CPC H04R 9/063 (2013.01) [H04R 7/20 (2013.01); H04R 7/04 (2013.01); H04R 7/16 (2013.01); H04R 9/025 (2013.01); H04R 2205/022 (2013.01); H04R 2209/027 (2013.01); H04R 2307/027 (2013.01)] | 10 Claims |
1. A speaker device comprising two membranes facing each other, and two drive units, each arranged for driving one of the two membranes in opposite direction in operation,
the speaker device further comprising
a vented frame element and a closed frame element, which are positioned outward on either side of the two membranes, and
at least one bellows element connected on a first side to the membrane which is positioned closest to the closed frame element, and connected on a second side to the closed frame element.
|