DS18 6x9” 2-Way Component Speakers | 120W RMS - 360W Max | 4 Ohm。DS18 PRO-Z69 6 X 9 2 way mid range loud speaker with ZT69 tweeter。DS18 PRO-Z69 6 X 9 2 way mid range loud speaker with ZT69 tweeter。よろしくお願い致します。Amazon.com: DS18 PRO-ZT Pro Audio Coaxial Midrange Speakers with。