| 摘要 |
The invention concerns an electro-acoustic converter with a converter board (4). A front and rear space (7, 8) are formed by the converter board. To raise the lower limit frequency, the front and rear spaces are coupled to each other by a channel (9, 10, 11). This channel is formed in the edge region of the bearing of the converter board by holes in the housing parts, and has no external opening. <IMAGE>
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