21" Professional Sub Woofer Speaker Speaker 21" Woofer Professional Audio

Product Description     SpecificationFeatures : 2000W continuous program power capacity at 2 hours test , 1000W rms at 24 hour test 125mm (5 in) CCAW voice coil 30- 1.5KHz response 99 dB sensitivity Aluminium demodulating ring allows a very low distortion figure Ventilated voice coil gap for reduced power compression Speccification :       SpecificationNominal diameter 540/21mm/inch Nominal impedance 8ohmMin impedance LF 5.2ohm Frequency response 30-1.5k Hz Magnet size 280x25mmMagnet material Ferrite  Sensitivity (1w/1m)99dBNominal power handling 1000WattsContinuous power handling2000Watts Voice coil diameter 125 / 5mm/ inch Winding material CCAW Cone material Paper  Surround material Cloth  T/S Parameter Fs35.2HzRe5.2ΩQes0.53 Qts 0.51 Qms12.34 Vas246.1LRms6.3kg/s Cms0.06mm/NMms 350.7grBI27.6N/ARp80.0ΩLp44.8mHCp858.8uFLe1.4mHXmax (one-way)12mm       Company ProfileSince our establishment in 2009, we have been committed to manufacturing high-quality audio products, including professional audio speakers, car audio speakers, speakers with cabinets and power amplifiers. Since then, Huiyin Audio Co., Ltd. has had a complete high-quality supply chain, an excellent management team, and the ability to provide our customers with good service and high-quality products at a good price! Instead, the company introduced a series of advanced equipment such as automated production lines, high-efficiency magnetizers, impact testing machines, and temperature testing machines. To maximize, we obtained CE certification in 2012. The enterprise will be gradually developed in 2017.We are willing to customize the speakers and amplifiers required by customers to suit their market. OEM and ODM orders are welcome.Committed to strict quality control and thoughtful customer service, our experienced staff are always available to discuss your requirements and ensure complete customer satisfaction. When we cooperate with well-known Chinese brands, our products are also exported to customers in North America, South America, Europe, Asia, Africa and Africa and Oceania and other countries and regions. Whether it is selecting the current product from our catalog or seeking the help of an engineer to manufacture other ideal speaker models, please contact our customer service center or send an email to us. We want to establish a long-term business relationship with you.      FAQ1.Q: Are you a manufacturer? A: Yes, We are manufacturer who focus on high end speakers for car audio and professional audio.2.Q: What's your products range? A: Subwoofer, coaxial speaker, midranges, component speakers, tweeters and amplifiers .3.Q: Can I get some samples?  A: Yes, we could provide samples and ship by DHL, EMS, FedEx or by sea .4.Q: What's the payment method ? A: T/T, Western Union and PayPal for samples payment. 5.Q: Can you print our logo on speakers and packing boxes? A: Yes, we would like to do it  for you.6. Could you build speakers based on customer's design? A: Yes , we could.  /* 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