CA2469288A1 - Sonotube full range loudspeaker acoustical reproducer - Google Patents
Sonotube full range loudspeaker acoustical reproducer Download PDFInfo
- Publication number
- CA2469288A1 CA2469288A1 CA 2469288 CA2469288A CA2469288A1 CA 2469288 A1 CA2469288 A1 CA 2469288A1 CA 2469288 CA2469288 CA 2469288 CA 2469288 A CA2469288 A CA 2469288A CA 2469288 A1 CA2469288 A1 CA 2469288A1
- Authority
- CA
- Canada
- Prior art keywords
- tube
- woofer
- sonotube
- loudspeaker enclosure
- acoustical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000000463 material Substances 0.000 abstract description 8
- 239000011094 fiberboard Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 239000011120 plywood Substances 0.000 abstract description 2
- 238000013022 venting Methods 0.000 abstract description 2
- 239000004568 cement Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229920000271 Kevlar® Polymers 0.000 description 1
- 235000002779 Morchella esculenta Nutrition 0.000 description 1
- 240000002769 Morchella esculenta Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
- H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
- H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2884—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure
- H04R1/2888—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure for loudspeaker transducers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
In an acoustical loudspeaker enclosure using cones and/or dome drivers, it is known to be made of sheeting material such as MDF (medium density fiberboard), particle board and plywood composites resulting in boxy cabinets of various dimensions.
In this invention, a SONOTUBE (or other name brand) cement containment tube replaces the box cabinet and becomes the main enclosure, the end cap containing the woofer (low frequency driver) being made of sheet material, and a round gable vent capping the other end and serving as venting for the woofer acoustical back wave.
In this invention, a SONOTUBE (or other name brand) cement containment tube replaces the box cabinet and becomes the main enclosure, the end cap containing the woofer (low frequency driver) being made of sheet material, and a round gable vent capping the other end and serving as venting for the woofer acoustical back wave.
Description
B~N~'~1H~IF» ~~N~~ ~~E~'fl~~ L.~~I~~PFF~t. I'I~~EI
In an acoustical Loudspeaker reproducer using cone and dome drivers, it is known that an enclosure znu~ be built in order to mount these drivers; this enclosure also=
serves. to prevent the. cancellation of the Lover frequency acoustical. waves..
In this invention, a commercially available concrete container known as a. SONO-TUBE or. SONUCRET'E or ~UICI~:CRETE Tube ;is used. as an enclosure.
It replaces. particle. board,1~DF (medium density fiberboard), plywood, and other materials, the majority of these materials being manufactured panels of 4.' x 8' sheeting and other si.~s.
The disadvantages of these conventional materials are numerous and include high costs, heavy weight, leftover waste materials, high equipment cost for manufacturing purposes, and the inherent tendency of a Ilat panel to resonate and thus introduce audible distortion products to the sound of the audio reproducer.
Figure 1 shows a frontal elevation of the reproducer and figure la shows low frequency location, 1 b shows midrange driver and 1 c shows tweeter .
Figure 2 is a top view of the embodiment and clearly shows the Lower frequency driver mounting, the low frequency driver being mounted on the upward end cap to the tube.
Figure 3 is a section of the Line Z-Z of Figure l and it shows the midrange or tweeter driver ted fln-the frontal curved surface of the :tube. T-his-crciss-sect view shows the compressible mounting material and/or shaped mountings needed to mount a flat driver to.a radius su~a~ce.
Figure 4 shows an exploded view of the end caps made with IvIDF. These can be .plainly made or embellished depending on the appearance desired.
Figure 5 shows details of the top end cap including the protective grill details and venting details for the transmission Line enclosure.
Figure G shows the acoustical wave propagation pattern from a top view and/or ceiling view looking down to the embodiment.
Figure 7 shows the sound wave patterns of a frontal view of the embodiment, with the Low frequency driver waves hitting the ceiling. Not shown are the reflected waves for claxity.
Figure 8 shows a bipolar version of the enclosure and seen are the Low frequency acoustical waves directed towards the ceiling and the floor. The mid and high frequencies driver shown point to the listener. The backwards pointed midrange and tw~ter drivers are not visible but direct their sound towards the back wall of the listening room, and the sound is reflected towards the listener.
In building this invention, the costs are lower, the building time is reduced, the enclosure is much lighter, and material usage is minimal. Numerous finishes for the enclosure can be applied especially the pre-glued vinyl simulated finishes in woodgrain, marbled, solid colours and the new metal finishes.
In testing this enclosure, the sound has been exceptional when compared to traditional enclosures since the tube is inherently strong and thus acoustically transparent and enclosure resonance is minimal as compared to traditional approaches.
Diffraction edge effects are minuscule. Custom heights of tubes can be made available for higher ceiling heights. A formula of 66% of the room height ensures pleasing acoustical performance.
Wall mounting is utilized in the bipolar models, increasing apparent floor space , the enclosures hung midway with same distance to floor and ceiling. These may be wired for a small room (wire for surround channels to increase apparent size and space) and for a large room (ware for sound reinforcement of the main channels).
In the first installation a 5.1 configuration is adequate and these large enclosures do not require a subwoofer addition. A center channel speaker is optional and not required.
In the latter installation a sound reinforcement approach works well to supplement the main sound and a sense of space will be provided adequately by the room size.
Unfavourable listening results were found when listening to these loudspeakers in a mom with a complex ceiling, (e.g. unf nished basement ceiling.). Since the low frequency driver fires its acoustical waves upward and uses the ceiling as a .reflective surface, rafters and/or floor foists on the ceiling surface of the listening room act as a lower frequency sound trap for the upward Erring woofer.
I have searched the Internet, numerous publications and the patent office websites in Canada and the U.S. for a similar product and have found none.
Key Words used: Tubular or Tubelike loudspeaker, Cylindrical loudspeaker, Sonotube loudspeaker.
I am aware that numerous companies manufacture subwo~~fer enclosures (e.g:
www.svsubwoofers.com) and many individuals have built subwoofers using these SONOTUBES (e.g. Search Sonotube loudspeakers) but I have not found these tubes utilized as FULL RANGE ACOUSTICAL LOUDSPEAKER REPRODUCERS in the manner presented in the above claim.
Specifications of prototype built by inventor are as follows:
16 inch. by 64 inches Sonotube ( 2 of these used for stereo anddor bipolar use) end caps of 9/16 " MDF sheet material (both an inner and an outer cap were used) 12 inch Dynaudio 30W54 high excursion low frequency d~~iver ( 2 for stereo) 2 of 13m/8636 Scan Speak Kevlar midranges for midrange frequencies 2 of D28 Dynaudio tweeters 3 way Philips/Deforest crossover at 450HZ/3S00HZ points 1 inch of polyfili batting for damping the inside of enclosures 45.5 square inch duraflo vinyl vent per enclosure 2.5 rolls of Contact Brand vinyl adhesive to finish the exterior of the tubes These were powered by a 260 watts per channel Yamaha power a~np and preamp combo.
References include IrEF TL80 transmission line International Reference Standard Monitors, Panasonic SA HT-900 system and a $17000 system of 750 watts per channel incorporating 5 power amplifiers, I mixer and 1 electronic crossover powering custom corner horn loaded bass bins with 18" Beyma low frequency drivers and 2 of 1270-~35 titanium drivers with 2380 Megga Sound Horns supplemented by SF18 tweeter combo by Megga Sound. Front and rear surround equipment information is omitted for clarity.
Sonotube full range acoustical loudspeaker reproducer offer the dynamics of the reference horn system with the accuracy and analytical details of the REF reference system. It is efficient with the proper drivers installed and does not require expensive power. It is large enough to be accurate yet takes minimum floor space.
Since the time of prototype construction, Dynaudio components are unavailable to public.
To be used include Peerless 12" 3ISSWR3908, 2" 134DMRSIF08 mids and Morel MDT37 tweeters with predicted excellent results.
Over 4000 Internet sites have been searched for similarity before patent seeking.
In an acoustical Loudspeaker reproducer using cone and dome drivers, it is known that an enclosure znu~ be built in order to mount these drivers; this enclosure also=
serves. to prevent the. cancellation of the Lover frequency acoustical. waves..
In this invention, a commercially available concrete container known as a. SONO-TUBE or. SONUCRET'E or ~UICI~:CRETE Tube ;is used. as an enclosure.
It replaces. particle. board,1~DF (medium density fiberboard), plywood, and other materials, the majority of these materials being manufactured panels of 4.' x 8' sheeting and other si.~s.
The disadvantages of these conventional materials are numerous and include high costs, heavy weight, leftover waste materials, high equipment cost for manufacturing purposes, and the inherent tendency of a Ilat panel to resonate and thus introduce audible distortion products to the sound of the audio reproducer.
Figure 1 shows a frontal elevation of the reproducer and figure la shows low frequency location, 1 b shows midrange driver and 1 c shows tweeter .
Figure 2 is a top view of the embodiment and clearly shows the Lower frequency driver mounting, the low frequency driver being mounted on the upward end cap to the tube.
Figure 3 is a section of the Line Z-Z of Figure l and it shows the midrange or tweeter driver ted fln-the frontal curved surface of the :tube. T-his-crciss-sect view shows the compressible mounting material and/or shaped mountings needed to mount a flat driver to.a radius su~a~ce.
Figure 4 shows an exploded view of the end caps made with IvIDF. These can be .plainly made or embellished depending on the appearance desired.
Figure 5 shows details of the top end cap including the protective grill details and venting details for the transmission Line enclosure.
Figure G shows the acoustical wave propagation pattern from a top view and/or ceiling view looking down to the embodiment.
Figure 7 shows the sound wave patterns of a frontal view of the embodiment, with the Low frequency driver waves hitting the ceiling. Not shown are the reflected waves for claxity.
Figure 8 shows a bipolar version of the enclosure and seen are the Low frequency acoustical waves directed towards the ceiling and the floor. The mid and high frequencies driver shown point to the listener. The backwards pointed midrange and tw~ter drivers are not visible but direct their sound towards the back wall of the listening room, and the sound is reflected towards the listener.
In building this invention, the costs are lower, the building time is reduced, the enclosure is much lighter, and material usage is minimal. Numerous finishes for the enclosure can be applied especially the pre-glued vinyl simulated finishes in woodgrain, marbled, solid colours and the new metal finishes.
In testing this enclosure, the sound has been exceptional when compared to traditional enclosures since the tube is inherently strong and thus acoustically transparent and enclosure resonance is minimal as compared to traditional approaches.
Diffraction edge effects are minuscule. Custom heights of tubes can be made available for higher ceiling heights. A formula of 66% of the room height ensures pleasing acoustical performance.
Wall mounting is utilized in the bipolar models, increasing apparent floor space , the enclosures hung midway with same distance to floor and ceiling. These may be wired for a small room (wire for surround channels to increase apparent size and space) and for a large room (ware for sound reinforcement of the main channels).
In the first installation a 5.1 configuration is adequate and these large enclosures do not require a subwoofer addition. A center channel speaker is optional and not required.
In the latter installation a sound reinforcement approach works well to supplement the main sound and a sense of space will be provided adequately by the room size.
Unfavourable listening results were found when listening to these loudspeakers in a mom with a complex ceiling, (e.g. unf nished basement ceiling.). Since the low frequency driver fires its acoustical waves upward and uses the ceiling as a .reflective surface, rafters and/or floor foists on the ceiling surface of the listening room act as a lower frequency sound trap for the upward Erring woofer.
I have searched the Internet, numerous publications and the patent office websites in Canada and the U.S. for a similar product and have found none.
Key Words used: Tubular or Tubelike loudspeaker, Cylindrical loudspeaker, Sonotube loudspeaker.
I am aware that numerous companies manufacture subwo~~fer enclosures (e.g:
www.svsubwoofers.com) and many individuals have built subwoofers using these SONOTUBES (e.g. Search Sonotube loudspeakers) but I have not found these tubes utilized as FULL RANGE ACOUSTICAL LOUDSPEAKER REPRODUCERS in the manner presented in the above claim.
Specifications of prototype built by inventor are as follows:
16 inch. by 64 inches Sonotube ( 2 of these used for stereo anddor bipolar use) end caps of 9/16 " MDF sheet material (both an inner and an outer cap were used) 12 inch Dynaudio 30W54 high excursion low frequency d~~iver ( 2 for stereo) 2 of 13m/8636 Scan Speak Kevlar midranges for midrange frequencies 2 of D28 Dynaudio tweeters 3 way Philips/Deforest crossover at 450HZ/3S00HZ points 1 inch of polyfili batting for damping the inside of enclosures 45.5 square inch duraflo vinyl vent per enclosure 2.5 rolls of Contact Brand vinyl adhesive to finish the exterior of the tubes These were powered by a 260 watts per channel Yamaha power a~np and preamp combo.
References include IrEF TL80 transmission line International Reference Standard Monitors, Panasonic SA HT-900 system and a $17000 system of 750 watts per channel incorporating 5 power amplifiers, I mixer and 1 electronic crossover powering custom corner horn loaded bass bins with 18" Beyma low frequency drivers and 2 of 1270-~35 titanium drivers with 2380 Megga Sound Horns supplemented by SF18 tweeter combo by Megga Sound. Front and rear surround equipment information is omitted for clarity.
Sonotube full range acoustical loudspeaker reproducer offer the dynamics of the reference horn system with the accuracy and analytical details of the REF reference system. It is efficient with the proper drivers installed and does not require expensive power. It is large enough to be accurate yet takes minimum floor space.
Since the time of prototype construction, Dynaudio components are unavailable to public.
To be used include Peerless 12" 3ISSWR3908, 2" 134DMRSIF08 mids and Morel MDT37 tweeters with predicted excellent results.
Over 4000 Internet sites have been searched for similarity before patent seeking.
Claims (5)
1- A loudspeaker enclosure for housing woofer, midrange and tweeter drivers, comprising a SONOTUBE or equivalent tube, a machined woofer end cap at the top end of the tube and a plain end cap at the bottom end of the tube.
2- A loudspeaker enclosure defined in Claim 1, in which the mid and high driver are positioned on the cylindrical part of the tube, facing the listener.
3- A loudspeaker enclosure defined in Claim 1 and Claim 2, in which the bottom plain end cap may be substituted with a round gable vent to cap the end of the tube and to vent the sound of the woofer back wave out of the cabinet.
4- A loudspeaker enclosure defined in Claim 1, Claim 2 and Claim 3, in which legs may be installed at the bottom end of the tube for floor standing applications.
5- A loudspeaker enclosure defined in Claim 1, Claim 2, Claim 3 and Claim 4, in which legs may be omitted and wall mounting hardware may be installed to the invention in order to maximize floor space and sonic results.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2469288 CA2469288A1 (en) | 2004-06-10 | 2004-06-10 | Sonotube full range loudspeaker acoustical reproducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2469288 CA2469288A1 (en) | 2004-06-10 | 2004-06-10 | Sonotube full range loudspeaker acoustical reproducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2469288A1 true CA2469288A1 (en) | 2005-12-10 |
Family
ID=35478485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2469288 Abandoned CA2469288A1 (en) | 2004-06-10 | 2004-06-10 | Sonotube full range loudspeaker acoustical reproducer |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2469288A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105430554A (en) * | 2015-11-30 | 2016-03-23 | 曾卓 | Environment-friendly loudspeaker box using water pipes as main raw material |
-
2004
- 2004-06-10 CA CA 2469288 patent/CA2469288A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105430554A (en) * | 2015-11-30 | 2016-03-23 | 曾卓 | Environment-friendly loudspeaker box using water pipes as main raw material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |