A filed replicable and adjustable bass port attachment assembly for sound system

Abstract

The present invention relates to a field replicable and adjustable bass port attachment assembly for sound system (1), comprises of a port holder (2); a port attachment (3, 4); and a port attachment tool (5). The port holder (2) is adapted to be secured to a main speaker enclosure (6) of said sound system (1). The port holder (2) has an internal thread (7) on internal portion. The port attachment (3, 4) has a counter thread (8) on the outer portion of said port attachment (3, 4).The internal thread (7) and said counter thread (8) are rotatably engaged with each other through said port attachment tool (5) so as to provide a secured connection between said port holder (2) and said port attachment (3, 4) to adjust the bass port parameter as per user preference.

Description

[0001] “A FILED REPLICABLE AND ADJUSTABLE BASS PORT ATTACHMENT ASSEMBLY FOR SOUND SYSTEM”

[0002] FIELD OF THE INVENTION

[0003] The present invention relates to a bass port attachment assembly for a sound system. More particularly, the present invention relates to a field replicable and adjustable bass port attachment in a loudspeaker device, which facilitates to tune speaker or subwoofer cabinet for acoustic response.

[0004] BACKGROUND OF THE INVENTION

[0005] A woofer or bass speaker is a type of loudspeaker device to reproduce low-frequency sounds, typically from around 20 Hz to 500 Hz or higher, depending on the specific structure and capabilities. Woofers are commonly found in various audio setups, including home theater systems, car audio systems, professional sound reinforcement systems, and standalone subwoofers. They work in conjunction with other speaker device, such as midrange and tweeters, to create a balanced and full-range audio experience.

[0006] Woofers are usually larger in size compared to other devices in a speaker system. Woofers are made to move a larger volume of air, allowing woofers to produce lower frequencies with greater accuracy and efficiency. This is achieved through bass port that enhances low-end frequencies by channeling sound from the rear of the speaker diaphragm.

[0007] There are several types of bass port structures like straight pipe, flared opening, both sides flared, damping material filled ports etc. The end user must choose a product, which suits his acoustic preference in the demo room. Once purchased, user is not able to change the bass port parameter according to their home acoustic or speaker placement that restricts the user sound experience in their suitable environment.

[0008] In addition to this, the problem arises when an end user chooses a product based on its acoustic performance in a demo room or controlled environment. Once the product is purchased, the user is unable to change the bass port parameter to accommodate their

[0009] 1

[0010] SUBSTITUTE SHEET (RULE 26) home's unique acoustic properties or speaker placement. This limitation negatively impacts the user's sound experience in their specific environment.

[0011] US9635454B2, discloses a speaker cabinet includes at least one loudspeaker and at least one port, the port having an outlet formed in a wall of the cabinet, an inlet inside the cabinet, and a casing connecting the inlet and the outlet together, the inlet of the port further having at least one recess in the casing. The main drawback of this invention is that the user is not able to change the bass port parameter according to their home acoustic or speaker placement that reduces the user sound experience in their suitable environment.

[0012] EP3544315A1, discloses a bass reflex port including: a tubular body portion, and a surface forming portion which is board-like, and continuous to an inner wall of the tubular body portion and which has a surface extending radially outwardly from an opening end of the tubular body portion disposed in a housing of a speaker, wherein the surface forming portion extends linearly in a direction away from a tube axis of the tubular body portion in a cross section parallel to the tube axis. The main drawback of this invention is that the user is not able to change the bass port parameter according to their home acoustic or speaker placement that reduces the user sound experience in their suitable environment.

[0013] US8430200B2, discloses a speaker apparatus includes a phase inversion-type enclosure in which a speaker unit and a bass reflex port are installed, the bass reflex port having a tubular body whose hollow cross-sectional area gradually becomes smaller from one opening side toward an inside of the bass reflex port in an axial direction of the bass reflex port, and a length in one direction of the hollow cross section of the tubular body not changing and constant along the axial direction. The main drawback of this invention is that the user is not able to change the bass port parameter according to their home acoustic or speaker placement that reduces the user sound experience in their suitable environment.

[0014] US9794680, discloses an acoustic insert for lining a loudspeaker reflex port, the insert comprising an elongate hollow tube formed of a flexible material, having an outer wall sized and configured to seat within the port and an inner wall extending in the elongate direction, the inner wall having a circumference which varies along the length of the insert, When inserted in a port, the insert alters the port resonance so as to vary the acoustic performance of the loudspeaker. The main drawback of this invention is that the user is not able to change the bass port parameter according to their home acoustic or speaker placement that reduces the user sound experience in their suitable environment.

[0015] GB2352924A, discloses a speaker system for a display includes a speaker 1 for presenting a sound, a rear sound box 2 coupled to a back of the speaker, and a changeable duct 3 disposed to pass through a front surface of the speaker and to be positioned in the rear sound box, and detachably fitted to the speaker, for inverting a phase of a particular frequency of sound among sound generated in a back surface of the speaker. This permits, not only the change of the duct only for phase inversion of a desired frequency of a sound, but also to discharge of the phase inverted sound to the front of the speaker system. The main drawback of this invention is that the user is not able to change the bass port parameter according to their home acoustic or speaker placement that reduces the user sound experience in their suitable environment.

[0016] EP2779692B1, discloses a bass reflex port (30B) having a tubular shape for air flows, wherein an angle of a first inner radial line with respect to a reference plane including a center axis of the bass reflex port differs from an angle of a second inner radial line with respect to the reference plane, the first line being orthogonal to the center axis and passing a first characteristic point on an inner circumference of the bass reflex port in a first transverse cross section perpendicular to the center axis, the second line being orthogonal to the center axis and passing a second characteristic point corresponding to the first characteristic point and located on the inner circumference in a second transverse cross section perpendicular to the center axis, the first transverse cross section and the second transverse cross section differing form each other in position in a direction of extension of the center axis. The main drawback of this invention is that the user is not able to change the bass port parameter according to their home acoustic or speaker placement that reduces the user sound experience in their suitable environment.

[0017] Therefore, there is a need of a bass port attachment assembly for a loudspeaker device, which facilitate the user to change the bass port parameter according to the home acoustic or speaker placement that enhances the user sound experience in the suitable environment. OBJECT OF THE INVENTION

[0018] The main object of the present invention is to provide a field replicable and adjustable bass port attachment assembly for a sound system.

[0019] Another object of the present invention is to provide a field replicable and adjustable bass port attachment assembly for a sound system, which enables an audiophile to adjust the tonal response of low frequency of the speaker and subwoofer in the home environment.

[0020] Yet another object of the present invention is to provide a field replicable and adjustable bass port attachment assembly for a sound system, which provides more accurate audio tonal quality.

[0021] Yet another object of the present invention is to provide a field replicable and adjustable bass port attachment assembly for a sound system, which is economical and highly flexible.

[0022] Still another object of the present invention is to provide a field replicable and adjustable bass port attachment assembly for a sound system, which enhances the user sound experience in their suitable environment.

[0023] SUMMARY OF THE INVENTION

[0024] The present invention relates to a field replicable and adjustable bass port attachment assembly in a sound system like loudspeakers, which facilitates the user to tune speaker or subwoofer cabinet for acoustic response.

[0025] In an embodiment, the present invention provides a field replicable and adjustable bass port attachment assembly for sound system comprising a port holder, a port attachment, and a port attachment tool. The port holder is adapted to be secured to a main speaker enclosure of said sound system. The port holder has an internal thread on internal portion. The port attachment has a counter thread on the outer portion of said port attachment. The internal thread and said counter thread are rotatably engaged with each other through said port attachment tool so as to provide a secured connection between said port holder and said port attachment to adjust the bass port parameter as per user preference.

[0026] The port holder is in a hollow cylindrical configuration with its outer mouth having a flared shape structure. The port attachment has a plurality of internal spokes provided on the inside of said port attachment to facilitate rotational motion of said port attachment into said port holder. The port adjusting tool has a rod structure with a spoke structure. The spoke structure has a cavity provided therein to engage with plurality of internal spokes of said port attachment to facilitate rotational motion of said port attachment into said port holder.

[0027] In still another embodiment, the present invention provides a field replicable and adjustable bass port attachment assembly for sound system comprising: a port holder, a port attachment, and a port attachment tool. The port holder is adapted to be secured to a main speaker enclosure provided therein of said sound system. The port holder has an internal thread on an internal portion. The port attachment as a counter thread on the outer portion of said port attachment. The internal thread and said counter thread are rotatably engaged with each other through said port attachment tool so as to provide a secured connection between said port holder and said port attachment to adjust the bass port parameter as per user preference. The port holder is in a hollow cylindrical configuration with its outer mouth having a flared shape structure. The port attachment is in a hollow cylindrical configuration with its outer mouth having flared shaped structure. The port attachment has a plurality of internal spokes to facilitate rotational motion of said port attachment into said port holder. The port adjusting tool has a rod structure with a spoke structure. The spoke structure has a cavity provided therein to engage with plurality of internal spokes of said port attachment to facilitate rotational motion of said port attachment into said port holder.

[0028] The above objects and advantages of the present invention will become apparent from the hereinafter set forth brief description of the drawings, detailed description of the invention, and claims appended herewith.

[0029] BRIEF DESCRIPTION OF THE DRAWINGS An understanding of the field replicable and adjustable bass port attachment assembly for a sound system of the present invention may be obtained by reference to the following drawings:

[0030] Figure 1 is a perspective view of the sound system with a main speaker enclosure according to an embodiment of the present invention.

[0031] Figure 2 is a cross-sectional view of port holder of the bass port attachment assembly for a sound system according to an embodiment of the present invention.

[0032] Figure 3 is a side view of the port holder of the bass port attachment assembly for a sound system according to an embodiment of the present invention.

[0033] Figure 4 is a top view of the port holder of the bass port attachment assembly for a sound system according to an embodiment of the present invention.

[0034] Figure 5 is a side view of the port attachment without flared end portion (D70) of the bass port attachment assembly for a sound system according to an embodiment of the present invention.

[0035] Figure 6 is a front view of the port attachment without flared end portion (D70) of the bass port attachment assembly for a sound system according to an embodiment of the present invention.

[0036] Figure 7 is a side view of the port attachment with flared end portion (D55) of the bass port attachment assembly for a sound system according to an embodiment of the present invention.

[0037] Figure 8 is a front view of the port attachment with flared end portion (D55) of the bass port attachment assembly for a sound system according to an embodiment of the present invention.

[0038] Figure 9 is a side view of the port adjusting tool of bass port attachment assembly for a sound system according to an embodiment of the present invention. Figure 10 is a front view of the port adjusting tool attached to port attachment of bass port attachment assembly for a sound system according to an embodiment of the present invention.

[0039] Figure 11 is a graphical representation of frequency of a sealed sound system without any port attachment assembly of a sound system according to an embodiment of the present invention.

[0040] Figure 12 is a graphical representation of frequency comparison of a sound system without any port attachment assembly and with port attachment (D70) for a sound system according to an embodiment of the present invention.

[0041] Figure 13 is a graphical representation of frequency comparison of a sound system without any port attachment assembly and with port attachment (D55) for a sound system according to an embodiment of the present invention.

[0042] Figure 14 is a graphical representation of percentage relative gain port attachment (D70) of a sound system according to an embodiment of the present invention.

[0043] Figure 15 is a graphical representation of percentage relative gain port attachment (D55) of a sound system according to an embodiment of the present invention.

[0044] Figure 16 is a graphical representation of percentage relative gain of both port attachment ((D70) and (D55)) of a sound system according to an embodiment of the present invention.

[0045] DETAILED DESCRIPTION OF THE INVENTION

[0046] The present invention will now be described hereinafter with reference to the accompanying drawings in which a preferred embodiment of the invention is shown. This invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiment set forth herein. Rather, the embodiment is provided so that this disclosure will be thorough, and will fully convey the scope of the invention to those skilled in the art. Many aspects of the invention can be better understood with references made to the drawings below. The components in the drawings are not necessarily drawn to scale. Instead, emphasis is placed upon clearly illustrating the components of the present invention. Moreover, like reference numerals designate corresponding parts through the several views in the drawings. Before explaining at least one embodiment of the invention, it is to be understood that the embodiments of the invention are not limited in their application to the details of construction and to the arrangement of the components set forth in the following description or illustrated in the drawings. The embodiments of the invention are capable of being practiced and carried out in various ways. In addition, the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.

[0047] The present invention relates to a field replicable and adjustable bass port attachment assembly for a sound system, which facilitates the user to tune speaker or subwoofer cabinet acoustic response present therein by using multiple port attachments.

[0048] In an embodiment, the present invention provides a field replicable and adjustable bass port attachment assembly for sound system comprising a port holder; a port attachment; and a port attachment tool. The port holder is adapted to be secured to a main speaker enclosure of said sound system. The port holder has an internal thread on internal portion. The port attachment has a counter thread on the outer portion of said port attachment. The internal thread and said counter thread are rotatably engaged with each other through said port attachment tool so as to provide a secured connection between said port holder and said port attachment to adjust the bass port parameter as per user preference.

[0049] In another embodiment, the present invention provides a field replicable and adjustable bass port attachment assembly for sound system comprising a port holder; a port attachment; and a port attachment tool. The port holder is adapted to be secured to a main speaker enclosure provided therein of said sound system. The port holder has an internal thread on internal portion. The port attachment has a counter thread on the outer portion of said port attachment. The internal thread and said counter thread are rotatably engaged with each other through said port attachment tool so as to provide a secured connection between said port holder and said port attachment to adjust the bass port parameter as per user preference. The port holder is in a hollow cylindrical configuration with its outer mouth having a flared shape structure. The port attachment has a plurality of internal spokes provided on the inside of said port attachment to facilitate rotational motion of said port attachment into said port holder. The port adjusting tool has a rod structure with a spoke structure. The spoke structure has a cavity provided therein to engage with plurality of internal spokes of said port attachment to facilitate rotational motion of said port attachment into said port holder.

[0050] In still another embodiment, the present invention provides a field replicable and adjustable bass port attachment assembly for sound system comprising: a port holder; a port attachment; and a port attachment tool. The port holder is adapted to be secured to a main speaker enclosure provided therein of said sound system. The port holder has an internal thread on internal portion. The port attachment has a counter thread on the outer portion of said port attachment. The internal thread and said counter thread are rotatably engaged with each other through said port attachment tool so as to provide a secured connection between said port holder and said port attachment to adjust the bass port parameter as per user preference. The port holder is in a hollow cylindrical configuration with its outer mouth having a flared shape structure. The port attachment is in a hollow cylindrical configuration with its outer mouth having flared shaped structure. The port attachment has a plurality of internal spokes to facilitate rotational motion of said port attachment into said port holder. The port adjusting tool has a rod structure with a spoke structure. The spoke structure has a cavity provided therein to engage with plurality of internal spokes of said port attachment to facilitate rotational motion of said port attachment into said port holder.

[0051] Referring to Figure 1, a perspective view of the sound system with a main speaker enclosure according to an embodiment according to an embodiment is depicted. The sound system (1) has a main speaker enclosure (6). A port holder (2) is adapted to be secured to said main speaker enclosure (6) of said sound system (1) to adjust the bass port parameter as per user preference.

[0052] Referring to Figure 2(a), a cross-sectional view of the port holder of the bass port attachment assembly for a sound system according to an embodiment of the present invention is depicted. The port holder (2) is a hollow cylindrical configuration with its outer mouth having a flared shape structure having an internal thread (7) provided on the internal portion of said port holder (2) such that the port attachment (3,4) gets rotatably engaged and fixed with said port holder (2) adjusting the bass port parameter of the sound system (1). The port holder (2) is of larger diameter than said port attachment (3,4).

[0053] Referring to Figure 3, a side view of the port holder of bass port attachment assembly for a sound system according to an embodiment of the present invention is depicted. The port holder (2) is of hollow cylindrical configuration with its outer mouth having a flared shape structure.

[0054] Referring to Figure 4, a top view of the port holder of the bass port attachment assembly for a sound system according to an embodiment of the present invention is depicted. The port holder (2) has an internal thread (7) provided on the internal portion of said port holder (2) such that the port attachment (3,4) gets rotatably engaged and fixed with said port holder (2) adjusting the bass port parameter of the sound system (1). The port holder (2) is of larger diameter than said port attachment (3,4).

[0055] Referring to Figure 5, a side view of the port attachment without flared end portion (D70) of the bass port attachment assembly for a sound system according to an embodiment is depicted. The port attachment (3) is of hollow cylindrical shape having a counter thread (8) provided on the outer portion of said port attachment (3) and a plurality of internal spokes (9) (shown in Figure 6) is provided on the inside of said port attachment (3) to facilitate rotational motion of said port attachment (3) into said port holder (2) through a port attachment tool (5).

[0056] The counter thread (8) of said port attachment (3) and internal thread (7) of said port holder (2) gets rotatably engaged with each other through said port attachment tool (5) so as to provide a secured connection between said port holder (2) adjusting the bass port parameter of the sound system (1) as per user preference. The port attachment (3) is attached to said port holder (2) at different positions viz. anywhere from start till the end, thus adjusting the bass port parameter to fine tune the acoustic of the sound system (1). The port attachment (3) gets attached to said port holder (2) in complete 5 turns before reaching the end of the port holder (2). Referring to Figure 6, a front view of the port attachment without flared end portion (D70) of the bass port attachment assembly for a sound system according to an embodiment is depicted. The port attachment (3) is of hollow cylindrical shape having a plurality of internal spokes (9) to facilitate rotational motion of said port attachment (3) into said port holder (2).

[0057] Referring to Figure 7, a side view of the port attachment with flared end portion (D55) of the bass port attachment assembly for a sound system according to an embodiment is depicted. The port attachment (4) is of hollow cylindrical shape having an outer mouth having a flared shaped structure having a counter thread (8) provided on the outer portion of said port attachment (4) and a plurality of internal spokes (10) (shown in Figure 8) provided on the inside of said port attachment (4) to facilitate rotational motion of said port attachment (3) into said port holder (2) through a port attachment tool (5).

[0058] The counter thread (8) of said port attachment (4) and internal thread (6) of said port holder (2) gets rotatably engaged with each other through said port attachment tool (5) such that to provide a secured connection between said port holder (2) adjusting the bass port parameter of the sound system (1) as per user preference. The port attachment (3) is attached to said port holder (2) at three different positions viz. start, middle and end, thus adjusting the bass port parameter to fine tune the acoustic of the sound system (1). The port attachment (4) gets attached to said port holder (2) in a plurality of turns before reaching the end of the port holder (2). The limit of turns to reach end of the port holder shall be dependent on the thread and counter-threads in port holder. Further, in the present invention, the internal diameter of D55 is less than the internal diameter of D70.

[0059] Referring to Figure 8, a front view of the port attachment with flared end portion (D55) of the bass port attachment assembly for a sound system according to an embodiment is depicted. The port attachment (4) is of hollow cylindrical shape having a plurality of internal spokes (10) to facilitate rotational motion of said port attachment (3) into said port holder (2).

[0060] Referring to Figure 9, a side view of the port adjusting tool of bass port attachment assembly for a sound system according to an embodiment is depicted. The port adjusting tool (5) has a rod structure (11) with a spoke structure (12) provided at the one end of said rod structure (11). The spoke structure (12) has a cavity (13) (shown in Figure 10) provided therein. The cavity (13) of the said port adjusting tool (5) gets detachably engaged with plurality of internal spokes (9,10) of said port attachment (3,4 ) and facilitates rotational motion of said a port attachment (3,4) into said port holder (2) providing a secured connection between said port holder (2) and the port attachment (3, 4) thereby adjusting the bass port parameter of the sound system (1) as per user preference. The port attachment (3,4) is attached to said port holder (2) at different positions, through start till end, thus adjusting the bass port parameter to fine tune the acoustic of the sound system (1). The port attachment (3, 4) gets attached to said port holder (2) in complete 5 turns before reaching the end of the port holder (2).

[0061] Referring to Figure 10, a front view of the port adjusting tool attached to the port attachment of bass port attachment assembly for a sound system according to an embodiment is depicted. The port adjusting tool (5) has a rod structure (11) with a spoke structure (12). The spoke structure (12) has a cavity (13) provided therein to engage with plurality of internal spokes (9,10) of said port attachment (3,4) to facilitate rotational motion of said port attachment (3) into said port holder (2).

[0062] EXAMPLE 1 Working of the invention

[0063] The present invention provides a field replicable and adjustable bass port attachment assembly for a sound system, which is economical and highly flexible, simultaneously providing more accurate audio tonal quality as per user requirement.

[0064] The port holder (2) is adapted to be secured to a main speaker enclosure (6) provided therein of said sound system (1). The counter thread (8) of a port attachment (3, 4) and an internal thread (7) of said port holder (2) gets rotatably engaged with each other through said port attachment tool (5) so as to provide a secured connection between said port holder (2) and said port attachment (3, 4) to adjust the bass port parameter of the sound system (1) as per user preference. The port adjusting tool (5) has a rod structure (11) with a spoke structure (12) provided at the one end of said rod structure (11). The spoke structure (12) has a cavity (13) provided therein. The cavity (13) of said port adjusting tool (5) gets detachably engaged with a plurality of internal spokes (9, 10) of said port attachment (3, 4) and facilitates the rotational motion of said port attachment

[0065] (3,4) into said port holder (2)

[0066] The port attachment (3, 4) is attached to said port holder (2) at different positions, viz. anywhere from start till end, thus adjusting the bass port parameter to fine tune the acoustic of the sound system (1). The port attachment (3, 4) gets attached to said port holder (2) in complete 5 turns before reaching the end of the port holder (2).

[0067] The sound system (1) is placed facing a foam padded wall with 4 ft of distance, to minimize the reflection being picked by the microphone placed close to the woofer. Using a signal generator and amplifier the speaker was fed with the sin wave audio signals and the microphone was used to capture the sound. The readings were then analyzed for any differences in the frequency when said port attachment assembly is used in the different positions.

[0068] To establish the effect of the port attachment assembly, a reading without any port attachment assembly i.e. when the placeholder was sealed was taken as a reference for the enclosure and compared with the port attachment assembly setup, which includes both said port attachment i.e. port attachment (3) without flared mouth D70 and port attachment (4) with flared mouth D55. The port attachment (3, 4) is placed at three different position start (0%), middle (50%) and end (100%) adjusting the bass port parameter to fine tune the acoustic of the sound system (1). The port attachment (3, 4) gets attached to said port holder (2) in complete 5 turns before reaching the end of the port holder (2).

[0069] In total, 7 states frequency comparison of the port attachment assembly were recorded i.e. a reading without any port attachment assembly as reference (shown in Figure 11) and with port attachment (3, 4).

[0070] The frequency comparison reading without any port attachment assembly and with the port attachment (3) i.e. port attachment without flared mouth (D70) placed in the port holder (2) at three different positions start 0%, middle 50%, and at end D70 at 100% is compared and shown in Figure 12.

[0071] The frequency comparison reading without any port attachment assembly and with the port attachment (4) i.e. port attachment with flared mouth (D55) placed in the port holder (2) at three different positions start 0%, middle 50%, and at end (D55) at 100% is compared and shown in Figure 13.

[0072] For every state, the frequency domain was plotted from 15 Hz to 120Hz with increments of 1Hz. Hence, using the values the readings of the relative gain of each both port attachment and the position is calculated. A relative gain is the difference in readings between the sealed case and when the port attachments are added shown as a percentage. The gain in the percentage when port attachment (3,4) are adjusted at different position such as start 0%, middle 50%, and at end at 100% and a range of negative gain, where the frequencies are subdued are shown in Figure 14, Figure 15 and combination of both port attachment (3,4) is shown in Figure 16. A negative gain is when the sealed case reading is higher than the reading of the port attachments. The percentage is in negative. The frequency ranges that have a positive percentage change (shown in Figure 14, Figure 15, and Figure 16) indicates a boost in frequencies.

[0073] Both port attachments (3, 4) provides a different frequency response, further it is noted that adjusting the depth of the port attachment (3, 4) by turning the port attachment (3, 4) through the port holder (2) changes the frequency response and the bandwidth of the boost of the sound system (1). The greater number of turns of port attachment (3, 4) leads to a lower frequency range.

[0074] Frequency bandwidth of the port assembly is adjustable by turning the port attachment (3,4) from the start position to the end is shown in Table 1 and the Frequency band that has negative gain due to the port attachment (3,4) is shown in Table 2.

[0075] Table 1

[0076] Table 2

[0077] Therefore, the present invention provides a field replicable and adjustable bass port attachment assembly for a sound system, that changes the acoustic response of the sound system which is economical and highly flexible, simultaneously providing more accurate audio tonal quality as per user preference.

[0078] Many modifications and other embodiments of the invention set forth herein will readily occur to one skilled in the art to which the invention pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the invention is not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

[0079] The foregoing description of embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the invention. The embodiments were chosen and described in order to explain the principals of the invention and its practical application to enable one skilled in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated.

Claims

CLAIMS im:

1. A field replicable and adjustable bass port attachment assembly for sound system (1) comprising: a port holder (2); a port attachment (3, 4); and a port attachment tool (5); wherein: said port holder (2) is adapted to be secured to a main speaker enclosure (6) of said sound system (1); said port holder (2) has an internal thread (7) on internal portion; said port attachment (3, 4) has a counter thread (8) on the outer portion of said port attachment (3, 4); and said internal thread (7) and said counter thread (8) are rotatably engaged with each other through said port attachment tool (5) so as to provide a secured connection between said port holder (2) and said port attachment (3, 4) to adjust the bass port parameter as per user preference.

2. The field replicable and adjustable bass port attachment assembly for sound system (1) as claimed in claim 1, wherein said port holder (2) is in a hollow cylindrical configuration with its outer mouth having a flared shape structure.

3. The field replicable and adjustable bass port attachment assembly for sound system (1) as claimed in claim 1, wherein said port holder (2) is of a larger diameter than said port attachment (3, 4).

4. The field replicable and adjustable bass port attachment assembly for sound system (1) as claimed in claim 1, wherein said port attachment (3) has a plurality of internal spokes (9) to facilitate rotational motion of said port attachment (3) into said port holder (2).

5. The field replicable and adjustable bass port attachment assembly for sound system (1) as claimed in claim 1, wherein said port attachment (4) is in a hollow cylindrical configuration with its outer mouth having a flared shaped structure.

6. The field replicable and adjustable bass port attachment assembly for sound system (1) as claimed in claim 5, wherein said port attachment (4) has a plurality of internal spokes (10) to facilitate rotational motion of said port attachment (4) into said port holder (2).

7. The field replicable and adjustable bass port attachment assembly for sound system (1) as claimed in claim 1, wherein said a port adjusting tool (5) has a rod structure (11) with a spoke structure (12) provided at one end of said a rod structure (11).

8. The field replicable and adjustable bass port attachment assembly for sound system (1) as claimed in claim 7, wherein said spoke structure (12) has a cavity (13) provided therein to engage with plurality of internal spokes (9, 10) of said port attachment (3, 4) to facilitate rotational motion of said a port attachment (3, 4) into said port holder (2).

9. The field replicable and adjustable bass port attachment assembly for sound system (1) as claimed in claim 1, said port attachment (3, 4) is configured to attach to said port holder(2) at different positions including but not limited to start, middle and end adjusting the bass port parameter to fine tune the acoustic of the sound system (1) as per user preference.

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