (714 words)

Stereophile: Sonus Faber Stradivari Homage loudspeaker When Sonus Faber's Franco Serblin began creating his Homage series of loudspeakers (footnote 1) to honor the great violin makers of Cremona—Amati, Guarneri, Stradivari—his design inspiration curiously turned out to be not the violin but the lute. The rear-ported woofers are tuned using the entire internal volume of the enclosure, while the tweeter and the ported midrange unit are contained in a substantially braced, cardioid (heart-shaped) subenclosure, compression-held in place by the main enclosure walls. The main enclosure is constructed using a wood laminate, with constrictive damping inserts in between additional front-panel layers of laminate, in the style of the Amati Homage, which was built of stacks of solid maple. www.stereophile.com /loudspeakerreviews/105sonus   (1078 words)

The DIY Audio Corner The Audio Glossary is a compilation of frequently used audio terms, with an emphasis on the different loudspeaker enclosure designs available for the DIY loudspeaker builder. is a place to post your questions and answers concerning Loudspeaker and Subwoofer design, Car Audio, or anything else audio related. Audio Articles and Technical has interesting articles written by electricians, engineers, and hobbyists just like yourself, as well as links to online audio resources and magazines. diyaudiocorner.tripod.com   (499 words)

v1n4may95.txt The delay through the control source was a function of the loudspeaker and the characteristics of the acoustic enclosure for the loudspeaker which was specially designed to produce a maximum output in the 31.5 Hz octave band. The loudspeaker was incapable of sufficient output for control at this frequency with the result that the controller became unstable. The controller was essentially a double integrator with a very low cut-off frequency of 0.01 Hz transforming the input acceleration to a control voltage driving the servo-cylinder in such a way as to generate piston rod movement opposite to the simulated chassis vertical excitation. www.auburn.edu /isvd/v1n4may95.txt   (6564 words)

v1n4may95.txt The delay through the control source was a function of the loudspeaker and the characteristics of the acoustic enclosure for the loudspeaker which was specially designed to produce a maximum output in the 31.5 Hz octave band. The loudspeaker was incapable of sufficient output for control at this frequency with the result that the controller became unstable. The controller was essentially a double integrator with a very low cut-off frequency of 0.01 Hz transforming the input acceleration to a control voltage driving the servo-cylinder in such a way as to generate piston rod movement opposite to the simulated chassis vertical excitation. www.auburn.edu /isvd/v1n4may95.txt   (6564 words)

Hifi Choice - Review Indeed, the Credo owes a considerable design debt to the longstanding, ongoing and much more expensive SBL: both its main driver, and the design approach which houses the vibration-creating main driver in its own enclosure, have been 'borrowed' from the SBL. Unlike the SBL, Credo mounts this smaller box directly on top of a larger floorstanding enclosure, which expands the total enclosure volume considerably, and also accommodates the tweeter. The Credo is an interesting, entertaining and very involving loudspeaker, following a now well-established Naim speaker tradition by giving greater precedence to mechanical considerations than acoustic behaviour. www.hifichoice.co.uk /archive/perl/466_printreview.htm   (564 words)

ESP Innovations - GRP (Glass Reinforced Plastic) mouldings. This loudspeaker enclosure is a dodecahedron (12 faces), produced from two GRP castings. The Loudspeaker is used with test equipment for evaluating room acoustics. Twelve of these computer bases were made for use at the National Portrait Gallery as a direct replacement for the standard swivel bases. freespace.virgin.net /j.markham/grpmouldings.html   (80 words)

Doctor ProAudio Bookstore In addition, there is update coverage of sound system design and installation, hard-to-find details on loudspeaker and enclosure design, and coverage of typical audio circuitry. This preparation guide for the advanced level NICET certification exam covers intermediate audio calculations and acoustics, codes and standards, circuits and grounding, systems components, loudspeaker systems, troubleshooting and testing, systems design, systems equalization and alignment, and project management. The new book by Pro Sound News senior editor Clive Young, profiles more than 70 of the world's most successful live sound engineers as they teach readers the technical, practical, and political aspects of the job, from customizing mixing approaches and choosing the right equipment, to working with artists and other engineers. www.doctorproaudio.com /doctor/bookstore.htm   (2617 words)

Beststuff - Quick Look: B&W Signature 805 The Nautilus 805 is perhaps the loudspeaker that fills the broadest consumer range since the 800 Series’ initial introduction. The Signature 805 incorporates three major categories of advancements: (1) new drivers, (2) improved crossover componentry and, (3) a new enclosure; not to mention beautiful new “signature” exterior finishes. To mark the British firm’s thirty-fifth anniversary, B&W unveiled its ‘Signature’ 800 Series of Nautilus loudspeaker models, the flagships of the 800 family. www.beststuff.com /articles/4220   (2617 words)

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