{"product_id":"18sound-speaker-21-21ntlw5000-8ohms-aally-46704","title":"18SOUND Speaker 21\" 21NTLW5000 8OHMS","description":"\u003cdiv class=\"productSpec descr\"\u003e\n\u003cdiv class=\"productSpecContent\"\u003e\n\u003ch1 class=\"product-title product_title entry-title\"\u003eEighteen Sound 21NTLW5000 8 Ohm 21″ Loudspeaker\u003c\/h1\u003e\n\u003cp\u003e\u003cbr\u003eThe 21NTLW5000 is a 21 inch diameter next generation high performance subwoofer, specifically designed for high SPL very low frequency applications in either a reflex, bandpass or horn loaded configuration. For optimum results we recommend the usage of power amplifiers able to deliver 4000W program power without clipping.\u003c\/p\u003e\n\u003cp\u003eThe 21NTLW5000 uses Eighteen Sound proprietary Tetracoil technology, where two different, axially separated magnetic gaps and two inside-outside 4.5\" diameter aluminum voice coils are wound on the same former and suspended evenly in the two magnetic gaps.\u003c\/p\u003e\nThe Tetracoil design key advantages are:\u003cbr\u003e1) a symmetric flux density versus displacement behavior, that minimizes the even distortion products;\u003cbr\u003e2) a very symmetric and flat inductance curve;\u003cbr\u003e3) the equivalent voice coil diameter of a 4.6\" Tetracoil speaker is greater than 6\". Consequently heat dissipation occurs over a larger surface area, driving AES power handling up to 1800 W.\u003cbr\u003e\n\u003cp\u003e21NTLW5000 design features include a large displacement suspension system which, in conjunction with a fiberglass reinforced, straight ribbed cone allows an ultra-linear piston action and provides full mechanical control across the entire working range.\u003c\/p\u003e\nIn order to furtherly increase power handling and reduce power compression figure, a low density material air diffractor is placed into the backplate venting hole acting as a cooling system, increasing power handling capability and lowering the power compression figure.\u003cbr\u003e\n\u003cp\u003e21NTLW5000 is able to perform properly under inclement weather conditions: the exclusive cone treatment improves pulp strength and gives water repellent properties to both sides of the membrane. In addition, magnetic structure metal plates coating is far more resistant than standard zinc coating to the corrosive effects of salts and oxidization.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"newGraphGalleryWrapper\"\u003e\n\u003cdiv class=\"graphGallery\"\u003e\n\u003cdiv class=\"productGraphs swiper-container swiper-container-horizontal\"\u003e\n\u003cdiv class=\"swiper-pagination graph-swiper-pagination swiper-pagination-clickable swiper-pagination-bullets\"\u003e\n\u003ch3\u003e\u003cstrong\u003eEighteen Sound \u003cspan class=\"fontstyle0\"\u003e21NTLW5000\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e8 Ohm 21″ 1800W Loudspeaker\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eGeneral Specifications:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNominal Diameter 21”, 533 mm\u003c\/li\u003e\n\u003cli\u003eRated Impedance 8Ω\u003c\/li\u003e\n\u003cli\u003eAES Power 1800 W (rms)\u003c\/li\u003e\n\u003cli\u003eProgram Power 4000 W (rms)\u003c\/li\u003e\n\u003cli\u003ePeak Power 10000 W (rms)\u003c\/li\u003e\n\u003cli\u003eSensitivity 97 dB\u003c\/li\u003e\n\u003cli\u003eFrequency Range 30 – 1800 Hz\u003c\/li\u003e\n\u003cli\u003ePower Compression @-10 dB 0.7 dB\u003c\/li\u003e\n\u003cli\u003ePower Compression @-3 dB 1.5 dB\u003c\/li\u003e\n\u003cli\u003ePower Compression @Full Power 2.2 dB\u003c\/li\u003e\n\u003cli\u003eMax Recomm. Frequency 150 Hz\u003c\/li\u003e\n\u003cli\u003eRecommended Enclosure Volume 4.24 ÷ 8.83 cuft, 120 ÷ 250 lt.\u003c\/li\u003e\n\u003cli\u003eMinimum Impedance 7.9 Ohm at 25°C\u003c\/li\u003e\n\u003cli\u003eMax Peak To Peak Excursion 2.75”, 70 mm\u003c\/li\u003e\n\u003cli\u003eVoice Coil Diameter 4.5”, 115 mm\u003c\/li\u003e\n\u003cli\u003eVoice Coil Technology split winding, 4 layers copper\u003c\/li\u003e\n\u003cli\u003eSuspension Triple Roll, Polycotton\u003c\/li\u003e\n\u003cli\u003eCone Straight Ribbed Carbon Fiber Loaded Cellulose\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e97 dB SPL 1W \/ 1m average sensitivity\u003c\/li\u003e\n\u003cli\u003e \u003cspan class=\"fontstyle0\"\u003eDual 115mm (4,5 in) Tetracoil Aluminum Voice coil\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e \u003cspan class=\"fontstyle0\"\u003e4000 W program power handling\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eCarbon fiber reinforced treated cellulose cone\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"fontstyle0\"\u003eWater repellent cone and epoxy coated plate\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"fontstyle0\"\u003eUltra linear suspension behavior for excellent sound clarity\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"fontstyle0\"\u003eSuitable for vented, horn loaded and bandpass speaker designs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"fontstyle0\"\u003eLow noise forced air cooling design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"fontstyle0\"\u003eSymmetric flux density and inductance behaviour\u003c\/span\u003e\u003cbr\u003e\n\u003ctable width=\"441\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"186\"\u003eSpecifications\u003c\/td\u003e\n\u003ctd width=\"255\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Diameter\u003c\/td\u003e\n\u003ctd\u003e533 mm ( in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Impedance\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"18Sound","offers":[{"title":"Default Title","offer_id":49479006191843,"sku":"198500019384","price":214690.0,"currency_code":"GYD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0806\/0538\/0835\/files\/17_24_56_50_18Sound_21NTLW5000__Photo_1___87792.1780347206.png?v=1785473030","url":"https:\/\/592mart.com\/products\/18sound-speaker-21-21ntlw5000-8ohms-aally-46704","provider":"592MART","version":"1.0","type":"link"}