{"product_id":"18sound-speaker-15-15nd830-aally-47775","title":"18SOUND Speaker 15\" 15ND830","description":"\u003cp\u003eThe 15ND830 is a high power, high output, low frequency woofer meeting the most stringent requirements in high quality professional transducers. Thanks to its versatility, the 15ND830 can be used in 2-way compact reflex enclosures and reflex \/ band pass subwoofers. The neodymium magnet assembly assures high flux concentration, low power compression and excellent heat exchange, since the external magnet configuration is considerably more efficient than traditional under-pole magnet topology. This results in high levels of force factor and power handling with an optimum power to weight ratio. The direct contact between the heat sink and basket, together with the magnetic structure, represents a fundamental improvement in thermal connection and heat dissipation. Hence, power handling capabilities are increased and power compression lowered. The deep profile curvilinear cone, created from a special high strength wood pulp, has been designed to achieve the best possible linearity within its frequency range. The cone surround made from a linen material is highly resistant to aging and fatigue. The in-house developed cone treatment is fully water repellent and also gives a significant degree of rigidity to the cone. The 75mm Interleaved Sandwich Voice coil (ISV) assembly is wound on a strong fiberglas former which improves force transmission and thermal power handling. A special coating applied to both the top and back plates makes the 15ND830 far more resistant to the corrosive effects of salts and oxidization.\u003c\/p\u003e\n\u003cp\u003eThe 12ND830 is a 300mm (12 in) neodymium Mid-bass transducer, and differs from the 12ND930 in the wire conception, offering a lighter speaker with a lower force factor.\u003cbr\u003e99 dB SPL 1W \/ 1m average sensitivity\u003cbr\u003e75 mm (3 in) Interleaved Sandwich Voice coil (ISV)\u003cbr\u003e450 W AES power handling\u003cbr\u003eNeodymium magnet assembly\u003cbr\u003eIdeal for compact reflex enclosures and two-way systems\u003c\/p\u003e\n\u003cp\u003eGeneral\u003c\/p\u003e\n\u003cp\u003eProduct type    Cone driver\u003cbr\u003eBrand    Eighteen Sound\u003cbr\u003eReference    12ND830\u003cbr\u003eProduct code    ALT120830WF08NA - 022128N210\u003c\/p\u003e\n\u003cp\u003eInformations\u003c\/p\u003e\n\u003cp\u003eNominal impedance    8 ohm\u003cbr\u003eDimensional category    12.5 inch\u003cbr\u003eFrequency coverage type    Low, Midbass, Midrange\u003cbr\u003eManufacturer sensitivity    99 dB\u003cbr\u003eCalculated sensitivity    97.86 dB\u003cbr\u003eNominal power handling    450 W\u003cbr\u003eMax power handling    700 W\u003cbr\u003eBandwidth    53÷5000 Hz\u003c\/p\u003e\n\u003cp\u003eFundamental parameters\u003c\/p\u003e\n\u003cp\u003eSd    531 cm²\u003cbr\u003eMms    46 gr\u003cbr\u003eCms    184 µm\/N\u003cbr\u003eLe    1.5 mH\u003cbr\u003eRe    5.7 ohm\u003cbr\u003eBL    17.6 T.m\u003c\/p\u003e\n\u003cp\u003eSmall signal parameters\u003c\/p\u003e\n\u003cp\u003eFs    55 Hz\u003cbr\u003eQes    0.3\u003cbr\u003eQms    5.15\u003cbr\u003eQts    0.28\u003cbr\u003eVas    72 L\u003c\/p\u003e\n\u003cp\u003eDatas\u003c\/p\u003e\n\u003cp\u003eXmax    ±6.5 mm\u003cbr\u003eEBP    183 Hz\u003cbr\u003eZmin    7 ohm\u003cbr\u003eFs \/ Qts    196 Hz\u003cbr\u003eVas * Qts²    5.65 L\u003cbr\u003eCalculated efficiency    3.84 %\u003cbr\u003eWeight    ~4 kg\u003c\/p\u003e\n\u003cp\u003eDimensions\u003c\/p\u003e\n\u003cp\u003eVoice coil diameter    3 inch\u003cbr\u003eOutside diameter    315 mm\u003cbr\u003eBaffle cutout diameter    282 mm\u003cbr\u003eDepth    140 mm\u003cbr\u003eFront thickness    9 mm\u003cbr\u003eDepth after front    131 mm\u003c\/p\u003e\n\u003cp\u003eShape \u0026amp; Materials\u003c\/p\u003e\n\u003cp\u003eFront chape    Cylindrical\u003cbr\u003eMagnet type    Neodymium\u003c\/p\u003e","brand":"18Sound","offers":[{"title":"Default Title","offer_id":49478519128291,"sku":"34254","price":68770.0,"currency_code":"GYD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0806\/0538\/0835\/files\/04_53_22_618_10_35_45_404_xnUGob2W__93991.1778008845.png?v=1785472674","url":"https:\/\/592mart.com\/products\/18sound-speaker-15-15nd830-aally-47775","provider":"592MART","version":"1.0","type":"link"}