Title:
Loudspeaker arrangement
United States Patent 3155774
US Patent References:
Coaxial dual-unit electrodynamic loud-speaker
- - 2426948
Coaxial dual-unit electrodynamic loud-speaker
- - 2539672
Loudspeaker circuitry
- - 2832828
Co-planar loud speaker
- - 2857478
Variable dynamic infinite damping loudspeaker enclosure device
- - 2993091
Coaxial dual-unit electrodynamic loud-speaker
- - 2426948
Coaxial dual-unit electrodynamic loud-speaker
- - 2539672
Loudspeaker circuitry
- - 2832828
Co-planar loud speaker
- - 2857478
Variable dynamic infinite damping loudspeaker enclosure device
- - 2993091
Inventors:
Derek, Howell
Publication Date:
11/03/1964
View Patent Images:
Export Citation:
Assignee:
PYE LTD
Primary Class:
Other Classes:
381/99, 381/89, 381/186, 181/146
International Classes:
H04R1/22; H04R1/24; H04R1/26; H04R3/14; H04R3/12