NEW ! LASE Replacement For Yorkville 18ND063-8 & 7465 Neodymium 18" Speaker Very high efficiency and extended linearity are special features of LASE 18ND063-8 bass transducer. Efficient heat dissipation is ensured by a radiator that is part of the basket design. The aluminum voice coil provides a properly aligned Q factor and high sensitivity. A specially designed shallow triple-roll surround guarantees low midrange distortion, and a fiberglass former voice coil, polycotton suspensions, and treated cone contribute to the LASE 18ND063-8 very high power handling. When mounted in compact size bass reflex enclosures, the good combination of short voice coil, very low mass, and suspension control makes the LASE18ND063-8 an excellent choice for high power, 2-way satellite applications. The LASE18ND063-8 is a popular replacement speaker for EAW, Yorkville, Sonic, Martin Audio, and other subwoofer speaker systems. Highlights :Professional/ Concert Touring Bass Driver.4" Edgewound Aluminum voice coil on a fiber glass Former1200W (RMS) (2400 watt continuous program) power handlingHigh Sensitivity and low distortionShaped shallow triple-roll damped surround.Primarily designed to be horn loaded in medium and long throw system. Specifications :Nominal Diameter : 18"Power Handling : 1200 W (rms)Power Handling : 2400 W (max).Impedance : 4 ohm.Frequency Response : 35-1KHZ .Sensitivity : 98 db2.83V/1mXmax : 9mmVoice Coil Diameter : 4"Voice Coil Former : FiberglassVoice Coil Wire : High-Temp Copper wireWeight : 20 lbs (9.07 kgm)Shipping Weight : 22.8 lbs(10.34 kgm)Shipping Dimensions : L 20" x W 20" x H 10.5" (508mm x 508mm x 266.7mm).Thiele - small parameters:RESONANCE FREQUENCY (FS) : 31 HzDC RESISTANCE (RE) : 5.10 ohmMECHANICAL FACTOR : 4.2 QmsELECTRICAL FACTOR (QES) : 0.27 QesTOTAL FACTOR : 0.26 Qts BL FACTOR (BL) : 28T x mEFFECTIVE MOVING MASS (MMS) : 211 gEQUIVALENT CAS AIR LOADED (VAS) : 8.9 litersEFFECTIVE PISTON AREA (SD) : 1210cm2MAX. LINEAR EXCURSION (XMAX) : 9 mmVOICE COIL INDUCTANCE @ 1KHZ (LE1K) : 1.7 mHHALF-SPACE EFFICENCY (EFF) : 3.01% FREE SHIPPING ONLY In the Lower 48 StatesMost Orders Placed Before 2PM and Paid thru' PayPal Are Shipped The Same Day; Monday to Friday. PLEASE NOTE: ITEMS SHIPPED OUTSIDE OF THE CONTINENTAL U.S. (ALASKA, HAWAII, & PUERTO RICO) WILL BE SUBJECT TO AN ADDITIONAL SHIPPING SURCHARGE OF $20 FOR EACH ITEM. THE AMOUNT WILL BE INVOICED TO YOU VIA PAYPAL AFTER PURCHASE. IF YOU HAVE ANY OTHER QUESTIONS, PLEASE LET US KNOW.POR FAVOR TOME EN CUENTA: ARTÍCULOS ENVIADOS FUERA DE LOS ESTADOS UNIDOS CONTINENTALES (ALASKA, HAWAII Y PUERTO RICO) ESTARÁN SUJETOS A UN RECARGO DE ENVÍO ADICIONAL DE $ 20 POR CADA ARTÍCULO. LA CANTIDAD SE LE FACTURARÁ A TRAVÉS DE PAYPAL DESPUÉS DE LA COMPRA. SI TIENE ALGUNA OTRA PREGUNTA, POR FAVOR DEJANOS SABER.