DD Audio 615e D2 15" basse like European! DD Audio and European distributor AI Group developed together a special model subwoofer to European market only. One of a kind subwoofer that has high sensitivity to give out more bass per every single watt used. Unlike other high sensitivity subs, 600e subs have also LOW FS to give REAL BASS and not only high frequency burps at the competitions. And of course with a price tag that is suitable for everyone. Newly designed T yoke has