| 摘要 |
<p>At least a part of the baffle (1) provided with loudspeakers (2) includes the tank (3) to be filled with a liquid, gas, loose solid material or their combination. Filling and discharging of the tank (3) enables the baffle (1) to change its weight and rigidity. The baffle is easy to handle when transported while during operation at a working place it provides high-fidelity reproduction due to the increased weight and rigidity. The tank (3) can be conveniently designed as a cavity between the outside (4) and inside (5) walls of the baffle (1). The opening with a closure (6) on the outside wall (4) is used for filling and discharging of the tank. The tank (3) can be filled with a porous spongy material, e.g. plastic foam. Walls of the baffle (1) can be manufactured of a flexible, pliable or elastic material.</p> |
