{"product_id":"lowersubstitute-e1386","title":"Rockville DV8K52 Dual 8\" K5 1600w Car Subwoofers+Vented Sub Enclosure Box\/2 Ohm","description":"\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24px;\"\u003e\u003cimg src=\"https:\/\/smhttp-ssl-33159.nexcesscdn.net\/uploads\/Miscellanious\/rockville%20logo%20small.jpg\"\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003e\u003cfont size=\"5\"\u003e\u003cspan style=\"font-family: Arial; color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24px;\"\u003eVideo of K5 Series UPDATED:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/font\u003e\u003c\/p\u003e\r\n\u003ccenter\u003e\r\n\u003cdiv class=\"videoframe\"\u003e\r\n\u003cvideo controls=\"controls\" preload=\"none\" src=\"https:\/\/player.vimeo.com\/progressive_redirect\/playback\/695026012\/rendition\/1080p?loc=external\u0026amp;signature=a121689e160c6066dfdb6d240fc87175b5a8dc7751fe85186c931b06d0fe3bda\" poster=\"https:\/\/smhttp-ssl-33159.nexcesscdn.net\/Assets\/thumbnails\/K5_Series.jpg\" width=\"640\" height=\"360\"\u003e\u003c\/video\u003e\r\n\u003c\/div\u003e\r\n\u003c\/center\u003e\r\n\u003cbr\u003e\r\n\u003cp\u003e\u003cfont size=\"5\"\u003e\u003cspan style=\"font-family: Arial; color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24px;\"\u003eFeatures:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/font\u003e\u003c\/p\u003e\r\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eRockville DV8K52 Dual 8\" K5 1600w Car Subwoofers Pre-loaded In Vented Sub Enclosure\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003ePeak Power Handling: 1600 Watts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eProgram Power Handling: 800 Watts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eCEA Rated RMS Power Handling: 400 Watts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eFinal Impedance: 2 Ohm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003e¾” MDF enclosure\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eBonded stapled and braced\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eComputer designed vents\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eAngled at 15 % for perfect bass alignment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eHigh quality aviation grade tweed carpet\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eSatin Nickel speaker wire push terminals\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eEnclosure air space is 0.8 Cu Ft per sub\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eVent dimensions (inches): 2.5\" x 6.75\" x 9.75\"\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eTuning frequency of enclosure: 44 Hz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003e1.5\" 4-Layer Black Aluminum Voice Coils Wound with OFC (100% Copper) Wire\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eThe wire we use to wind the voice coil is imported from Japan which is way better quality than the standard China wire\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003e30 Oz High Quality Magnet\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eCast Iron Basket With Black Sanded Finish\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eFiber Reinforced Ultra Stiff Black Non-Pressed Paper Cone – This cone is very efficient which makes the speaker sound louder even without requiring a lot of power to push it\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eThick Foam Surround Provides Incredible Sound Quality With Minimal Distortion\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eBlue Stitching Cone Reinforcement Ensures Long Life\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003ePolypropylene Dust cap\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eGold-Plated spring loaded push terminals\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eImpedance: Single 4-Ohm Voice Coils\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eVented Hole on T-yoke Enhances Heat Dissipation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eMounting Gasket with Rockville branding Makes it Easy To Mount the Subwoofer Air-Tight\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eHigh BL Magnetic Motor Gap\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eHigh grade black glue that handles extremely high temperatures which allows our woofer to handle even more power\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eCutout Diameter: 7.16 inches\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eMounting Depth: 3.54 inches\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eFrequency Response: 44 Hz - 1.3K kHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003e5mm T-Yoke + 5mm Washer\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eSensitivity: 85.7dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-family: Arial;\"\u003eWeight: 39.49\u003c\/span\u003e Lbs.\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eDimension: 12.5\" x 12\" x 24.3\"\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\u003cspan style=\"font-family: Arial;\"\u003eShipping Weight: 43.1 Lbs.\u003c\/span\u003e\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eShipping Box Dimensions: 25.4\" x 16.1\" x 14.1\"\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cfont size=\"5\"\u003e\u003cspan style=\"font-family: Arial; color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24px;\"\u003eDetailed Info of Subwoofer:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/font\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eBody: Non-Pressed Paper\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eGap Plate Inside Diameter: 60mm (2.36 inches)\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eGap Plate Outside Diameter: 120mm (4.72 inches)\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eGap Plate Thickness: 25mm (0.98 inches)\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eYoke Outside Diameter: 114mm (4.48 inches)\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eYoke Thickness: 5mm (0.20 inches)\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eYoke Pole Diameter: 38mm (1.5 inches)\u003c\/span\u003e\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cfont size=\"5\"\u003e\u003cspan style=\"font-family: Arial; color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 24px;\"\u003eT\/S Parameters (Tested on a Klippel):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/font\u003e\u003c\/p\u003e\r\n\u003cp\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cstrong\u003eElectrical Parameters\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eElectrical voice coil resistance at DC: Re 3.43 Ohm\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eFrequency independent part of voice coil inductance: Le 0.899 mH\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003ePara-inductance of voice coil: L2 1.32 mH\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eElectrical resistance due to eddy current losses: R2 13.71 Ohm\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eElectrical capacitance representing moving mass: Cmes 610.26 µF\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eElectrical inductance representing driver compliance: Lces 20.57 mH\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eResistance due to mechanical losses: Res 34.13 Ohm\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eDriver resonance frequency: fs 44.9 Hz\u003c\/span\u003e\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cstrong\u003eMechanical Parameters \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cp\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cstrong\u003eUsing laser\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eMechanical mass of driver diaphragm assembly including air load and voice coil: Mms 54.697 g\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eMechanical mass of voice coil and diaphragm without air load: Mmd (Sd) 51.475 g\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eMechanical resistance of total-driver losses: Rms 2.626 kg\/s\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eMechanical compliance of driver suspension: Cms 0.229 mm\/N\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eMechanical stiffness of driver suspension: Kms 4.36 N\/mm\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eForce factor (Bl product): Bl 9.467 N\/A\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eSuspension creep factor: Lambda s 0.046\u003c\/span\u003e\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cstrong\u003eLoss factors\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eTotal Q-factor considering all losses: Qtp 0.538\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eMechanical Q-factor of driver in free air considering Rms only: Qms 5.879\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eElectrical Q-factor of driver in free air considering Re only: Qes 0.591\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eTotal Q-factor considering Re and Rms only: Qts 0.537\u003c\/span\u003e\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cstrong\u003eOther Parameters\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eEquivalent air volume of suspension: Vas 13.1298 (1)\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eReference efficiency (2 pi-radiation using Re): n0 0.194 %\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eCharacteristic sound pressure level (SPL at 1m for 1W @ Re): Lm 85.07 dB\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eNominal sensitivity (SPL at 1m for 1W @ Zn): Lnom 85.74 dB\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eRoot-mean-square fitting error of driver impedance Z(f): rmse Z 4.04 %\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eRoot-mean-square fitting error of transfer function Hx (f): rmse Hx 2.29 %\u003c\/span\u003e\u003c\/li\u003e\r\n  \u003cli\u003e\u003cspan style=\"font-family: Arial;\"\u003eDiaphragm area: Sd 201.06 cm2\u003c\/span\u003e\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Rockville","offers":[{"title":"Default Title","offer_id":47641896190253,"sku":"DV8K52","price":119.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/0805\/3037\/files\/63ea40c0-61be-4da7-b221-a3d426bee9cf_ea1a31ea-3920-41b0-90eb-78c770665c57.jpg?v=1736784234","url":"https:\/\/audiosavings.com\/products\/lowersubstitute-e1386","provider":"Audio Savings","version":"1.0","type":"link"}