Abstract: The present invention relates to an accelerated degradation test for testing durability of a specimen by rapidly inducing a failure or degradation rate according to use environmental factors, such as temperature and humidity, and more particularly, to an automated test device and test method for a complex accelerated degradation test, capable of various and precise accelerated degradation tests by constructing a multi-test environment in a single device and automating a process of putting pre-test specimens formed of chemical materials into a test environment, transferring the specimens to other test environments, and storing tested specimens in a storage chamber.

Abstract: A frame for a loudspeaker cabinet including a connection device for connecting to another loudspeaker cabinet, the connection device including a eyelet and a locking system, the locking system including a front leg and a back leg, a slide disposed between the two legs and configured to slide between a high position and a low position under the action of a first elastic member connected to the slide, and an actuator configured to take a pulled position and a pushed position. The locking system being configured to take a locked configuration and a cocked configuration, the locking system passing from the locked configuration to the cocked configuration by movement of the actuator and from the cocked configuration to the locked configuration by movement of the slide from the low position to the high position.

Abstract: The speaker cabinet (1) includes at least one loudspeaker (2) and at least one port (3), the port having an outlet (32) formed in a wall of the cabinet (1), an inlet (31) inside the cabinet (1), and a casing connecting the inlet (32) and the outlet (31) together, the inlet (32) of the port (3) further having at least one recess in the casing.

Abstract: A device for emitting an acoustic wave includes a flared structural piece bearing at its base an electromechanical transducer and defining at its flared end an output surface. A mechano-acoustic coupler made of one piece is a solid piece and exhibits: a first portion for mounting on the transducer, a second portion extending from the first portion up to the level of the output surface, the coupler being suspended on the structural piece at the level of the second portion and the second portion having a cross-sectional area at the level of the output surface which is strictly greater than its cross-sectional area at the level of the first portion, and a third portion extending from the second portion, where the third portion has a cross-sectional area which is smaller than the output surface, the third portion including a cross-section of greater area than the output surface.

Abstract: A method for determining the weight of a load using a hydraulic or pneumatic actuator of a lifting mechanism by increasing actuator pressure to an initial value, maintaining an actuator motion pressure until the load is lifted to a desired suspended position, adjusting the actuator pressure to a first threshold pressure, determining a first threshold pressure value for the first threshold pressure, adjusting the actuator pressure to a second threshold pressure, determining a second threshold pressure value for the second threshold pressure, and calculating based on the first and second threshold pressure values the weight of the load. The threshold pressures are determined when the static friction of the lifting mechanism is no longer able to maintain the position of the load.

Abstract: A loudspeaker cabinet (2) includes a device for mechanical connection to another loudspeaker cabinet and/or a device (8) for adjusting an angle formed between the cabinet (2) and the other cabinet. The connection device includes a mechanism for the conversion of a translational actuation control in a first direction into a translational movement of at least one first latch in a second direction different from the first direction. The angle adjustment device includes an element (8) the length of which in the operating position adjusts the angle and is determined according to the position of a rotary component (10).

Abstract: A device for emitting an acoustic wave includes a flared structural piece bearing at its base an electromechanical transducer and defining at its flared end an output surface. A mechano-acoustic coupler made of one piece is a solid piece and exhibits: a first portion for mounting on the transducer, a second portion extending from the first portion up to the level of the output surface, the coupler being suspended on the structural piece at the level of the second portion and the second portion having a cross-sectional area at the level of the output surface which is strictly greater than its cross-sectional area at the level of the first portion, and a third portion extending from the second portion, where the third portion has a cross-sectional area which is smaller than the output surface, the third portion including a cross-section of greater area than the output surface.

Abstract: A sound reproduction system includes a loudspeaker enclosure that has a first loudspeaker and a second loudspeaker which are mounted on a surface of the enclosure. The first and second loudspeakers are respectively accommodated in a first space and a second space of the enclosure, the spaces being separated by a partition and being in communication with a first port and a second port, respectively. The first and second ports are located on opposite sides of the unit formed by the first and second loudspeakers.

Abstract: A sound reproduction system includes a loudspeaker enclosure that has a first loudspeaker and a second loudspeaker which are mounted on a surface of the enclosure. The first and second loudspeakers are respectively accommodated in a first space and a second space of the enclosure, the spaces being separated by a partition and being in communication with a first port and a second port, respectively. The first and second ports are located on opposite sides of the unit formed by the first and second loudspeakers.

Abstract: The invention concerns a mobile membrane loudspeaker equipped with a partial closure optimising its radiation. The invention is characterised in that the loudspeaker with mobile diaphragm (19) attached to a rigid frame (15) defining an acoustic emission plane (P) comprises a closure (25) for only one central zone of said emission plane.

Abstract: A horn or waveguide public address unit, enabling to adapt the dispersion characteristics of the horn or waveguide. The unit is provided with at least one profiling component (21a, 21b) constituting a removable dispersion shaper, capable of being mounted on the inner wall of the horn (13) or waveguide between the throat (17) and the mouth (19) thereof.