The Programme Sub is a bass reflex subwoofer designed to compliment the full range models in the Programme series providing low frequency reinforcement.
该 方案小组 是一个低音反射低音炮设计，赞扬该方案提供低频加固系列全系列车型中。
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The EVP-18 SUB is a passive bass reflex subwoofer in a lightweight and compact rectangular enclosure designed for use in portable live sound reinforcement and mobile DJ applications.