JBL F18S From the
18” Compact Subwoofer. 2269H 18” Differential Drive. Attachment Plates Included As Standard For Stacked F18S Plus F12 Or F15 Configurations. Massive Linear Excursion Capability (3.5” Peak-to-peak). Reverse-cardioid Arrayable (front NL4). Frequency Response 32.5Hz-1.7kHz (±3dB). Sensitivity: 96dB. Power Rating (cont) 2000W.