Speaker and speaker system

摘要

PCT No. PCT/JP80/00275 Sec. 371 Date Jul. 9, 1981 Sec. 102(e) Date Jul. 9, 1981 PCT Filed Nov. 6, 1980 PCT Pub. No. WO81/01492 PCT Pub. Date May 28, 1981.A speaker in which a voice coil bobbin (4) is connected through a mechanical filter to vibrating members (11, 14) for limiting the reproducing frequency band in predetermined range by the mechanical filter, and a speaker system employing the speaker. A pneumatic suspension V is used as the mechanical filter to eliminate the variations in the reproducing frequency band even for long term usage.