DE202007003417U1 - Push-pull loudspeaker box for use in e.g. musical event, has woofers which operate opposite to one another, where acoustic pressure from woofers pitches commonly against sound diverting unit between loudspeakers - Google Patents

Abstract

The box has two woofers which operate opposite to one another. The acoustic pressure from the woofers pitches commonly against a sound diverting unit (7) between the woofers. The unit diverts the sound upwards and downwards. The sound of both woofers is guided above and below. The acoustic pressure is amplified by an acoustic unit (9) and a trapezoid (8). The rise of pressure occurs between a base plate (1) and a bevel (12), and between a cover plate (2) and the bevel.

Description

Horn Loaded Bass loudspeaker boxes with a single folded horn are currently common construction methods. Performance boxes are big and heavy. At concerts and major music events are to transport enormous weights and volumes.

Of the in claim 1 protection invention is based on the problem to create a loudspeaker box, which is opposite to a usual one Horn-loaded bass speaker box with comparable speaker power a much greater sound pressure achieved, and yet smaller in size and weight is dimensioned. This is based on the further development of a horn-loaded Speaker system.

This Problem is solved with the features listed in the protection claim 1.

With the invention is achieved, the loudspeaker boxes for the professional sector despite higher sound pressure smaller and lighter, and so is the transport to Event cheaper. Finally, the production of box systems is cheaper.

An embodiment of the invention will be described with reference to 1 to 2 explained. Show it:

1 Side view (A) and top view (B) of the box body

2 Three-dimensional view of the box

1 shows the side view (A), consisting of the outer housing with the bottom plate 1 , the cover plate 2 , the back wall 3 and the front cover 4 ,

At the partition 5 is a speaker 18 '' , 800 watts, 8 ohms mounted. This partition is fitting between the bottom plate 1 , the cover plate 2 and the side walls 10 and 11 incorporated. At the partition 6 is a speaker 15 '' , 800 watts, 8 ohms mounted. To ensure a balance between the two speakers, this must be smaller from the outer diameter. The partition 6 has a lower height, because of the increased sound pressure on the subsequent slopes 12 is derived. This partition 6 is therefore only on the side walls 10 and 11 attached. At the partition 5 are in the lower area to the bottom plate 1 , both in the upper area to the cover plate 2 the sound diverting elements 7 assembled. These sound diverting elements have the task of redirecting the sound of both loudspeakers above and below the loudspeakers and directing them into the simply folded bass horn, which is located in the front area. In the middle of the housing are two Trapeze for further sound conduction 8th attached to the side walls. Between the two loudspeakers, which work against each other, is the acoustic element to build up the pressure 9 aligned. The acoustic element is chamfered alongside, that is, the sound pressure of the larger speaker is about this and the Schallumleitelementen 7 led to the outlet. This acoustic element leads through the trapeze to the side wall 10 and 11 , Between the partition 6 and front cover 4 There are two slopes 12 , which guide the amplified and concentrated sound pressure through the simply folded bass horn. The simply folded bass horn results from the slope 12 and the bottom plate 1 , as well as from the slope 12 and the cover plate 2 ,

The both speakers need have an identical impedance and load capacity, otherwise it to destruction the less resilient speaker would come.

In the plan view (B) is the outer housing with the side wall 10 , the side wall 11 , the back wall 3 and the front cover 4 visible, noticeable. Between the two speakers on the partitions 5 and 6 are mounted, is the acoustic element 9 attached. The acoustic element leads through the trapeze 8th to the side wall 10 and 11 ,

In the 2 is shown a three-dimensional view of the housing.

Claims (9)

Push-pull loudspeaker box with two loudspeakers, sound diverting elements and simply folded bass horn is characterized by the fact that two bass loudspeakers work against each other and their sound pressure together against a sound diverting element "between" the loudspeakers 7 toss. The Schallumleitelement has the task to redirect the sound up and down and lead into the simply folded bass horn. The sound of both loudspeakers is guided above and below the loudspeakers. By the arrangement of the acoustic element 9 and the trapeze 8th the sound pressure is increased enormously. The exit of the sound pressure occurs between the bottom plate 1 and a slope 12 , as well as between the cover plate 2 and the second slope 12 , Loudspeaker box according to claim 1, characterized in that the box housing made of glued wood (multiplex) at least 18 mm, a maximum of 25 mm. Box housing consisting of: base plate 1 cover plate 2 rear wall 3 front cover 4 Side wall 10 Side wall 11 partition wall 5 partition wall 6 bevel 12 Loudspeaker box according to one of the preceding claims, characterized in that two loudspeakers mounted on the partition wall 5 and on the partition 6 to work against each other. At the partition 5 is the larger speaker and the partition 6 the small construction speaker. Loudspeaker box according to one of the preceding claims, characterized in that between the two speakers a trapezoid 8th located on the side wall 10 is mounted, and a trapeze 8th is located on the side wall 11 , The Trapeze are made of glued wood (multiplex) with the external dimensions of about 420 mm × 120 mm × 120 mm. Loudspeaker box according to one of the preceding claims, characterized in that between the loudspeaker boxes and the trapezoids 8th the acoustic element 9 located. The acoustic element made of glued wood (multiplex) has a thickness of approx. 20 mm and is provided on both sides with a chamfer of approx. 45 °. With the front surfaces leads the acoustic element 9 through the trapeze 8th to the side walls 10 and 11 , Loudspeaker box according to one of the preceding claims, characterized in that between the partition wall 5 and the partition 6 two sound diverting elements 7 are located. These solid wood diverting elements in a triangular design have outside dimensions of approx. 100 mm × 100 mm to 120 mm × 120 mm. A sound redirecting element 7 is in the lower area between base plate 1 and partition 5 assembled. The lateral boundary is the side wall 10 and the side wall 11 , The second sound deflecting element 7 is in the upper area between cover plate 2 and partition 5 assembled. The lateral boundary is the side wall 10 and the side wall 11 , Loudspeaker box according to one of the preceding claims, characterized in that the partition wall 6 to which the smaller-size speaker is mounted, to the bottom plate 1 and to the cover plate 2 is open. This is necessary to direct the bundled and amplified sound pressure to the outside. Loudspeaker box according to one of the preceding claims, characterized in that the connection between the partition wall 6 and front cover 4 with a slope 12 in the lower area and a slope 12 connected in the upper area. These bevels of glued wood (multiplex) extend laterally to the side wall 10 and to the side wall 11 , Between a slope 12 and the bottom plate 1 results structurally a simply folded bass horn. Between the second slope 12 and the cover plate 2 also results in a simply folded bass horn. Loudspeaker box according to one of the preceding claims, characterized marked that for the bass range, both for the middle and high frequencies are applicable.