These speakers feature the new multicellular horn tweeters/squawkers to reproduce a wide sound.
Tweeter SPL* switch is used for preventing howling. *SPL: Sound Pressure Level
Woofers use highly reliable paper cone made in Japan to obtain high quality sound.

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Multicellular horn(CSV-900)

Multicellular horn(CSV-450)

Sound pressure level switch

Highly reliable paper cone Made in Japan