{"product_id":"rcf-lf18n405-18-power-1500w-rms-3000w-prog-sensitivity-97-db-freq-range-25-1000-hz","title":"RCF LF18N405 18\" Power: 1500W rms, 3000W prog. Sensitivity: 97 dB Freq. Range 25-1000 Hz","description":"\u003ch2\u003eRCF LF18N405 18\" Power: 1500W rms, 3000W prog. Sensitivity: 97 dB Freq. Range 25-1000 Hz\u003c\/h2\u003e\n\u003cp\u003eThe LF18N405 is an extended low frequency with high power handling , designed to provide powerful and accurate bass frequencies with low distortion, low power compression and very high SPL. The LF18N405 uses a fibre loaded cone assembly along a large triple roll surround, this combination provides remarkable strength and control. The single spider system is specifically designed with a heavy cloth which ensures excellent control during large excursions. A fully optimised T-pole design generates the minimum amount of flux modulation. The Dual-forced air venting magnetic structure system provides a very efficient voice coil ventilation to minimize the power compression.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4,0 - inch Inside\/Outside copper voice coil\u003c\/li\u003e\n\u003cli\u003e3000 Watt continuous program power handling\u003c\/li\u003e\n\u003cli\u003e97.5 dB Sensitivity\u003c\/li\u003e\n\u003cli\u003e25Hz - 1kHz Frequency range\u003c\/li\u003e\n\u003cli\u003eHypervented magnetic structure for minimum power compression\u003c\/li\u003e\n\u003cli\u003eTriple roll surround and exponential cone geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"_wdUoQG_assistantMessage\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"_wdUoQG_messageCopy _A1mksG_dilContent _pKBN-W_sportsContent\"\u003e\n\u003cp\u003e\u003cstrong\u003eGeneral Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNominal Diameter: 18 inch \/ 457 mm\u003c\/li\u003e\n\u003cli\u003eRated Impedance: 8 ohm\u003c\/li\u003e\n\u003cli\u003eProgram Power: 3000 W\u003c\/li\u003e\n\u003cli\u003ePower Handling Capacity: 1500 W\u003c\/li\u003e\n\u003cli\u003eSensitivity: 97.0 dB\u003c\/li\u003e\n\u003cli\u003eFrequency Range: 30–1000 Hz\u003c\/li\u003e\n\u003cli\u003eEffective Piston Diameter: 395 mm \/ 15.55 inch\u003c\/li\u003e\n\u003cli\u003eMax. Excursion Before Damage: 58 mm \/ 2.28 inch\u003c\/li\u003e\n\u003cli\u003eMinimum Impedance: 6.0 ohm\u003c\/li\u003e\n\u003cli\u003eVoice Coil Diameter: 4.0 inch \/ 102 mm\u003c\/li\u003e\n\u003cli\u003eVoice Coil Winding Material: Copper\u003c\/li\u003e\n\u003cli\u003eVoice Coil Length: 36 mm \/ 1.42 inch\u003c\/li\u003e\n\u003cli\u003eNumber of Layers: 2\u003c\/li\u003e\n\u003cli\u003eKind of Layers: Inside\/Outside\u003c\/li\u003e\n\u003cli\u003eTop Plate Thickness: 15 mm \/ 0.59 inch\u003c\/li\u003e\n\u003cli\u003eCone Design: Curved\u003c\/li\u003e\n\u003cli\u003eSurround Material: Polycotton\u003c\/li\u003e\n\u003cli\u003eSurround Design: Triple Roll\u003c\/li\u003e\n\u003cli\u003eMagnets: Neodymium\u003c\/li\u003e\n\u003cli\u003eHypervented Magnetic Structure: Yes\u003c\/li\u003e\n\u003cli\u003eSpider: 01\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThiele–Small Parameters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eResonance Frequency (Fs): 30 Hz\u003c\/li\u003e\n\u003cli\u003eDC Resistance (Re): 4.90 ohm\u003c\/li\u003e\n\u003cli\u003eMechanical Factor (Qms): 7.00\u003c\/li\u003e\n\u003cli\u003eElectrical Factor (Qes): 0.34\u003c\/li\u003e\n\u003cli\u003eTotal Factor (Qts): 0.32\u003c\/li\u003e\n\u003cli\u003eBL Factor (Bl): 26.50 T × m\u003c\/li\u003e\n\u003cli\u003eEffective Moving Mass (Mms): 261.0 g\u003c\/li\u003e\n\u003cli\u003eEquivalent Cas Air Loaded (Vas): 227.0 liters\u003c\/li\u003e\n\u003cli\u003eEffective Piston Area (Sd): 0.120 m²\u003c\/li\u003e\n\u003cli\u003eMax. Linear Excursion (Xmax): 14 mm\u003c\/li\u003e\n\u003cli\u003eVoice Coil Inductance @ 1 kHz (Le1k): 1.70 mH\u003c\/li\u003e\n\u003cli\u003eHalf-Space Efficiency (Eff): 1.70%\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMounting Information\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOverall Diameter: 465 mm \/ 18.31 inches\u003c\/li\u003e\n\u003cli\u003eBolt Circle Diameter: 442–447 mm \/ 17.4–17.6 inch\u003c\/li\u003e\n\u003cli\u003eBolt Hole Diameter: 7 mm \/ 0.28 inch\u003c\/li\u003e\n\u003cli\u003eFront Mount Baffle Cut-Out: 424 mm \/ 16.69 inch\u003c\/li\u003e\n\u003cli\u003eRear Mount Baffle Cut-Out: 425 mm \/ 16.73 inch\u003c\/li\u003e\n\u003cli\u003eVolume Occupied by the Driver: 5.5 liters \/ 0.22 ft³\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eStandard Compliance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSafety Agency: CE Compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSize \u0026amp; Weight\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeight: 208 mm \/ 8.19 inches\u003c\/li\u003e\n\u003cli\u003eDiameter: 465 mm \/ 18.31 inches\u003c\/li\u003e\n\u003cli\u003eWeight: 8.8 kg \/ 19.4 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eShipping Information\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePackage Height: 255 mm \/ 10.04 inches\u003c\/li\u003e\n\u003cli\u003ePackage Width: 495 mm \/ 19.49 inches\u003c\/li\u003e\n\u003cli\u003ePackage Depth: 525 mm \/ 20.67 inches\u003c\/li\u003e\n\u003cli\u003ePackage Weight: 10 kg \/ 22.05 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"RCF","offers":[{"title":"Default Title","offer_id":48653404307650,"sku":"LF18N405","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0277\/2631\/5568\/files\/LF18N405-1.jpg?v=1787597511","url":"https:\/\/shop.solotech.com\/products\/rcf-lf18n405-18-power-1500w-rms-3000w-prog-sensitivity-97-db-freq-range-25-1000-hz","provider":"Solotech","version":"1.0","type":"link"}