{"product_id":"rcf-lf18g401","title":"RCF 18\" Woofer Pro Raw Transducer For Bass Enclosures | LF18G401","description":"\u003cp\u003eSpeaker builders, system integrators, and touring sound companies working on custom subwoofer enclosures need raw transducers that deliver consistent low-frequency output without compressing under sustained high-power conditions. The RCF 18\" woofer family addresses exactly that requirement. Each driver in the range is built around a 4-inch (or larger) fiberglass voice coil former wound with copper wire in an inside\/outside configuration, a construction that increases conductor surface area and transfers heat away from the gap more efficiently than single-sided winding. Forced air ventilation in the magnetic structure works alongside this design to further reduce power compression during long sets or continuous playback in installed sound environments.\u003c\/p\u003e\u003cp\u003eThe family spans multiple magnet and suspension configurations, giving designers the flexibility to match driver parameters precisely to their enclosure topology. Variants are available with ceramic or neodymium magnet systems to suit weight budgets and efficiency targets. Polycotton triple-roll and M-roll surrounds, combined with dual or single spider systems using silicone-based damping, provide the excursion control needed for reliable low-frequency extension in both bass reflex and bandpass alignments. CE compliance across the range confirms each driver meets European safety standards, a practical requirement for system integrators supplying installed or touring rigs internationally.\u003c\/p\u003e\u003cp\u003eWhere many comparable 18-inch transducers trade output linearity for raw sensitivity numbers, this family prioritizes amplitude control and thermal management. The result is a driver that holds its rated output level across a full performance day rather than sagging as the voice coil heats. For production companies building flight-cased subwoofer arrays, installation contractors fitting under-stage or delay-fill bass enclosures, or OEM builders sourcing components for branded cabinets, the RCF 18\" woofer range offers a technically grounded, field-proven platform.\u003c\/p\u003e","brand":"RCF USA, Inc.","offers":[{"title":"Default Title","offer_id":52451214950584,"sku":"113800","price":479.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/7382\/4696\/files\/113800_RCF-18_-Woofer-Pro-Raw-Transducer-For-Bass-Enclosures-_-LF18G401_ALT01sqr.jpg?v=1786581720","url":"https:\/\/soundpro.com\/products\/rcf-lf18g401","provider":"SoundPro","version":"1.0","type":"link"}