{"product_id":"rcf-lf18n408-18-power-1500w-rms-3000w-prog-sensitivity-97-db-freq-range-25-1000-hz","title":"RCF LF18N408 18\" Power: 1500W rms, 3000W prog. Sensitivity: 97 dB Freq. Range 25-1000 Hz","description":"\u003ch2\u003eRCF LF18N408 18\" Power: 1500W rms, 3000W prog. Sensitivity: 97 dB Freq. Range 25-1000 Hz\u003c\/h2\u003e\n\u003cp\u003eThe LF18N408 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 LF18N408 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 optimized T-pole together with doublendemodulating rings are designed to reduce flux modulations with benefits on harmonic and intermodulation distortions while improving the transient response. 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 dB Sensitivity\u003c\/li\u003e\n\u003cli\u003e25 Hz - 1 kHz 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\u003cli\u003eDouble aluminum demodulation rings\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: 25–1000 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: 38 mm \/ 1.5 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\u003eDemodulation Rings Material: Aluminum\u003c\/li\u003e\n\u003cli\u003eNumber of Demodulation Rings: 2\u003c\/li\u003e\n\u003cli\u003eSpider: Single\u003c\/li\u003e\n\u003cli\u003eDemodulation Ring: Yes\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): 4.30 ohm\u003c\/li\u003e\n\u003cli\u003eMechanical Factor (Qms): 3.60\u003c\/li\u003e\n\u003cli\u003eElectrical Factor (Qes): 0.36\u003c\/li\u003e\n\u003cli\u003eTotal Factor (Qts): 0.33\u003c\/li\u003e\n\u003cli\u003eBL Factor (Bl): 25.70 T × m\u003c\/li\u003e\n\u003cli\u003eEffective Moving Mass (Mms): 284.0 g\u003c\/li\u003e\n\u003cli\u003eEquivalent Cas Air Loaded (Vas): 193.0 liters\u003c\/li\u003e\n\u003cli\u003eEffective Piston Area (Sd): 0.122 m²\u003c\/li\u003e\n\u003cli\u003eMax. Linear Excursion (Xmax): 15 mm\u003c\/li\u003e\n\u003cli\u003eVoice Coil Inductance @ 1 kHz (Le1k): 1.56 mH\u003c\/li\u003e\n\u003cli\u003eHalf-Space Efficiency (Eff): 1.57%\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 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: 223.5 mm \/ 8.8 inches\u003c\/li\u003e\n\u003cli\u003eDiameter: 465 mm \/ 18.31 inches\u003c\/li\u003e\n\u003cli\u003eCut-Out Diameter: 423 mm \/ 16.65 inches\u003c\/li\u003e\n\u003cli\u003eWeight: 9 kg \/ 19.84 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: 270 mm \/ 10.63 inches\u003c\/li\u003e\n\u003cli\u003ePackage Width: 520 mm \/ 20.47 inches\u003c\/li\u003e\n\u003cli\u003ePackage Depth: 495 mm \/ 19.49 inches\u003c\/li\u003e\n\u003cli\u003ePackage Weight: 10.2 kg \/ 22.49 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":48653404471490,"sku":"LF18N408","price":1009.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0277\/2631\/5568\/files\/LF18N408-1.jpg?v=1787597608","url":"https:\/\/shop.solotech.com\/products\/rcf-lf18n408-18-power-1500w-rms-3000w-prog-sensitivity-97-db-freq-range-25-1000-hz","provider":"Solotech","version":"1.0","type":"link"}