Flat panel sound radiator with fire protective back box

A fire protected flat panel radiator assembly comprising:

• a flat panel radiator having a frame supporting a diaphragm;
• a transducer operatively coupled to the diaphragm for imparting to the diaphragm vibratory motion corresponding to an audio program to be reproduced by the diaphragm;
• and
• a fire protective back box mounted to the radiator, the back box covering and substantially enclosing the diaphragm,
• wherein the flat panel radiator includes a bridge and the back box comprises a first shell mounted on one side of the bridge, the first shell covering a first portion the diaphragm and a second shell mounted on the other side of the bridge, the second shell covering a second portion of the diaphragm, and
• wherein at least one of the first and second shells is formed with a cut-out portion and a porous panel of sheet material mounted in the cut-out portion.

A fire protected sound radiator assembly comprising:

• a flat panel radiator having a frame supporting a diaphragm;
• a bridge spanning and overlying the diaphragm, the bridge supporting electronic components;
• a transducer operatively coupled to the diaphragm;
• a first shell mounted to the radiator on one side of the bridge covering and substantially enclosing a first portion of the diaphragm;
• a second shell mounted to the radiator on the other side of the bridge covering and substantially enclosing a second portion of the diaphragm, the bridge and the first and second shells together form a back box that encloses and protects at least the diaphragm from fire;
• a cut-out portion in each of the first and second shells;
• and
• an air pervious panel mounted in and spanning each cut-out portion to permit the flow or of air in and out of said the back box.

A fire protective back box for mounting to the back of a sound radiator assembly to protect components of the sound radiator assembly from fire hazards, the back box comprising:

• a body configured to be received on the back of the sound radiator assembly substantially covering and enclosing the components of the sound radiator susceptible to fire;
• an opening formed in said body to permit the flow of air into and out of said the back box;
• and
• an air pervious panel mounted in and substantially spanning said the opening.