Speaker cabinet enclosure and method of making same

Claim 2

A speaker cabinet enclosure including front, rear, side, base and top walls comprising in coMbination a bass reflex cabinet having an acoustic chamber and including a full range speaker unit and magnet therewith centrally mounted on the front wall, a layer of insulation mounted on the interior face of each sidewall, top wall and base of said cabinet, layers of insulation disposed above and below said speaker unit and filling substantially the volume of the chamber between the frame of the speaker unit and a plane coincident to the back end of said magnet, at least one layer of insulation abutting the rear end of said unit and extending substantially laterally and vertically of the chamber of said cabinet, and at least two patterns of apertures in said rear wall, the distribution of which is generally geometrically formed about the central axis of said speaker unit but without substantially a cylinder generated by the areal dimensions of the magnet of said speaker unit, whereby even backloading upon the cone of said speaker unit is achieved for all frequencies reproduced by said full range speaker unit.

Claim 3

The improvement of claim 1 in which said apertures are circular.

Claim 4

perforating a rear wall of another enclosure of the same size with a pattern and distribution of a plurality of apertures whose total spatial area is equivalent to the required spatial area in the first mentioned enclosure, and

Claim 5

perforating a rear wall of another enclosure of the same size with a pattern and distribution of a plurality of apertures whose total spatial area is equivalent to the required spatial area in the first mentioned enclosure, and

Claim 6

perforating a rear wall of another enclosure of the same size with a pattern and distribution of a plurality of apertures whose total spatial area is equivalent to the required spatial area in the first mentioned enclosure.

Claim 7

perforating a rear wall of another enclosure of the same size with a pattern and distribution of a plurality of apertures whose total spatial area is equivalent to the required spatial area in the first mentioned enclosure.

Claim 8

The improvement of claim 2 in which each of said apertures is of the same diameter as the other apertures.

Claim 9

changing the areal size of one or more of the apertures in said plurality by which the flattest and widest possible frequency response is obtained, a corresponding change in number of apertures being made to maintain the required spatial area developed in said forming step.

Claim 10

changing the areal size of one or more of the apertures in said plurality by which the flattest and widest possible frequency response is obtained, a corresponding change in number of apertures being made to maintain the required spatial area developed in said forming step.

Claim 11

The improvement of claim 1 in which said apertures are rectangular in nature.

Claim 12

The improvement of claim 1 in which said apertures are oval in nature.

Claim 13

The improvement of claim 1 in which said apertures are triangular in nature.

Claim 14

The improvement of claim 1 in which said apertures are square in nature.

Claim 15

An improved speaker cabinet enclosure of relatively small size and which forms a bass reflex cabinet type of enclosure, such enclosure including the combination of a full-range oval speaker unit and magnet therewith centrally mounted on the front wall of said cabinet, a layer of insulation mounted on the interior face of each wall of said cabinet, layers of insulation filling substantially the volume in the chamber above and below said magnet, such filling being limited between a plane coincident to the back end of said magnet and the frame of said speaker unit, at least one layer of insulation abutting the rear end of said unit and extending substantially laterally and vertically in the chamber of said cabinet, and patterns of apertures formed in the rear wall substantially in the upper and lower areas in said wall, the distribution of which is geometrically formed about the central axis of said speaker unit but substantially without a cylinder generated by the areal dimension of the said magnet, whereby even backloading upon the cone of said speaker unit is achieved for all frequencies reproduced by said full-range speaker unit.

Claim 16

An improved speaker cabinet enclosure of relatively small size and which forms a bass reflex cabinet type of enclosure, such enclosure including the combination of a full-range oval speaker unit and magnet therewith centrally mounted on the front wall of said cabinet, a layer of insulation mounted on the interior face of each wall of said cabinet, layers of insulation filling substantially the volume in the chamber above and below said magnet, such filling being limited between a plane coincident to the back end of said magnet and the frame of said speaker unit, at least one layer of insulation abutting the rear end of said unit and extending substantially laterally and vertically in the chamber of said cabinet, and patterns of apertures formed in the rear wall substantially in the upper and lower areas in said wall, the distribution of which is geometrically formed about the central axis of said speaker unit but substantially without a cylinder generated by the areal dimension of the said magnet, whereby even backloading upon the cone of said speaker unit is achieved for all frequencies reproduced by said full-range speaker unit.