{"product_id":"rcf-nd640","title":"RCF ND640 Compression Driver Titanium Diaphragm | 8 Ohm | Industrial Packaging","description":"\u003cp\u003eThe RCF ND640 is engineered for professional loudspeaker system designers, OEM integrators, and touring sound companies that need a high-performance compression driver capable of surviving the demands of continuous high-SPL operation. With a 2.5-inch pure titanium diaphragm, neodymium magnet assembly, and RCF's proprietary Direct Drive Kapton voice coil technology, the ND640 is built for applications where clarity, reliability, and controlled dispersion across the full high-frequency range are non-negotiable. It suits line array elements, stage monitor horns, installed SR systems, and speaker repair or replacement scenarios where a premium HF component is specified.\u003c\/p\u003e\u003cp\u003eWhat sets the ND640 apart from alternatives at this exit size is the combination of FEM-optimized suspension geometry, a copper inductance demodulation ring for extended upper-frequency linearity, and a 3-slot phase plug in aluminum construction that controls phase coherence across the passband. The vented, damped double-roll titanium suspension controls breakup modes that limit lower-quality drivers, allowing the ND640 to reach further into the upper midrange without the distortion penalties typically associated with compact compression drivers. For engineers specifying components for high-demand live sound or fixed installation builds, this driver offers a measurable engineering advantage over ferrite-based or mylar-diaphragm alternatives in its class.\u003c\/p\u003e","brand":"RCF USA, Inc.","offers":[{"title":"Default Title","offer_id":52451227238584,"sku":"113842","price":319.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/7382\/4696\/files\/113842_RCF-ND640-Compression-Driver-Titanium-Diaphragm-_-8-Ohm-_-Industrial-Packaging_ALT01sqr.jpg?v=1786582993","url":"https:\/\/soundpro.com\/products\/rcf-nd640","provider":"SoundPro","version":"1.0","type":"link"}