{"product_id":"ds18-8pro400mr-4-8-high-sensitivity-midrange-loudspeaker-104db-400w-max","title":"DS18 8PRO400MR-4 8\" High-Sensitivity Midrange Loudspeaker (104dB) — 400W MAX","description":"\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional High-Power Performance — 200W RMS \/ 400W MAX\u003c\/li\u003e\n\u003cli\u003eUltra-High Sensitivity (104dB)\u003c\/li\u003e\n\u003cli\u003eWide Frequency Range (100Hz–12.5KHz)\u003c\/li\u003e\n\u003cli\u003eCopper Demodulating Rings for Lower Distortion\u003c\/li\u003e\n\u003cli\u003eCurvilinear Paper Cone with Cloth Surround\u003c\/li\u003e\n\u003cli\u003e1.5\" Voice Coil on a 40 Oz Ferrite Motor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eGet superior sound with DS18's \u003cstrong\u003e8PRO400MR-4\u003c\/strong\u003e. With its 8\" nominal diameter and 4-ohm nominal impedance, the 8PRO400MR-4 delivers exceptional performance and clarity. The RMS power handling of 200W and MAX power handling of 400W guarantee powerful sound reproduction.\u003c\/p\u003e\n\u003cp\u003eOne standout feature is its high sensitivity rating of 104 dB, allowing it to effortlessly fill any space with rich, immersive sound. The frequency response range of 100Hz-12.5KHz ensures that every beat is reproduced accurately.\u003c\/p\u003e\n\u003cp\u003eWhat sets the 8PRO400MR-4 apart is its demodulating rings made of copper. These rings substantially reduce harmonic and intermodulation distortion associated with voice coil displacement, and minimize the modulation of magnetic flux during the movement of the voice coil, resulting in a cleaner sound output.\u003c\/p\u003e\n\u003cp\u003eThe curvilinear cone shape enhances overall dispersion while maintaining optimal performance. The push speaker terminals make installation hassle-free, allowing for secure connections without compromising on sound quality. Its 1.5\" voice coil diameter ensures excellent heat dissipation for extended playtime.\u003c\/p\u003e\n\u003cp\u003eSold individually. Grill not included.\u003c\/p\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e8PRO400MR-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Diameter\u003c\/td\u003e\n\u003ctd\u003e8\" \/ 203mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Impedance\u003c\/td\u003e\n\u003ctd\u003e4 Ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRMS Power Handling\u003c\/td\u003e\n\u003ctd\u003e200W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMAX Power Handling\u003c\/td\u003e\n\u003ctd\u003e400W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity (1w\/1m)\u003c\/td\u003e\n\u003ctd\u003e104dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e100Hz-12.5KHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended HI Pass Crossover\u003c\/td\u003e\n\u003ctd\u003e160Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold in Pair or Single\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrill Included\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterleaved Sandwich Voice coil (ISV)\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDemodulating Rings\u003c\/td\u003e\n\u003ctd\u003eCopper Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImproved Heat Dissipation\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCone Shape\u003c\/td\u003e\n\u003ctd\u003eCurvilinear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeaker Terminals\u003c\/td\u003e\n\u003ctd\u003ePush 8ga\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eMotor\u003c\/h5\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoice Coil Diameter\u003c\/td\u003e\n\u003ctd\u003e1.5\" \/ 38.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoice Coil Former Material\u003c\/td\u003e\n\u003ctd\u003eTil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWinding Material\u003c\/td\u003e\n\u003ctd\u003eCCAW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCone Material\u003c\/td\u003e\n\u003ctd\u003ePaper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDust Cap Material\u003c\/td\u003e\n\u003ctd\u003ePaper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurround Material\u003c\/td\u003e\n\u003ctd\u003eCloth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpider Diameter\u003c\/td\u003e\n\u003ctd\u003e4\" \/ 102mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLeads Connection Type\u003c\/td\u003e\n\u003ctd\u003eSpider Crossed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBasket Material\u003c\/td\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBasket Color \/ Finish\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnet Material\u003c\/td\u003e\n\u003ctd\u003eFerrite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnet Weight\u003c\/td\u003e\n\u003ctd\u003e40 Oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplacement Volume\u003c\/td\u003e\n\u003ctd\u003e0.56L \/ 0.02ft3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eThiele \u0026amp; Small Parameters\u003c\/h5\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eEquivalent Volume Vas\u003c\/td\u003e\n\u003ctd\u003e37.3L \/ 1.31ft3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExcursion (one way) Xmax\u003c\/td\u003e\n\u003ctd\u003e0.75mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree Air Resonance Fs\u003c\/td\u003e\n\u003ctd\u003e70Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Factor Qms\u003c\/td\u003e\n\u003ctd\u003e4.31\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Factor Qes\u003c\/td\u003e\n\u003ctd\u003e0.34\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Factor Qts\u003c\/td\u003e\n\u003ctd\u003e0.32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Mass Mms\u003c\/td\u003e\n\u003ctd\u003e12.72g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Compliance Cms\u003c\/td\u003e\n\u003ctd\u003e0.43mm\/N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBL Factor BL\u003c\/td\u003e\n\u003ctd\u003e7.44\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoice Coil Inductance Le\u003c\/td\u003e\n\u003ctd\u003e0.03mH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCone Area Sd\u003c\/td\u003e\n\u003ctd\u003e246.06cm2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Resistance Re\u003c\/td\u003e\n\u003ctd\u003e3.5ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Mass w\/o air Mmd\u003c\/td\u003e\n\u003ctd\u003e12.5g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eMeasurement\u003c\/h5\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Diameter\u003c\/td\u003e\n\u003ctd\u003e8.19\" \/ 208mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Depth\u003c\/td\u003e\n\u003ctd\u003e3.72\" \/ 94.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront Mount Baffle Cutout\u003c\/td\u003e\n\u003ctd\u003e7.36\" \/ 187mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Depth\u003c\/td\u003e\n\u003ctd\u003e3.48\" \/ 88.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Diameter\u003c\/td\u003e\n\u003ctd\u003e5.1\" \/ 130mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n","brand":"DS18 Audio","offers":[{"title":"Default Title","offer_id":67577008292128,"sku":"8PRO400MR-4","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/0631\/9904\/files\/8PRO400MR-4-2000x2000.jpg?v=1790363050","url":"https:\/\/wavelengthusa.com\/es\/products\/ds18-8pro400mr-4-8-high-sensitivity-midrange-loudspeaker-104db-400w-max","provider":"Wavelength USA","version":"1.0","type":"link"}