NEW ! LASE LF18-3600 18" Low Frequency Woofer Speaker with 4.5" Voice Coil. LASE LF18-3600 an 18" subwoofer speaker intended for use in applications where incredible power handling, long excursion, and perfect control are required. It is ideal for high quality professional bass reflex and bass-horn speaker systems.The LASE LF18-3600 uses a fiber-loaded cone assembly along with a high excursion triple roll, constant geometry surround, thereby providing a much smoother transition for the moving mass as it reaches its maximum excursion limits. Also included is a forced air venting system for reduced power compression. The LASE LF18-3600 is a popular replacement speaker for EAW, Yorkville, Sonic, Martin Audio, and other subwoofer speaker systems. Highlights: High BL low frequency of 30.5T-M for a strong controlled deep,punchy bass 4.5" diameter inside/outside copper voice coil on fiberglass former Forced air ventilation and 15 mm top plate for minimum power compression Dual spider design with silicon-based damping control Triple roll surround and corrugated straight cone geometry Good sensitivity, low distortion, extraordinary definition Product Specifications: Nominal Diameter: 18" Power Handling (RMS): 1800 Watts Power Handling (max): 3000 Watts Impedance: 8 ohms Frequency Response: 30Hz to 1,000 KHz Sensitivity: 97.5 dB 2.83V/1m Xmax : 13.5mm Voice Coil Diameter: 4.5" Thiele&Small Parameter: FS: 41 HZ Re: 5.5 ohm Qms: 9.7 Qes: 0.41 Qts: 0.37 Mms: 247.4G BL: 29.3T-M Sd: 1216 cm2 Vas: 124.4 L Weight : 42.2 Lbs(19.14Kgms) Shipping Dimensions : 20.5" x20.5" x 17.5"(533.4mm x 533.4mm x 457.2mm)