{"product_id":"rcf-l15p540-woofer","title":"RCF L15P540 Woofer","description":"\u003cdiv\u003e\u003cspan style=\"font-weight: bold;\"\u003eHigh power 15\" woofer. \u003c\/span\u003e\u003c\/div\u003e \u003cdiv\u003e \u003c\/div\u003e \u003cdiv\u003eVery good power handling, excellent linearity and very low distortion. Very efficient heat dissipation in ensured by a radiator that is part of the basket design. The air is forced in the radiator thanks to a dual sealed spider design.\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\u003e3-inch, fiberglass inside\/outside copper voice coil\u003c\/li\u003e \u003cli\u003e1000W continuous program power handling\u003c\/li\u003e \u003cli\u003e98 dB Sensitivity\u003c\/li\u003e \u003cli\u003e40 Hz – 2 kHz Frequency range\u003c\/li\u003e \u003cli\u003eDual spider design with silicon based dampening control\u003c\/li\u003e \u003cli\u003eM-roll surround and exponential 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 Ω\u003c\/li\u003e \u003cli\u003eProgram Power: 1000 W AES\u003c\/li\u003e \u003cli\u003ePower handling capacity: 500 W AES\u003c\/li\u003e \u003cli\u003eSensitivity: 98 dB\u003c\/li\u003e \u003cli\u003eFrequency Range: 40 Hz ÷ 2000 Hz\u003c\/li\u003e \u003cli\u003eEffective Piston Diameter: 330 \/ 13 mm\/inch\u003c\/li\u003e \u003cli\u003eMax Excursion Before Damage (peak to peak): 36 \/ 1.4 mm\/inch\u003c\/li\u003e \u003cli\u003eMinimum Impedance: 6.8 Ω\u003c\/li\u003e \u003cli\u003eVoice Coil Diameter: 76 \/ 3 mm\/inch\u003c\/li\u003e \u003cli\u003eVoice Coil Material: Copper\u003c\/li\u003e \u003cli\u003eVoice Coil Winding Depth: 18 \/ 0.7 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: 10 \/ 0.4 mm\/inch\u003c\/li\u003e \u003cli\u003eCone Material: No pressed pulp\u003c\/li\u003e \u003cli\u003eCone Design: Curved\u003c\/li\u003e \u003cli\u003eSurround Material: Polycotton\u003c\/li\u003e \u003cli\u003eSurround Design: M - roll\u003c\/li\u003e \u003cli\u003eResonance frequency: 50 Hz\u003c\/li\u003e \u003cli\u003eDC resistance: 5.6Ω\u003c\/li\u003e \u003cli\u003eMechanical factor: 9.7\u003c\/li\u003e \u003cli\u003eElectrical factor: 0.41\u003c\/li\u003e \u003cli\u003eTotal factor: 0.39\u003c\/li\u003e \u003cli\u003eBL Factor: 21.4 T · m\u003c\/li\u003e \u003cli\u003eEffective Moving Mass: 106 g\u003c\/li\u003e \u003cli\u003eEquivalent Cas air load: 100 liters\u003c\/li\u003e \u003cli\u003eEffettive piston area: 0.085 m²\u003c\/li\u003e \u003cli\u003eMax. linear excursion (mathematical): 6.5 mm\u003c\/li\u003e \u003cli\u003eVoice - coil inductance @ 1kHz: 1.5 mH\u003c\/li\u003e \u003cli\u003eHalf-space efficiency: 2.94%\u003c\/li\u003e \u003cli\u003eOverall Diameter: 387 \/ 15.2 mm\/inch\u003c\/li\u003e \u003cli\u003eBolt Circle Diameter: 371 \/ 14.6 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 \/ 14.1 mm\/inch\u003c\/li\u003e \u003cli\u003eDepth: 163 \/ 6.4 mm\/inch\u003c\/li\u003e \u003cli\u003eVolume occupied by the driver: 3.8 \/ 0.13 liters\/ft³\u003c\/li\u003e \u003cli\u003eNet Weight: 9.5 \/ 20.9 kg\/lbs\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e","brand":"RCF","offers":[{"title":"Default Title","offer_id":32388167106695,"sku":"L15P540","price":309.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0319\/3687\/2583\/products\/img_proxy_dad0e2fa-9391-4973-b5fa-f1b69c6487fb.jpg?v=1582296115","url":"https:\/\/www.balkanimal.com\/products\/rcf-l15p540-woofer","provider":"Audiofeen","version":"1.0","type":"link"}