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kdm electronics inc.
Description
KDM introduced the "Octasound" Speaker System in 1985. This product is a completely self contained 360º Central Speaker Cluster shaped in the form of an Octagon. This new product design represented a radical departure from the normal approach of constructing a central speaker cluster. Before the introduction of the "Octasound" Central Speaker, it was normal practice to construct a custom frame that secured a variety of manufactured components to form a central speaker cluster.
The new "Octasound" Central Speaker Cluster has greatly improved the available sound quality that was previously capable of being produced. The "Octasound" Central Speaker is an economical "compact" and aesthetically "attractive" design compared to previous "ugly" and "bulky" models.
Between 1985 and the present, KDM has concentrated their efforts to introduce a "family" of "Octasound" Central Speaker Clusters to meet market requirements. The original design was very large, weighed 285 lbs. and was over 36 cubic feet in volume.
At the present time, KDM offers three "Octasound" Central Speaker Clusters. For Indoor use the KDM SP810A, and for Indoor / Outdoor use the KDM SP820A, KDM SP840A plus the KDM SW818A Subwoofer Central Speaker System.
These "Octasound" Central Speaker models weigh between 44 and 75 lbs. and are only 0.75 to 4 cubic feet in volume ...
The new "Octasound" Central Speaker Cluster has greatly improved the available sound quality that was previously capable of being produced. The "Octasound" Central Speaker is an economical "compact" and aesthetically "attractive" design compared to previous "ugly" and "bulky" models.
Between 1985 and the present, KDM has concentrated their efforts to introduce a "family" of "Octasound" Central Speaker Clusters to meet market requirements. The original design was very large, weighed 285 lbs. and was over 36 cubic feet in volume.
At the present time, KDM offers three "Octasound" Central Speaker Clusters. For Indoor use the KDM SP810A, and for Indoor / Outdoor use the KDM SP820A, KDM SP840A plus the KDM SW818A Subwoofer Central Speaker System.
These "Octasound" Central Speaker models weigh between 44 and 75 lbs. and are only 0.75 to 4 cubic feet in volume ...
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Date
Sep 9, 2005
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Link ID
9963
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Barefoot Sound - Recording Monitor Loudspeakers. Barefoot Sound is founded on the ambition to create a new breed of audio monitor. As small and mid-sized project studios became more and more prominent in the early 2000's, Thomas Barefoot began to recognize the need for a speaker that could transcend the need for multiple types of monitors, while still delivering the highest sonic performance available, all without being cost prohibitive.
The result is a monitoring solution that is turning the industry upside down. First with the MiniMain12™, and again with the MicroMain27™, Barefoot Sound is at the forefront of multipurpose monitoring solutions. Our innovative designs use only the finest components, and are built to the highest specifications.
Our speakers do it all. Whether acting as day to day near-fields, or impressing at high volumes while serving as set of mains, Barefoot Sound's monitors are the most versatile in the world.
The result is a monitoring solution that is turning the industry upside down. First with the MiniMain12™, and again with the MicroMain27™, Barefoot Sound is at the forefront of multipurpose monitoring solutions. Our innovative designs use only the finest components, and are built to the highest specifications.
Our speakers do it all. Whether acting as day to day near-fields, or impressing at high volumes while serving as set of mains, Barefoot Sound's monitors are the most versatile in the world.
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Community Professional Loudspeakers has been a leading supplier of professional sound systems since 1968. Headquartered in Chester, Pennsylvania, Community distributes its products worldwide in over fifty countries.
In the mid 1960s music was on the move. The growing "rock revolution," and the need to bring its explosion of new musical styles and messages to audiences around the world, demanded an evolution in the technology of touring sound: lightweight, mobile systems able to reproduce the depth and complexity of the music with absolute impact and clarity. Communication had become the critical factor in live sound.
Bruce Howze, a creatively inclined loudspeaker designer working in Pennsylvania with influential bands such as Jefferson Airplane, was keenly aware that 2-way sound systems based on equipment from movie theaters were no longer viable. These had unacceptable limitations in coverage, clarity, and portability, largely due to their massive size, weight, and the lack of midrange output of their loudspeakers, a result of their limited 2-way design ...
Community, audio, loudspeaker, speaker, driver, compression driver, horn, pro audio, acoustics, sound, sound system, PA, public address, paging, speaker manufacturer, weather resistant loudspeakers, weatherproof speakers, outdoor loudspeakers, outdoor speakers, stadium speakers, boat speakers, cruise ship speakers, sound reinforcement, paging systems, touring sound, installation speakers, subwoofers, DJ equipment, DJ speakers, portable speakers, surface mount speakers, ceiling speakers, rental sound, Ulysses, stage monitors, sound systems, sound equipment, high level paging, all purpose speakers, arena speakers, church speakers, industrial paging system, race track sound system, theme park sound systems, theatre speakers, full range loudspeakers, sound system design, sound system design software, under balcony speakers, DSP, system controller, cluster, R series speakers, Solutions loudspeakers, SLS, OEM sound equipment, Community Professional Loudspeakers, Community Light & Sound, Bruce Howze
In the mid 1960s music was on the move. The growing "rock revolution," and the need to bring its explosion of new musical styles and messages to audiences around the world, demanded an evolution in the technology of touring sound: lightweight, mobile systems able to reproduce the depth and complexity of the music with absolute impact and clarity. Communication had become the critical factor in live sound.
Bruce Howze, a creatively inclined loudspeaker designer working in Pennsylvania with influential bands such as Jefferson Airplane, was keenly aware that 2-way sound systems based on equipment from movie theaters were no longer viable. These had unacceptable limitations in coverage, clarity, and portability, largely due to their massive size, weight, and the lack of midrange output of their loudspeakers, a result of their limited 2-way design ...
Community, audio, loudspeaker, speaker, driver, compression driver, horn, pro audio, acoustics, sound, sound system, PA, public address, paging, speaker manufacturer, weather resistant loudspeakers, weatherproof speakers, outdoor loudspeakers, outdoor speakers, stadium speakers, boat speakers, cruise ship speakers, sound reinforcement, paging systems, touring sound, installation speakers, subwoofers, DJ equipment, DJ speakers, portable speakers, surface mount speakers, ceiling speakers, rental sound, Ulysses, stage monitors, sound systems, sound equipment, high level paging, all purpose speakers, arena speakers, church speakers, industrial paging system, race track sound system, theme park sound systems, theatre speakers, full range loudspeakers, sound system design, sound system design software, under balcony speakers, DSP, system controller, cluster, R series speakers, Solutions loudspeakers, SLS, OEM sound equipment, Community Professional Loudspeakers, Community Light & Sound, Bruce Howze
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3. sls audio
Since the early 1970's, we have been designing, manufacturing, installing, and touring with some of the most innovative loudspeaker systems in the industry. For years, our custom crafted cabinets have been used by some of the biggest names in the business. Now, through continuing development, our loudspeakers have evolved to the highest level of sonic engineering; the perfect union of craftsmanship and technology. Our loudspeakers reproduce any input source with an uncolored accuracy not possible by any others in their category.
The secret of our success, stems from the use of new Ribbon Driver Technology combined with our proprietary horn, woofer, and cabinet designs. With the development of exotic new materials used in the manufacture of our drivers, extreme high outputs are achieved with a fidelity and clarity known only in world class audiophile speaker systems. The ultra-low distortion and extremely fast transient response of our high frequency drivers allows our speakers to produce accurate sound over a wider dynamic range. The result, unprecedented musical detail at high sound levels with much less listener ear fatigue.
Able to achieve extremely high output levels with fast transient response and ultra low distortion, our Pro-Audio loudspeakers are the speakers of choice for professionals around the world. Accurate sound over a wider dynamic range with unprecedented musical detail at high sound levels that's the SLS difference.
The secret of our success, stems from the use of new Ribbon Driver Technology combined with our proprietary horn, woofer, and cabinet designs. With the development of exotic new materials used in the manufacture of our drivers, extreme high outputs are achieved with a fidelity and clarity known only in world class audiophile speaker systems. The ultra-low distortion and extremely fast transient response of our high frequency drivers allows our speakers to produce accurate sound over a wider dynamic range. The result, unprecedented musical detail at high sound levels with much less listener ear fatigue.
Able to achieve extremely high output levels with fast transient response and ultra low distortion, our Pro-Audio loudspeakers are the speakers of choice for professionals around the world. Accurate sound over a wider dynamic range with unprecedented musical detail at high sound levels that's the SLS difference.
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4. Beyma
Since 1970 Acustica Beyma has been researching and developing loudspeakers to guarantee a reliable sound of quality ...
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5. acoustics
At Accucoustics, we are committed to the accurate reproduction of sound. Our name says it all; Accucoustics = accurate acoustics.
The problem most often overlooked with most speaker systems is accurate reproduction of the bottom most octave. With the exception of the recent breed of 1 cubic foot subwoofers using exotic drivers and multi-kilowatt amplifiers equalized to achieve good bass response to the bottom octave from a 1 foot cube, most systems known for their good low frequency response have used:
1) Large sealed or vented cabinets and large woofers
2) Multiple or compound (isobaric) woofer alignments
3) Mass loaded vent substitutes (undriven cones)
4) Accelerometer/servo amplifier based systems
All of the above, including the small brute force cubes are either expensive approaches or produce bass which is limited in output at the lowest frequencies. We at Accucoustics believe that the enclosure itself should be designed to reproduce the lowest frequencies possible for a given cubic volume, without the excessive low frequency rolloff or midbass peak so typical of a number of popular sealed and vented enclosure types. We definately do not believe in using a large amount of EQ to make up for enclosure design inadequacies.
Of all the enclosure types, only the transmission line (TL) offers a - 3 dB point BELOW the free air resonant frequency of the woofer itself. In all other types of enclosures, the volume of the box raises the system resonant frequency ABOVE the woofer's free air resonant frequency. In the case of the typical closed box (acoustic suspension) the internal compliance of the enclosure raises the system resonant frequency to nearly double that of the woofer's free air resonant frequency, below which the response falls off at a rate of 12 dB/octave. With the typical ported enclosure, the system resonant frequency is about 1.4 times that of the woofer's free air resonant frequency, below which it falls off at a rate of 18-24 dB/octave, depending on the size of the port.
In 1968, I acquired a deep interest in and love of the pipe organ. I got my first exposure to the intricacies of such an instrument during that year when a large instrument was being installed in Corbett Auditorium on the campus of the University of Cincinnati.
Between 1974-1982 I got the opportunity to work on a large Wurlitzer theatre pipe organ being installed at Emery Theatre in Cincinnati, OH. Being in electronic engineering, I decided to apply my knowledge of test methods and procedures to perform a four year independent research project on the subject of Flue Pipe Acoustics, the study of the Physics behind the Sound of Organ Pipes and Whistles.
That research culminated in a number of domestic and foreign patents on two entirely new classes of whistles of extremely high efficiency and output, known as toroidal whistles, suitable as replacements for DES warning sirens. That is somewhat of a different story and can be found in my sister website entitled "Flue Pipe Acoustics".
I had spent the next 15+ years searching for loudspeakers which could do justice to the low frequency reproduction requirements for the pipe organ. The bass of most existing woofers and subwoofers have most of their output in the 50 Hz-70 Hz range. It is rare to find any loudspeaker which can maintain its full output to 30 Hz or below with low distortion. This is the type of bass extension I had been searching for in a loudspeaker, but have been unable to find without spending a small fortune.
Within the past several years I decided to apply my findings on my research toward the design of transmission line (TL) loudspeakers of higher efficiency. A TL loudspeaker is basically a pipe coupled to a small chamber behind the woofer. During this time I collaborated with my friend and associate, Todd Birdsong to build some VLR-4 prototypes using a 10" woofer. VLR stands for Very Low Resonance and the suffix stands for the enclosure volume in cubic feet.
The prototypes were awesome on all types of music and reproduced sounds normally only heard during live performances or in high end loudspeakers selling for several thousand dollars a pair. Our business started from this.
Richard Weisenberger .
The problem most often overlooked with most speaker systems is accurate reproduction of the bottom most octave. With the exception of the recent breed of 1 cubic foot subwoofers using exotic drivers and multi-kilowatt amplifiers equalized to achieve good bass response to the bottom octave from a 1 foot cube, most systems known for their good low frequency response have used:
1) Large sealed or vented cabinets and large woofers
2) Multiple or compound (isobaric) woofer alignments
3) Mass loaded vent substitutes (undriven cones)
4) Accelerometer/servo amplifier based systems
All of the above, including the small brute force cubes are either expensive approaches or produce bass which is limited in output at the lowest frequencies. We at Accucoustics believe that the enclosure itself should be designed to reproduce the lowest frequencies possible for a given cubic volume, without the excessive low frequency rolloff or midbass peak so typical of a number of popular sealed and vented enclosure types. We definately do not believe in using a large amount of EQ to make up for enclosure design inadequacies.
Of all the enclosure types, only the transmission line (TL) offers a - 3 dB point BELOW the free air resonant frequency of the woofer itself. In all other types of enclosures, the volume of the box raises the system resonant frequency ABOVE the woofer's free air resonant frequency. In the case of the typical closed box (acoustic suspension) the internal compliance of the enclosure raises the system resonant frequency to nearly double that of the woofer's free air resonant frequency, below which the response falls off at a rate of 12 dB/octave. With the typical ported enclosure, the system resonant frequency is about 1.4 times that of the woofer's free air resonant frequency, below which it falls off at a rate of 18-24 dB/octave, depending on the size of the port.
In 1968, I acquired a deep interest in and love of the pipe organ. I got my first exposure to the intricacies of such an instrument during that year when a large instrument was being installed in Corbett Auditorium on the campus of the University of Cincinnati.
Between 1974-1982 I got the opportunity to work on a large Wurlitzer theatre pipe organ being installed at Emery Theatre in Cincinnati, OH. Being in electronic engineering, I decided to apply my knowledge of test methods and procedures to perform a four year independent research project on the subject of Flue Pipe Acoustics, the study of the Physics behind the Sound of Organ Pipes and Whistles.
That research culminated in a number of domestic and foreign patents on two entirely new classes of whistles of extremely high efficiency and output, known as toroidal whistles, suitable as replacements for DES warning sirens. That is somewhat of a different story and can be found in my sister website entitled "Flue Pipe Acoustics".
I had spent the next 15+ years searching for loudspeakers which could do justice to the low frequency reproduction requirements for the pipe organ. The bass of most existing woofers and subwoofers have most of their output in the 50 Hz-70 Hz range. It is rare to find any loudspeaker which can maintain its full output to 30 Hz or below with low distortion. This is the type of bass extension I had been searching for in a loudspeaker, but have been unable to find without spending a small fortune.
Within the past several years I decided to apply my findings on my research toward the design of transmission line (TL) loudspeakers of higher efficiency. A TL loudspeaker is basically a pipe coupled to a small chamber behind the woofer. During this time I collaborated with my friend and associate, Todd Birdsong to build some VLR-4 prototypes using a 10" woofer. VLR stands for Very Low Resonance and the suffix stands for the enclosure volume in cubic feet.
The prototypes were awesome on all types of music and reproduced sounds normally only heard during live performances or in high end loudspeakers selling for several thousand dollars a pair. Our business started from this.
Richard Weisenberger .
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