Techniques for concentric loading loudspeaker

1. A loudspeaker comprising:

an outer tubular section;

an inner tubular section at least partially disposed concentrically within the outer tubular section;

a driver disposed in the inner tubular section;

a sound deflector disposed at a first end of the outer tubular section;

a void defined collectively by a space between a first end of the inner tubular section within the outer tubular section and the sound deflector, and a space between an outer portion of the inner tubular section and an inner portion of the outer tubular section,

wherein sound produced by the driver passes through the void via the space between the first end of the inner tubular section within the outer tubular section and the sound deflector, and then via the space between the outer portion of the inner tubular section and the inner portion of the outer tubular section.

2. The loudspeaker of claim 1 , further comprising an exit vent disposed at a second end of the outer tubular section and defined by the outer portion of the inner tubular section and the inner portion of the outer tubular section,

wherein the sound passing through the space between the outer portion of the inner tubular section and the inner portion of the outer tubular section exits the loudspeaker through the exit vent.

3. The loudspeaker of claim 2 ,

wherein the driver is disposed at a second end of the inner tubular section, and

wherein the exit vent at least partially surrounds the driver.

4. The loudspeaker of claim 3 , wherein the driver and the exit vent face a direction of a listener.

5. The loudspeaker of claim 3 , wherein the driver and the exit vent face downward.

6. The loudspeaker of claim 1 , wherein the sound deflector comprises a structure protruding into the void configured to direct the sound from the space between the first end of the inner tubular section within the outer tubular section and the sound deflector, to the space between the outer portion of the inner tubular section and the inner portion of the outer tubular section.

7. The loudspeaker of claim 1 , further comprising a constriction in the void along a path the sound passes.

8. The loudspeaker of claim 7 , wherein the constriction is disposed at the first end of the inner tubular section.

9. The loudspeaker of claim 8 , wherein the constriction comprises a tapered port.

10. The loudspeaker of claim 7 , wherein the constriction is at least one of formed by the space between the outer portion of the inner tubular section and the inner portion of the outer tubular section, or disposed in the space between the outer portion of the inner tubular section and the inner portion of the outer tubular section.

11. The loudspeaker of claim 1 ,

wherein the driver is disposed within the inner tubular section,

wherein a baffle is disposed at a second end of the inner tubular section, and

wherein the exit vent at least partially surrounds the baffle.

12. The loudspeaker of claim 11 , wherein the baffle comprises a port.

13. The loudspeaker of claim 1 , further comprising another outer tubular section,

wherein the outer tubular section is at least partially disposed concentrically within the other outer tubular section.

14. The loudspeaker of claim 1 , wherein the outer tubular section and the inner tubular section comprise a same cross-sectional shape.

15. The loudspeaker of claim 1 , wherein the outer tubular section and the inner tubular section comprise a different cross-sectional shape.

16. The loudspeaker of claim 1 , wherein the driver is configured to produce a full audio range.

17. The loudspeaker of claim 1 , wherein the driver is configured to produce a low frequency audio range.

18. The loudspeaker of claim 1 , wherein the inner tubular section is centered in the outer tubular section.

19. The loudspeaker of claim 1 , wherein the inner tubular section is offset from center in the outer tubular section.