{"product_id":"rcf-lf15x400-replacement-woofer","title":"RCF LF15X400 Replacement Woofer","description":"\u003cdiv\u003eIncredibly linear frequency response characteristics, extreme high power handling while generating the lowest harmonic distortion of any comparable 15-inch transducer within its application range. The\u003cspan style=\"font-weight: bold;\"\u003e LF15X400\u003c\/span\u003e uses a fibre loaded cone assembly along with a high excursion triple roll surround. This combination provides remarkable strength and a peak to peak maximum excursion of 52 mm. The T-pole also features RCF Precision’s spaced gap demodulation technology, progressively braking the voice coil, providing a much smoother transition for the moving mass as it reaches its maximum excursion limits. Forced air venting system.\u003c\/div\u003e \u003cdiv\u003e \u003c\/div\u003e \u003cdiv\u003e\u003cspan style=\"font-weight: bold; text-decoration: underline;\"\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e \u003cdiv\u003e \u003cul\u003e \u003cli\u003e4-inch Inside\/outside copper voice coil\u003c\/li\u003e \u003cli\u003e1600 Watt continuous program power handling\u003c\/li\u003e \u003cli\u003e97 dB Sensitivity\u003c\/li\u003e \u003cli\u003e30 Hz - 1.5 kHz Frequency range\u003c\/li\u003e \u003cli\u003eProgressive, spaced, aluminum demodulation rings\u003c\/li\u003e \u003cli\u003eForced air ventilation and 14 mm top plate for minimum power compression\u003c\/li\u003e \u003cli\u003eDual spider design with silicon based dampening control\u003c\/li\u003e \u003cli\u003eTriple-roll surround and corrugated straight cone geometry\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e \u003cdiv\u003e\u003cspan style=\"font-weight: bold; text-decoration: underline;\"\u003eSpecifications\u003c\/span\u003e\u003c\/div\u003e \u003cdiv\u003e \u003cul\u003e \u003cli\u003eNominal Diameter: 380\/15 mm\/inch\u003c\/li\u003e \u003cli\u003eRated Impedance: 8 ohm\u003c\/li\u003e \u003cli\u003eProgram Power: 1600 Watts\u003c\/li\u003e \u003cli\u003ePower handling capacity: 800 Watts\u003c\/li\u003e \u003cli\u003eSensitivity: 97 dB\u003c\/li\u003e \u003cli\u003eFrequency Range: 30 - 1500\u003c\/li\u003e \u003cli\u003eEffective Piston Diameter: 340\/13.4 mm\/inch\u003c\/li\u003e \u003cli\u003eMax Excursion Before Damage (peak to peak): 52\/2.1 mm\/inch\u003c\/li\u003e \u003cli\u003eMinimum Impedance: 6.3 ohm\u003c\/li\u003e \u003cli\u003eVoice Coil Diameter: 100\/4 mm\/inch\u003c\/li\u003e \u003cli\u003eVoice Coil Material: Copper\u003c\/li\u003e \u003cli\u003eVoice Coil Winding Depth: 23\/0.9 mm\/inch\u003c\/li\u003e \u003cli\u003eNumber of layers: 2\u003c\/li\u003e \u003cli\u003eKind of layer: inside\/outside\u003c\/li\u003e \u003cli\u003eTop Plate Thickness: 14\/0.55\u003c\/li\u003e \u003cli\u003eCone Material: No pressed pulp\u003c\/li\u003e \u003cli\u003eCone Design: Straight\u003c\/li\u003e \u003cli\u003eSurround Material: Polycotton\u003c\/li\u003e \u003cli\u003eSurround Design: Triple roll\u003c\/li\u003e \u003cli\u003eResonance frequency: Fs: 37 Hz\u003c\/li\u003e \u003cli\u003eDC resistance: Re: 5.0 ohm\u003c\/li\u003e \u003cli\u003eMechanical factor: Qms: 4.9\u003c\/li\u003e \u003cli\u003eElectrical factor: Qes: 0.26\u003c\/li\u003e \u003cli\u003eTotal factor: Qts: 0.25\u003c\/li\u003e \u003cli\u003eBL Factor: BL: 24 T · m\u003c\/li\u003e \u003cli\u003eEffective Moving Mass: Mms: 130 gr\u003c\/li\u003e \u003cli\u003eEquivalent Cas air load: Vas: 164 liters\u003c\/li\u003e \u003cli\u003eEffettive piston area: Sd: 0.091 m2\u003c\/li\u003e \u003cli\u003eMax. linear excursion (mathematical): Xmax: 8.0 mm\u003c\/li\u003e \u003cli\u003eVoice - coil inductance @ 1KHz: Le1K: 2.1 mH\u003c\/li\u003e \u003cli\u003eHalf-space efficiency: Ef: 3.08 %\u003c\/li\u003e \u003cli\u003eOverall Diameter: 393\/15.5 mm\/inch\u003c\/li\u003e \u003cli\u003eBolt Circle Diameter: 371 - 376 mm\/inch\u003c\/li\u003e \u003cli\u003eBolt Hole Diameter: 6.5\/0.3 mm\/inch\u003c\/li\u003e \u003cli\u003eFront Mount Baffle Cut-out: 352\/13.9 mm\/inch\u003c\/li\u003e \u003cli\u003eRear Mount Baffle Cut-out: 360\/14.2 mm\/inch\u003c\/li\u003e \u003cli\u003eDepth: 158\/6.2 mm\/inch\u003c\/li\u003e \u003cli\u003eVolume occupied by the driver: 4.3 liters\/ft3\u003c\/li\u003e \u003cli\u003eNet Weight: 12.6\/27.7 Kg\/Lbs\u003c\/li\u003e \u003cli\u003eShipping Weight: 13.6\/29.9 Kg\/Lbs\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e","brand":"RCF","offers":[{"title":"Default Title","offer_id":32388171858055,"sku":"LF15X400","price":489.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/3687\/2583\/products\/img_proxy_718d9a9e-2b8a-4cc0-9351-6356516e447b.jpg?v=1582296145","url":"https:\/\/www.balkanimal.com\/products\/rcf-lf15x400-replacement-woofer","provider":"Audiofeen","version":"1.0","type":"link"}