{"product_id":"rcf-l12l750-mid-bass","title":"RCF L12L750 Mid-Bass","description":"\u003cp\u003eVery high efficiency and extended linearity are special features of this mid-bass transducer. \u003cbr\u003e\n \u003cbr\u003e\nVery efficient heat dissipation is ensured by a radiator that is part of the basket design. The aluminum voice coil offer a properly aligned Q factor and a very high sensitivity. A specially designed Shallow Triple-roll surround guarantee a very low midrange distortion. Fiberglass former voice coil, polycotton suspensions and treated cone provide the very high power handling.\u003cbr\u003e\n \u003cbr\u003e\nFeatures\u003c\/p\u003e\n\n\u003cp\u003e• 4-inch, fiberglass former, edgewound aluminum voice coil\u003cbr\u003e\n• 700W continuous program power handling\u003cbr\u003e\n• 101 dB Sensitivity\u003cbr\u003e\n• 60 Hz – 2 kHz Frequency range\u003cbr\u003e\n• Shaped Shallow Triple-roll damped surround\u003cbr\u003e\n• Inverted dust cap\u003c\/p\u003e\n\n\u003cp\u003eSpecifications\u003c\/p\u003e\n\n\u003cp\u003e• Nominal Diameter: 300 \/ 12 mm\/inch\u003cbr\u003e\n• Rated Impedance: 8 Ω\u003cbr\u003e\n• Program Power: 700 W AES\u003cbr\u003e\n• Power handling capacity: 350 W AES\u003cbr\u003e\n• Sensitivity: 101 dB\u003cbr\u003e\n• Frequency Range: 60 Hz ÷ 2000 Hz\u003cbr\u003e\n• Effective Piston Diameter: 260 \/ 10.2 mm\/inch\u003cbr\u003e\n• Max Excursion Before Damage (peak to peak): 40 \/ 1.6 mm\/inch\u003cbr\u003e\n• Minimum Impedance: 7.2 Ω\u003cbr\u003e\n• Voice Coil Diameter: 100 \/ 4 mm\/inch\u003cbr\u003e\n• Voice Coil Material: Aluminum\u003cbr\u003e\n• Voice Coil Winding Depth: 12 \/ 0.5 mm\/inch\u003cbr\u003e\n• Number of layers: 1\u003cbr\u003e\n• Kind of layer: outside\u003cbr\u003e\n• Top Plate Thickness: 10 \/ 0.4 mm\/inch\u003cbr\u003e\n• Cone Material: No pressed pulp\u003cbr\u003e\n• Cone Design: Curved\u003cbr\u003e\n• Surround Material: Polycotton\u003cbr\u003e\n• Surround Design: Triple roll\u003cbr\u003e\n• Resonance frequency: 62 Hz\u003cbr\u003e\n• DC resistance: 5.2Ω\u003cbr\u003e\n• Mechanical factor: 4.1\u003cbr\u003e\n• Electrical factor: 0.29\u003cbr\u003e\n• Total factor: 0.27\u003cbr\u003e\n• BL Factor: 18.8 T · m\u003cbr\u003e\n• Effective Moving Mass: 50 g\u003cbr\u003e\n• Equivalent Cas air load: 52 liters\u003cbr\u003e\n• Effettive piston area: 0.053 m²\u003cbr\u003e\n• Max. linear excursion (mathematical): 3.5 mm\u003cbr\u003e\n• Voice - coil inductance @ 1kHz: 1.25 mH\u003cbr\u003e\n• Half-space efficiency: 4.12%\u003cbr\u003e\n• Overall Diameter: 320 \/ 12.6 mm\/inch\u003cbr\u003e\n• Bolt Circle Diameter: 296-304 \/ 11.7-12 mm\/inch\u003cbr\u003e\n• Bolt Hole Diameter: 7 \/ 0.3 mm\/inch\u003cbr\u003e\n• Front Mount Baffle Cut-out: 286 \/ 11.3 mm\/inch\u003cbr\u003e\n• Rear Mount Baffle Cut-out: 284 \/ 11.2 mm\/inch\u003cbr\u003e\n• Depth: 146 \/ 5.7 mm\/inch\u003cbr\u003e\n• Volume occupied by the driver: 2.9 \/ 0.10 liters\/ft³\u003cbr\u003e\n• Net Weight: 11.5 \/ 25.3 kg\/lbs\u003c\/p\u003e","brand":"RCF","offers":[{"title":"Default Title","offer_id":58451993035016,"sku":"L12L750","price":223.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1057\/4076\/3400\/files\/img_proxy_bdc75502-0d72-4969-b419-5ecdf5b38dcf.jpg?v=1786934089","url":"https:\/\/musictoner.shop\/products\/rcf-l12l750-mid-bass","provider":"Musictoner","version":"1.0","type":"link"}