18inch PRO Audio 4inch Voice Coil Ferrite Magnet Powered Speaker Subwoofer

Ruizheng Speakers primary line consists of high frequency drivers and coaxial components, and cone drivers. We have made a strong commitment to provide a well-balanced line of Low Frequency drivers that range from 6.5" to 24", as well as a very complete line of High Frequency drivers.   Our engineers have optimized each design with CLIO software to ensure each design operates to its fullest potential time and time again. From nightclubs, to stadiums, to concert halls around the world, our products are chosen based on their reliability, consistency and most of all for their outstanding sound quality.https://ruizhengsound.en.made-in-china.com/product/FOPGYuMAgRVp/China-15inch-Loose-Magnetic-Material-Punchful-Bass-Sound-Bar-Speaker.html  MODEL   S18WF10028          Specifications Thiele Small ParametersTYPE Subwoofer Fs33 Hz Nominal Diameter465 mm/18 in Re5.6ohmRated impedance8 ohm Qms6.98Nominal (AES)1000 W Qes0.42Continuous Program2000 W Qts0.40 Sensitivity(1w/1m)96 dB Vas233LFrequency Range33Hz-1500Hz Sd0.125 m2Voice Coil Diameter100 mm/4 in Mms207 gVoice Coil MaterialCopper out/in BL25 T.M     Mounting lnformation Shipping   lnformationOverall Diameterφ460 mm/φ18.1 in Net Weight         ( 1 unit)13 kgBolt Circle Diameterφ443 mm/φ17.4 in Shipping Weight ( 1 unit)15 kgMount Baffle Cut-outφ423 mm/φ16.7 in Package Size      ( 1 unit)50x50x24 cmDepth210 mm/8.26 in   Bolt Hole Diameter8-6.5mm/8-0.26 in    Founded in 2011, ruizheng audio is designing and distributing amplifier, speakers,  supplying OEM/ODM components to many of the professional audio brands in the market today./* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1