| 摘要 |
The loudspeaker housing is provided by a vertical column with a prismatic cross-section, for providing a cylindrical sound radiation characteristic, with the middle tone loudspeaker unit supported vertically infront of the low tone loudspeaker line and rotatable about a vertical axis through 360 degrees for selection of the optimal hearing angle, or rotation into a closed position, in which the loudspeakers are concealed.
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