Portable speaker assembly

Abstract

A portable speaker assembly having a first driver coupled to a first portion of a telescoping enclosure and a second driver coupled to a second portion of the telescoping enclosure. The telescoping enclosure is movable between a first position and a second position and has an intermediate portion extending outwardly from the first portion and having a telescopically nesting engagement with a second portion. The intermediate portion is able to move telescopically relative to the second portion along a longitudinal axis of the enclosure. The second portion has at least one predetermined void adjacent to the telescopic connection of the intermediate portion with the second portion.

1 . A portable speaker assembly comprising: 
 (a) a first and second driver;    (b) a telescoping enclosure movable between a first position and a second position, the telescoping enclosure comprising a first portion, an intermediate portion extending outwardly from the first portion and having a telescopically nesting engagement with a second portion, the intermediate portion being able to move telescopically relative to the second portion along a longitudinal axis of the enclosure,    (c) the first driver being coupled to the first portion and the second driver being coupled to the second portion; and    (d) the second portion having at least one predetermined void adjacent to the telescopic connection of the intermediate portion with the second portion.    
   
   
       2 . The assembly according to  claim 1 , wherein the at least one predetermined void is substantially filled with an air permeable foam material.  
   
   
       4 . The assembly according to  claim 1 , wherein the first and second drivers are oriented such that their primary sound generation direction is substantially perpendicular to the longitudinal axis.  
   
   
       5 . The assembly according to  claim 1 , wherein controls are provided on the intermediate section, the controls being at least one selected from the group consisting of: volume, tone, power on/off and playback control.  
   
   
       6 . The assembly according to  claim 1 , wherein the second portion has a port for improving the frequency response of the second portion.  
   
   
       7 . The assembly according to  claim 1 , wherein the intermediate portion has a further port for improving the frequency response of the first portion.  
   
   
       8 . The assembly according to  claim 1 , wherein the second portion has an opening in a side wall through which the intermediate portion passes, the at least one predetermined void being on the periphery of the opening.  
   
   
       9 . The assembly of  claim 1 , wherein the intermediate portion is substantially hollow and is acoustically connected to the first portion and the second portion.  
   
   
       10 . The assembly as claimed in  claim 8 , wherein the opening area is greater than the intermediate portion cross-sectional area in a plane transverse to the longitudinal axis.  
   
   
       11 . The assembly as claimed in  claim 10 , wherein the opening area is greater than the intermediate cross-sectional area by the at least one void.  
   
   
       12 . The assembly as claimed in  claim 1 , wherein the location, size, shape and number of the at least one void is controlled to minimize the effect on the telescoping enclosure acoustic response of the at least one void.  
   
   
       13 . The assembly as claimed in  claim 1 , wherein the location, size, shape and number of the at least one void is controlled to enhance the telescoping enclosure acoustic response.  
   
   
       14 . The assembly as claimed in  claim 1 , wherein there is no seal between the intermediate portion and the second portion.  
   
   
       15 . The assembly as claimed in  claim 14 , wherein the at least one void is for reducing friction and rubbing between the second portion and the intermediate portion when the enclosure is extended or retracted.  
   
   
       16 . The assembly as claimed in  claim 9 , wherein the substantially hollow intermediate portion includes a battery compartment.  
   
   
       17 . The assembly as claimed in  claim 1 , further including an AM/FM tuner.  
   
   
       18 . A method for providing a balanced sound for substantially the full frequency range by allowing the communication of air between an interior of an enclosure and ambient surroundings.  
   
   
       19 . The method as claimed in  claim 18 , wherein the air is passed through air permeable foam material.