强声换能器结构与实验

Design and experiments of strong acoustic transducer

相比于其他形式的换能器,电磁式强声换能器具有声压级高和频响范围宽的特点,因此,采用电磁式强声换能器作为声单元是很好的选择。电磁式强声换能器主要包含磁回路、振膜与音圈构成的振膜部件以及相位塞,可以将声波集中到一处,使声音更大,传播距离更远。设计的强声动圈换能器频响范围200~6 000 Hz,灵敏度120 d B@1 m,1 W,最大声压级138 d B@1 m,100 W,重量3.1 kg。

Compared with other forms of transducers, electromagnetic strong acoustic transducer has a high sound pressure level and a wide frequency response range. Therefore, electromagnetic strong acoustic transducer is a good choice. Electro- magnetic strong acoustic transducer mainly consists of magnetic circuit, diaphragm and voice coil, phase plug which can con- centrate sound wave in one point, making the sound stronger, spreading further. Frequency range of our designed strong a- coustic transducer is 200-6 000 Hz, sensitivity is 120 dB@ 1 m, 1 W, maximum SPL is 138 dB@1 m, 100 W, weight is 3.1 kg.