{"product_id":"18sound-speaker-12-12nmb420-aally-47777","title":"18SOUND Speaker 12\" 12NMB420","description":"\u003cp\u003e\u003cspan\u003eThe 12NMB420 is a 12 inch neodymium mid-bass transducer designed for professional monitoring and sound reinforcement. At the heart of this speaker is a carefully engineered drive system, designed to assure linear, low-distortion output, high power capability and efficient heat transfer. The most extended bass, lowest distortion and best control is usually realized in properly designed vented enclosures. In such designs, the vent, or port, actually provides the lowest octave of output. The excursion of the 12NMB420 at these frequencies is much reduced compared to sealed enclosures, directly reducing harmonic distortion and the possibility of speaker bottoming. Typical vented enclosure sizes range from 40lit up with tunings from 50 to 60Hz. Low frequency equalization is suggested and normally added, in order to improve the bass output if the system will work without subwoofer. The recommended amplifier size ranges from 250 up to 500W. The onboard copper sleeve positioned in the gap and coupled with SDR (Single Demodulating Ring) results in optimum balance for reproducing instantaneous peaks on mid frequencies, reducing intermodulation distortion. The external magnet typology neodymium magnet assembly assures high flux concentration, low power compression and excellent heat exchange since the external magnet configuration is considerably more efficient than the traditional under - pole magnet topology. This allows to obtain high levels of force factor and power handling with a power to weight ratio at the upper level. The high quality paper cone has a smooth, curvilinear profile design that eliminates bell-mode resonances within the intended frequency range. This is carried by a specially treated and damped double triple-roll linen suspension designed to control excursion maintaining the piston action linearity. The 12NMB420 employs a 64mm Interleaved Sandwich Voice coil (ISV), in which a high strength fiberglass former carries windings on both the outer and inner surfaces to achieve a mass balanced coil, resulting in an extremely linear motor assembly with reduced tendency to eccentric behavior when driven hard.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eEighteen Sound 12NMB420 8 Ohm 12 300W 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 12”, 300 mm\u003c\/li\u003e\n\u003cli\u003eRated Impedance 8Ω\u003c\/li\u003e\n\u003cli\u003eAES Power 300 W (rms)\u003c\/li\u003e\n\u003cli\u003eProgram Power 450 W\u003c\/li\u003e\n\u003cli\u003ePeak Power 900 W\u003c\/li\u003e\n\u003cli\u003eSensitivity 100.5 dB\u003c\/li\u003e\n\u003cli\u003eFrequency Range 55 ÷ 6000 Hz\u003c\/li\u003e\n\u003cli\u003ePower Compression @-10 dB 0.9 dB\u003c\/li\u003e\n\u003cli\u003ePower Compression @-3 dB 2.2 dB\u003c\/li\u003e\n\u003cli\u003ePower Compression @Full Power 2.9 dB\u003c\/li\u003e\n\u003cli\u003eMax Recomm. Frequency 2000 Hz\u003c\/li\u003e\n\u003cli\u003eRecomm. Enclosure Volume 1.77÷ 3.53 cu ft, 50 ÷ 100 lt.\u003c\/li\u003e\n\u003cli\u003eMinimum Impedance 6.9Ω at 25°C\u003c\/li\u003e\n\u003cli\u003eMax Peak To Peak Excursion 0.87”, 22 mm\u003c\/li\u003e\n\u003cli\u003eVoice Coil Diameter 2.5”, 65 mm\u003c\/li\u003e\n\u003cli\u003eVoice Coil Winding Material Aluminuim\u003c\/li\u003e\n\u003cli\u003eSuspension Triple roll, Polycotton\u003c\/li\u003e\n\u003cli\u003eCone Curvilinear, Paper\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e100.5 dB SPL 1 W \/ 1 m average sensitivity.\u003c\/li\u003e\n\u003cli\u003e2.5”, 65 mm Interleaved Sandwich Voice coil (ISV).\u003c\/li\u003e\n\u003cli\u003e300 W AES power handling\u003c\/li\u003e\n\u003cli\u003eExternal neodymium magnet assembly.\u003c\/li\u003e\n\u003cli\u003eSingle Demodulating Ring (SDR) for ultra low distortion.\u003c\/li\u003e\n\u003cli\u003eWeather protected cone and plates for outdoor usage.\u003c\/li\u003e\n\u003cli\u003eSpecially designed for compact two way systems.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"18Sound","offers":[{"title":"Default Title","offer_id":49478521323747,"sku":"65998","price":50730.0,"currency_code":"GYD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0806\/0538\/0835\/files\/18Sound_12NMB420_-Photo-__77872.1778008838.jpg?v=1785472676","url":"https:\/\/592mart.com\/products\/18sound-speaker-12-12nmb420-aally-47777","provider":"592MART","version":"1.0","type":"link"}