{"product_id":"21id-eighteen-sound-subwoofer-pro-da-21","title":"21iD Eighteen Sound Subwoofer PRO da 21\"","description":"\u003cdiv class=\"productHeader clearfix for-large\"\u003e\n\u003cdiv class=\"inchesWrapper\"\u003e\n\u003cp\u003eSubwoofer 21\", 2ohm, potenza massima continua 3600W, 94,2dB, magnete in neodimio, bobina mobile in rame avvolta a sandwich, anello demodulante di cortocircuito, spider estremamente rinforzato con tecnologia TTS, ottimizzato per massima dissipazione termica, conforme allo standard iPal Powersoft\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e21.0 In\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"productImg swiper-container swiper-container-horizontal\"\u003e\n\u003cdiv class=\"swiper-pagination swiper-pagination-clickable swiper-pagination-bullets\"\u003e \u003c\/div\u003e\n\u003cdiv class=\"swiper-wrapper\"\u003e\n\u003cdiv class=\"swiper-slide swiper-slide-active\"\u003e\u003cimg src=\"https:\/\/www.eighteensound.it\/system\/dragonfly\/production\/2021\/01\/16\/23_36_14_420_Rg8KsTe9.jpg\" alt=\"23_36_14_420_rg8kste9\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"swiper-slide swiper-slide-next\"\u003e\u003cimg src=\"https:\/\/www.eighteensound.it\/system\/dragonfly\/production\/2021\/01\/16\/23_36_14_699_gVIBBtCX.jpg\" alt=\"23_36_14_699_gvibbtcx\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"productSpecWrapper\"\u003e\n\u003cdiv class=\"productDetailsKeyWrapper\"\u003e\n\u003cdiv class=\"key_features openDet clearfix inSidebar\"\u003e\n\u003ch2 class=\"sidebarTitle\"\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClass D amplifier optimized for maximum power transfer\u003c\/li\u003e\n\u003cli\u003eConforms to Powersoft™ iPal® standards\u003c\/li\u003e\n\u003cli\u003e94.2 dB SPL 1W \/ 1m average sensitivity\u003c\/li\u003e\n\u003cli\u003e135mm (5.3\") split winding, four layer ISV copper voice coil\u003c\/li\u003e\n\u003cli\u003e3600 W program power handling\u003c\/li\u003e\n\u003cli\u003eTriple Silicon Spider (TSS) for improved excursion control\u003c\/li\u003e\n\u003cli\u003eAluminum demodulating ring (SDR) for lower distortion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"productDetailsKeyWrapper\"\u003e\n\u003cdiv class=\"key_features openDet clearfix inSidebar\"\u003e\n\u003ch2 class=\"sidebarTitle\"\u003eTechnologies\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.eighteensound.it\/en\/technologies\/ipal\/\"\u003eIPAL\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/22_25_05_923_ISV_c8c476bb-2c78-4a66-8fca-db181c67ef21.png?v=1777981437\" alt=\"\"\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.eighteensound.it\/en\/technologies\/isv-interleaved-sandwich-voice-coil\/\"\u003eISV - Interleaved Sandwich Voice Coil\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/22_25_11_753_SDR_ea067a66-91e8-467c-ab32-242fd13d9ba4.png?v=1777981439\" alt=\"\"\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.eighteensound.it\/en\/technologies\/sdr-single-demodulating-ring\/\"\u003eSDR - Single Demodulating Ring\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0921\/9630\/7329\/files\/22_25_20_79_TSS_c6b76fb8-e094-47d7-8f23-fbb977d27f89.png?v=1777981441\" alt=\"\"\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.eighteensound.it\/en\/technologies\/tss-triple-silicon-spider\/\"\u003eTSS - Triple Silicon Spider\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"productSpecWrapper desc\"\u003e\n\u003cdiv class=\"productSpec descr\"\u003e\n\u003cdiv class=\"productSpecContent\"\u003eThe 21iD is an 21 inch neodymium high performance subwoofer. The loudspeaker has been optimized for vented and bandpass subwoofer cabinet designs and is recommended to use a Class D or iPal (tm*) amplifier able to deliver 3600 Watt program power without clipping. Eighteen Sound engineers have obtained the best possible results with today's available materials in terms of clean and undistorted LF reproduction at a ultra high SPL, with the lowest possible power compression figure. The transducer design features include a large displacement suspension system specifically designed for matching the composite fiber reinforced, straight ribbed cone. Thanks to the Triple Silicon Spider (TSS) technology, the 21iD is able to control the moving mass with high linearity, showing an exceptional stability of mechanical parameter values in the long term. Bl force factor, as well as all other electro-dynamic parameters, are linear within the working range. This, together with the exceptional high excursion behavior - 70mm before damage, ±14mm linear Xmax - makes the 21iD an extremely low distortion, highly dynamic transducer. The 21iD features a state-of-the-art 5,3\" inside outside copper ISV (Interleaved Sandwich Voice-Coil) enabling the 21iD to deliver extraordinary transient results. The 21iD has been developed after intense FEA and fluidodynamics simulation and testing,focusing on dissipating the heat generated by the powerful voice coil. Special attention was given to the optimization of air flow into the gap without introducing audible noise. A low-density material air diffractor placed into the heatsink acts as a cooling system, increasing the power handling capability and lowering the power compression figure.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"newGraphGalleryWrapper\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Eighteensound","offers":[{"title":"Default Title","offer_id":55628706906497,"sku":null,"price":854.0,"currency_code":"EUR","in_stock":true}],"url":"https:\/\/www.audiokit.it\/products\/21id-eighteen-sound-subwoofer-pro-da-21","provider":"AudioKit","version":"1.0","type":"link"}