JBL MRX-528S ตู้ลำโพงซับ 18 นิ้วคู่ Power Rating : 1000 W / 2000 W / 4000 W Frequency Range : 35 Hz - 250 Hz
MRX528S Dual 18 in. Bass-Reflex Subwoofer, High Power, Vertical Orientation for Stacking Full-Range Systems
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