CN202957958U - Dual-cone phase inversion type thin speaker box - Google Patents
Dual-cone phase inversion type thin speaker box Download PDFInfo
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- CN202957958U CN202957958U CN 201220646537 CN201220646537U CN202957958U CN 202957958 U CN202957958 U CN 202957958U CN 201220646537 CN201220646537 CN 201220646537 CN 201220646537 U CN201220646537 U CN 201220646537U CN 202957958 U CN202957958 U CN 202957958U
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Abstract
The utility model relates to a dual-cone phase inversion type thin speaker box. A box body mainly comprises an upper shell and a lower shell; a tweeter unit installing hole, a woofer unit installing hole and a lower shell phase inversion hole are formed in the lower shell; the tweeter unit installing hole and the woofer unit installing hole are distributed along the direction of a long axis and are located in the left half of the lower shell; the tweeter unit installing hole is close to the left end of the lower shell; the lower shell phase inversion hole is distributed along the direction of the long axis and located in the right half of the lower shell; an opening of the lower shell phase inversion hole is located at the right end of the lower shell; a tweeter unit locating groove, a woofer unit locating groove and an upper shell phase inversion hole are formed in the upper shell; the lower shell and the upper shell are formed into the box body; tweeter speaker units are arranged in the tweeter unit installing hole and the tweeter unit locating groove; woofer speaker units are arranged in the woofer unit installing hole and the woofer unit locating groove; and the lower shell phase inversion hole and the upper shell phase inversion hole are combined to form a phase inversion pipe in a corresponding mode. The dual-cone phase inversion type thin speaker box has the advantages of being skillful and reasonable in structure and achieving good low frequency tone quality under the condition of guaranteeing a thin structure of a speaker box.
Description
Technical field
The utility model belongs to the electroacoustic techniques field, relates to a kind of loudspeaker acoustic enclosure, specifically an a kind of double-tone basin medium and low spectrum loudspeaker unit and slim double-tone basin inverted phase type loudspeaker acoustic enclosure that the high pitch loudspeaker unit forms of adopting.
Background technology
In prior art, the product thickness that is applied to the loudspeaker acoustic enclosure of LED TV requires in 10mm.The design of traditional loudspeaker acoustic enclosure based on high tone quality, two loudspeaker unit (high pitchs of general employing, a medium and low spectrum loudspeaker unit) form, but because the structure of woofer unit is limit, must cause whole speaker box structure partially thick, not be suitable for slim LED electroacoustic equipment and use.Therefore, seek a kind of at thickness thinner (in 10mm), and the better low frequency tonequality of tool, being applicable to the thin speaker audio amplifier that the LED TV uses is a problem of electroacoustic techniques field face.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of slim double-tone basin inverted phase type loudspeaker acoustic enclosure is provided, its structure is ingenious rationally, adopt upper casing and lower casing to form casing, built-in reinforcement, and extend to form phase-reversing tube by reinforcement, and being issued to low frequency tonequality preferably at the thin type structure that guarantees loudspeaker acoustic enclosure, can realize well mating with the LED TV.
The technical scheme provided according to the utility model: slim double-tone basin inverted phase type loudspeaker acoustic enclosure, comprise casing, medium and low spectrum loudspeaker unit and high pitch loudspeaker unit, it is characterized in that: described casing mainly is comprised of lower casing and upper casing; Be provided with voice unit installing hole, bass unit installing hole and lower casing paraphase hole in described lower casing, described voice unit installing hole and bass unit installing hole distribute and are positioned at the left-half of lower casing along long axis direction, the voice unit installing hole is near the lower casing left end, described lower casing paraphase hole distributes and is positioned at the right half part of lower casing along long axis direction, and the opening of lower casing paraphase hole is positioned at the lower casing right-hand member; Be provided with voice unit location notch, bass unit location notch and upper casing paraphase hole in described upper casing, described voice unit location notch and bass unit location notch distribute and are positioned at the left-half of upper casing along long axis direction, the voice unit location notch is near the upper casing left end, described upper casing paraphase hole distributes and is positioned at the right half part of upper casing along long axis direction, and the opening of upper casing paraphase hole is positioned at the lower casing right-hand member; Described lower casing and the upper casing composition casing of combining closely, described high pitch loudspeaker unit is placed in voice unit installing hole and voice unit location notch, described medium and low spectrum loudspeaker unit is placed in bass unit installing hole and bass unit location notch, described lower casing paraphase hole and upper casing paraphase hole correspondence are combined into phase-reversing tube, end opening and medium and low spectrum loudspeaker cell conduction in described phase-reversing tube, the phase-reversing tube outer end opening be positioned on the casing right side and with casing outside conducting.
Described high pitch loudspeaker unit comprises high pitch basin frame, high pitch U iron, high pitch magnet, high pitch magnetic pole core, high pitch voice coil loudspeaker voice coil and sound film, described high pitch basin frame is arranged in the voice unit location notch, in the mesopore of high pitch basin frame bottom, high pitch U iron is set, the described high pitch U iron upper base surface high pitch magnet of combining closely, the described high pitch magnet upper surface high pitch magnetic pole core of combining closely, have certain magnetic gap between the inwall of the outer wall of described high pitch magnet and high pitch magnetic pole core and high pitch U iron; Described high pitch voice coil loudspeaker voice coil be looped around high pitch magnet and high pitch magnetic pole core around, the outer wall of the inwall of high pitch voice coil loudspeaker voice coil and high pitch magnet and high pitch magnetic pole core leaves gap, the inwall of the outer wall of high pitch voice coil loudspeaker voice coil and high pitch U iron leaves space equally; Described sound film is arranged on high pitch magnetic pole core top, combines closely in sound film edge lower surface and high pitch basin frame upper surface, high pitch voice coil loudspeaker voice coil top.
As further improvement of the utility model, the bottom lower surface of described high pitch U iron keeps flushing with the bottom lower surface of lower casing.
As further improvement of the utility model, described medium and low spectrum loudspeaker unit comprises bass basin frame, bass U iron, bass magnet, bass magnetic pole core, bass voice coil loudspeaker voice coil, locating support, secondary sound basin, keynote basin and dust cap, described bass basin frame is arranged in the bass unit location notch, and bass basin frame bottom is positioned at the bass unit installing hole; In the mesopore of described bass basin frame bottom, bass U iron is set, the described bass U iron upper base surface bass magnet of combining closely, the described bass magnet upper surface bass magnetic pole core of combining closely, have certain magnetic gap between the inwall of the outer wall of bass magnet and bass magnetic pole core and bass U iron; Described bass voice coil loudspeaker voice coil be looped around bass magnet and bass magnetic pole core around, the outer wall of the inwall of bass voice coil loudspeaker voice coil and bass magnet and bass magnetic pole core leaves gap, the inwall of the outer wall of bass voice coil loudspeaker voice coil and bass U iron leaves space equally; Described locating support is placed in bass basin frame, and the locating support top arranges secondary sound basin, and locating support top and secondary sound basin rim under surface are combined closely; Described secondary sound basin top arranges the keynote basin, and described keynote basin rim under surface and bass basin frame upper surface are combined closely; Described bass voice coil loudspeaker voice coil runs through keynote basin mesopore and secondary sound basin mesopore simultaneously, combines closely in the interior edge of the outer wall of bass voice coil loudspeaker voice coil and keynote basin mesopore and secondary sound basin mesopore; Described bass voice coil loudspeaker voice coil top is provided with dust cap.
As further improvement of the utility model, the bottom lower surface of the bottom lower surface of the lower surface of described bass basin frame, bass U iron and lower casing keeps flushing.
As further improvement of the utility model, the inner surface of described lower casing is provided with the lower casing reinforcement, and described lower casing paraphase hole is extended to form by the lower casing reinforcement; The inner surface of described upper casing is provided with the upper casing reinforcement, and described upper casing phase-reversing tube is extended to form by the upper casing reinforcement.
As further improvement of the utility model, described phase-reversing tube is arranged on the center of casing along long axis direction, and the length of phase-reversing tube is less than 1/2 of casing major axis total length.
As further improvement of the utility model, described phase-reversing tube outer end opening be shaped as circular arc.
Compared with prior art, advantage is the utility model:The utility model structure is ingenious rationally, and the medium and low spectrum loudspeaker unit that it adopts is the double-tone basin structure with keynote basin and secondary sound basin, can effectively increase the low frequency tonequality of whole loudspeaker acoustic enclosure; The casing of audio amplifier is comprised of upper casing and lower casing, in upper casing, lower casing, reinforcement is set, and can effectively avoid the acoustical flaws such as loud speaker " acoustic short circuit " and casing resonance interference; And phase-reversing tube is directly extended to form by reinforcement after acoustic design, without increasing additional components, by double-tone basin medium and low spectrum loudspeaker unit anti-phase acoustic radiation export to the casing outside, obviously strengthen low frequency tonequality, be issued to better sound quality at the thin type structure that guarantees loudspeaker acoustic enclosure, can realize well and LED TV coupling, for the user provides ratio of performance to price product preferably.
The accompanying drawing explanation
The stereo decomposing structure chart that Fig. 1 is the utility model embodiment.
The section of structure that Fig. 2 is the utility model embodiment.
The three-dimensional structure diagram that Fig. 3 is the utility model upper casing, lower casing.
Description of reference numerals: 1-upper casing, 1a-bass location notch, 1b-high pitch location notch, 1c-upper casing phase-reversing tube, 1d-upper casing reinforcement, 2-lower casing, 2a-bass installing hole, 2b-high pitch installing hole, 2c-lower casing paraphase hole, 2d-lower casing reinforcement, 3a-bass basin frame, 3b-high pitch basin frame, 4a-bass U iron, 4b-high pitch U iron, 5a-bass magnet, 5b-high pitch magnet, 6a-bass magnetic pole core, 6b-high pitch magnetic pole core, 7a-bass voice coil loudspeaker voice coil, 7b-high pitch voice coil loudspeaker voice coil, 8a-locating support, 9a-secondary sound basin, 10a-keynote basin, 10b-sound film, 11a-dust cap.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
As shown in the figure: the slim double-tone basin inverted phase type loudspeaker acoustic enclosure in embodiment mainly is comprised of casing, medium and low spectrum loudspeaker unit and high pitch loudspeaker unit, and described casing mainly is comprised of lower casing 2 and upper casing 1; Be provided with voice unit installing hole 2b, bass unit installing hole 2a and lower casing paraphase hole 2c in described lower casing 2, described voice unit installing hole 2b and bass unit installing hole 2a distribute and are positioned at the left-half of lower casing 2 along long axis direction, voice unit installing hole 2b is near lower casing 2 left ends, described lower casing paraphase hole 2c distributes and is positioned at the right half part of lower casing 2 along long axis direction, and the opening of lower casing paraphase hole 2c is positioned at lower casing 2 right-hand members; Be provided with voice unit location notch 1b, bass unit location notch 1a and upper casing paraphase hole 1c in described upper casing 1, described voice unit location notch 1b and bass unit location notch 1a distribute and are positioned at the left-half of upper casing 1 along long axis direction, voice unit location notch 1b is near upper casing 1 left end, described upper casing paraphase hole 1c distributes and is positioned at the right half part of upper casing 1 along long axis direction, and the opening of upper casing paraphase hole 1c is positioned at lower casing 2 right-hand members; Described lower casing 2 and the upper casing 1 composition casing of combining closely, described high pitch loudspeaker unit is placed in voice unit installing hole 2b and voice unit location notch 1b, described medium and low spectrum loudspeaker unit is placed in bass unit installing hole 2a and bass unit location notch 1a, described lower casing paraphase hole 2c and upper casing paraphase hole 1c correspondence are combined into phase-reversing tube, end opening and medium and low spectrum loudspeaker cell conduction in described phase-reversing tube, the phase-reversing tube outer end opening be positioned on the casing right side and with casing outside conducting.
The structure of described high pitch loudspeaker unit is as Fig. 1, shown in Fig. 2, it is mainly by high pitch basin frame 3b, high pitch U iron 4b, high pitch magnet 5b, high pitch magnetic pole core 6b, high pitch voice coil loudspeaker voice coil 7b and sound film 10b form, described high pitch basin frame 3b is arranged in voice unit location notch 1b, in the mesopore of high pitch basin frame 3b bottom, high pitch U iron 4b is set, the described high pitch U iron 4b upper base surface high pitch magnet 5b that combines closely, the described high pitch magnet 5b upper surface high pitch magnetic pole core 6b that combines closely, between the inwall of the outer wall of described high pitch magnet 5b and high pitch magnetic pole core 6b and high pitch U iron 4b, certain magnetic gap is arranged, described high pitch voice coil loudspeaker voice coil 7b be looped around high pitch magnet 5b and high pitch magnetic pole core 6b around, the outer wall of the inwall of high pitch voice coil loudspeaker voice coil 7b and high pitch magnet 5b and high pitch magnetic pole core 6b leaves gap, the inwall of the outer wall of high pitch voice coil loudspeaker voice coil 7b and high pitch U iron 4b leaves space equally, described sound film 10b is arranged on high pitch magnetic pole core 6b top, combines closely in sound film 10b rim under surface and high pitch basin frame 3b upper surface, high pitch voice coil loudspeaker voice coil 7b top.
In described high pitch loudspeaker unit, the bottom lower surface of described high pitch U iron 4b preferably is set to keep with the bottom lower surface of lower casing 2 version flushed.
The structure of described medium and low spectrum loudspeaker unit as shown in Figure 1 and Figure 2, it mainly is comprised of bass basin frame 3a, bass U iron 4a, bass magnet 5a, bass magnetic pole core 6a, bass voice coil loudspeaker voice coil 7a, locating support 8a, secondary sound basin 9a, keynote basin 10a and dust cap 11a, described bass basin frame 3a is arranged in bass unit location notch 1a, and bass basin frame 3a bottom is positioned at bass unit installing hole 2a; In the mesopore of described bass basin frame 3a bottom, bass U iron 4a is set, the described bass U iron 4a upper base surface bass magnet 5a that combines closely, the described bass magnet 5a upper surface bass magnetic pole core 6a that combines closely, have certain magnetic gap between the inwall of the outer wall of bass magnet 5a and bass magnetic pole core 6a and bass U iron 4a; Described bass voice coil loudspeaker voice coil 7a be looped around bass magnet 5a and bass magnetic pole core 6a around, the outer wall of the inwall of bass voice coil loudspeaker voice coil 7a and bass magnet 5a and bass magnetic pole core 6a leaves gap, the inwall of the outer wall of bass voice coil loudspeaker voice coil 7a and bass U iron 4a leaves space equally; Described locating support 8a is placed in bass basin frame 3a, and locating support 8a top arranges secondary sound basin 9a, and locating support 8a top and secondary sound basin 9a rim under surface are combined closely; Described secondary sound basin 9a top arranges keynote basin 10a, and described keynote basin 10a rim under surface and bass basin frame 3a upper surface are combined closely; Described bass voice coil loudspeaker voice coil 7a runs through keynote basin 10a mesopore and secondary sound basin 9a mesopore simultaneously, combines closely in the interior edge of the outer wall of bass voice coil loudspeaker voice coil 7a and keynote basin 10a mesopore and secondary sound basin 9a mesopore; Described bass voice coil loudspeaker voice coil 7a top is provided with dust cap 11a.
In described medium and low spectrum loudspeaker unit, the bottom lower surface of the lower surface of described bass basin frame 3a, bass U iron 4a and the bottom lower surface of lower casing 2 preferably are arranged to keep the version flushed.
As shown in Fig. 1 ~ Fig. 3, in the utility model, the inner surface of described lower casing 2 is provided with lower casing reinforcement 2d, and described lower casing paraphase hole 2c is extended to form by lower casing reinforcement 2d; The inner surface of described upper casing 1 is provided with upper casing reinforcement 1d, and described upper casing 1 phase-reversing tube is extended to form by upper casing reinforcement 1d.Described phase-reversing tube is arranged on the center of casing along long axis direction, and the length of phase-reversing tube is less than 1/2 of casing major axis total length.Described phase-reversing tube outer end opening be shaped as circular arc.
Claims (8)
1. slim double-tone basin inverted phase type loudspeaker acoustic enclosure, comprise casing, medium and low spectrum loudspeaker unit and high pitch loudspeaker unit, it is characterized in that: described casing mainly is comprised of lower casing (2) and upper casing (1); Be provided with voice unit installing hole (2b), bass unit installing hole (2a) and lower casing paraphase hole (2c) in described lower casing (2), described voice unit installing hole (2b) and bass unit installing hole (2a) distribute and are positioned at the left-half of lower casing (2) along long axis direction, voice unit installing hole (2b) is near lower casing (2) left end, described lower casing paraphase hole (2c) distributes and is positioned at the right half part of lower casing (2) along long axis direction, and the opening of lower casing paraphase hole (2c) is positioned at lower casing (2) right-hand member; Be provided with voice unit location notch (1b), bass unit location notch (1a) and upper casing paraphase hole (1c) in described upper casing (1), described voice unit location notch (1b) and bass unit location notch (1a) distribute and are positioned at the left-half of upper casing (1) along long axis direction, voice unit location notch (1b) is near upper casing (1) left end, described upper casing paraphase hole (1c) distributes and is positioned at the right half part of upper casing (1) along long axis direction, and the opening of upper casing paraphase hole (1c) is positioned at lower casing (2) right-hand member; Described lower casing (2) and upper casing (1) the composition casing of combining closely, described high pitch loudspeaker unit is placed in voice unit installing hole (2b) and voice unit location notch (1b), described medium and low spectrum loudspeaker unit is placed in bass unit installing hole (2a) and bass unit location notch (1a), described lower casing paraphase hole (2c) and upper casing paraphase hole (1c) correspondence are combined into phase-reversing tube, end opening and medium and low spectrum loudspeaker cell conduction in described phase-reversing tube, the phase-reversing tube outer end opening be positioned on the casing right side and with casing outside conducting.
2. slim double-tone basin inverted phase type loudspeaker acoustic enclosure as claimed in claim 1, it is characterized in that: described high pitch loudspeaker unit comprises high pitch basin frame (3b), high pitch U iron (4b), high pitch magnet (5b), high pitch magnetic pole core (6b), high pitch voice coil loudspeaker voice coil (7b) and sound film (10b), described high pitch basin frame (3b) is arranged in voice unit location notch (1b), in the mesopore of high pitch basin frame (3b) bottom, high pitch U iron (4b) is set, described high pitch U iron (4b) the upper base surface high pitch magnet (5b) of combining closely, described high pitch magnet (5b) the upper surface high pitch magnetic pole core (6b) of combining closely, between the inwall of the outer wall of described high pitch magnet (5b) and high pitch magnetic pole core (6b) and high pitch U iron (4b), certain magnetic gap is arranged, described high pitch voice coil loudspeaker voice coil (7b) be looped around high pitch magnet (5b) and high pitch magnetic pole core (6b) around, the outer wall of the inwall of high pitch voice coil loudspeaker voice coil (7b) and high pitch magnet (5b) and high pitch magnetic pole core (6b) leaves gap, and the inwall of the outer wall of high pitch voice coil loudspeaker voice coil (7b) and high pitch U iron (4b) leaves space equally, described sound film (10b) is arranged on high pitch magnetic pole core (6b) top, combines closely in sound film (10b) rim under surface and high pitch basin frame (3b) upper surface, high pitch voice coil loudspeaker voice coil (7b) top.
3. slim double-tone basin inverted phase type loudspeaker acoustic enclosure as claimed in claim 2 is characterized in that: the bottom lower surface of described high pitch U iron (4b) keeps flushing with the bottom lower surface of lower casing (2).
4. slim double-tone basin inverted phase type loudspeaker acoustic enclosure as claimed in claim 1, it is characterized in that: described medium and low spectrum loudspeaker unit comprises bass basin frame (3a), bass U iron (4a), bass magnet (5a), bass magnetic pole core (6a), bass voice coil loudspeaker voice coil (7a), locating support (8a), secondary sound basin (9a), keynote basin (10a) and dust cap (11a), described bass basin frame (3a) is arranged in bass unit location notch (1a), and bass basin frame (3a) bottom is positioned at bass unit installing hole (2a); In the mesopore of described bass basin frame (3a) bottom, bass U iron (4a) is set, described bass U iron (4a) the upper base surface bass magnet (5a) of combining closely, described bass magnet (5a) the upper surface bass magnetic pole core (6a) of combining closely, have certain magnetic gap between the outer wall of bass magnet (5a) and bass magnetic pole core (6a) and the inwall of bass U iron (4a); Described bass voice coil loudspeaker voice coil (7a) be looped around bass magnet (5a) and bass magnetic pole core (6a) around, the outer wall of the inwall of bass voice coil loudspeaker voice coil (7a) and bass magnet (5a) and bass magnetic pole core (6a) leaves gap, and the inwall of the outer wall of bass voice coil loudspeaker voice coil (7a) and bass U iron (4a) leaves space equally; Described locating support (8a) is placed in bass basin frame (3a), and locating support (8a) top arranges secondary sound basin (9a), and locating support (8a) top and secondary sound basin (9a) rim under surface are combined closely; Described secondary sound basin (9a) top arranges keynote basin (10a), and described keynote basin (10a) rim under surface and bass basin frame (3a) upper surface are combined closely; Described bass voice coil loudspeaker voice coil (7a) runs through keynote basin (10a) mesopore and secondary sound basin (9a) mesopore simultaneously, combines closely in the interior edge of the outer wall of bass voice coil loudspeaker voice coil (7a) and keynote basin (10a) mesopore and secondary sound basin (9a) mesopore; Described bass voice coil loudspeaker voice coil (7a) top is provided with dust cap (11a).
5. slim double-tone basin inverted phase type loudspeaker acoustic enclosure as claimed in claim 4 is characterized in that: the bottom lower surface of the bottom lower surface of the lower surface of described bass basin frame (3a), bass U iron (4a) and lower casing (2) keeps flushing.
6. slim double-tone basin inverted phase type loudspeaker acoustic enclosure as claimed in claim 1, it is characterized in that: the inner surface of described lower casing (2) is provided with lower casing reinforcement (2d), and described lower casing paraphase hole (2c) is extended to form by lower casing reinforcement (2d); The inner surface of described upper casing (1) is provided with upper casing reinforcement (1d), and described upper casing (1) phase-reversing tube is extended to form by upper casing reinforcement (1d).
7. slim double-tone basin inverted phase type loudspeaker acoustic enclosure as claimed in claim 1, it is characterized in that: described phase-reversing tube is arranged on the center of casing along long axis direction, and the length of phase-reversing tube is less than 1/2 of casing major axis total length.
8. slim double-tone basin inverted phase type loudspeaker acoustic enclosure as claimed in claim 1 is characterized in that: described phase-reversing tube outer end opening be shaped as circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646537 CN202957958U (en) | 2012-11-29 | 2012-11-29 | Dual-cone phase inversion type thin speaker box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646537 CN202957958U (en) | 2012-11-29 | 2012-11-29 | Dual-cone phase inversion type thin speaker box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957958U true CN202957958U (en) | 2013-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220646537 Withdrawn - After Issue CN202957958U (en) | 2012-11-29 | 2012-11-29 | Dual-cone phase inversion type thin speaker box |
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| Country | Link |
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| CN (1) | CN202957958U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103037283A (en) * | 2012-11-29 | 2013-04-10 | 无锡杰夫电声有限公司 | Thin double-cone phase inversion type loudspeaker box |
| US9106991B1 (en) | 2014-04-10 | 2015-08-11 | Pelegrin Torres, Jr. | Speaker cabinet |
-
2012
- 2012-11-29 CN CN 201220646537 patent/CN202957958U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103037283A (en) * | 2012-11-29 | 2013-04-10 | 无锡杰夫电声有限公司 | Thin double-cone phase inversion type loudspeaker box |
| WO2014082368A1 (en) * | 2012-11-29 | 2014-06-05 | 无锡杰夫电声有限公司 | Thin double-cone phase-inverted loudspeaker enclosure |
| CN103037283B (en) * | 2012-11-29 | 2015-09-02 | 无锡杰夫电声有限公司 | Thin double-cone phase inversion type loudspeaker box |
| US9106991B1 (en) | 2014-04-10 | 2015-08-11 | Pelegrin Torres, Jr. | Speaker cabinet |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130529 Effective date of abandoning: 20150902 |
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| RGAV | Abandon patent right to avoid regrant |