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$ 200.143
$ 273.029
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Product description Rockville VS12K54 12" K5 1400w Car Subwoofer in Vented Sub Enclosure Box - 4 Ohm Features: Rockville VS12K54 Single 12" K5 1400w Car Subwoofer Pre-loaded In Vented Sub EnclosurePeak Power Handling: 1400 WattsProgram Power Handling: 700 WattsCEA Rated RMS Power Handling: 350 WattsFinal Impedance: 4 Ohm¾” MDF enclosureBonded stapled and braced, Computer designed ventsAngled at 15 % for perfect bass alignmentHigh quality aviation grade tweed carpetSatin Nickel speaker wire push terminalsEnclosure air space is 1.52 Cu Ft per subVent dimensions (inches): 2.25" x 7" x 8.5"Tuning frequency of enclosure: 35 Hz2" 4-Layer Black Aluminum Voice Coils Wound with OFC (100% Copper) WireThe wire we use to wind the voice coil is imported from Japan which is way better quality than the standard China wire50 Oz High Quality Magnet, Cast Iron Basket With Black Sanded FinishFiber 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 itThick Foam Surround Provides Incredible Sound Quality With Minimal DistortionBlue Stitching Cone Reinforcement Ensures Long Life, Polypropylene DustcapGold-Plated spring loaded push terminals, Impedance: Single 4-Ohm Voice CoilsVented Hole on T-yoke Enhances Heat DissipationMounting Gasket with Rockville branding makes it easy to mount the subwoofer air-tightHigh BL Magnetic Motor GapHigh grade black glue that handles extremely high temperatures which allows our woofer to handle even more powerCutout Diameter: 11.02” inches, Mounting Depth: 5.03” inchesFrequency Response: 25 Hz - 1.5K kHz, 6mm T-Yoke + 6mm WasherSensitivity: 88dBWeight: 10.1 Lbs., Loaded enclosure weight: 37.4 Lbs.Loaded enclosure dimensions (inches): 18.25” x 14.25” x 16.25” Detailed Info: Body: Non-Pressed PaperGap Plate Inside Diameter: 80mm (3.14 inches)Gap Plate Outside Diameter: 156mm (6.14 inches)Gap Plate Thickness: 25mm (0.98 inches)Yoke Outside Diameter: 145mm (5.7 inches)Yoke Thickness: 6mm (0.23 inches)Yoke Pole Diameter: 50mm (2 inches) T/S Parameters (Tested on a Klippel): Electrical Parameters Electrical voice coil resistance at DC: Re 3.31 Ohmrequency independent part of voice coil inductance: Le 0.944 mHPara-inductance of voice coil: L2 1.468 mHElectrical resistance due to eddy current losses: R2 14.7 OhmElectrical capacitance representing moving mass: Cmes 871.67 μFElectrical inductance representing driver compliance: Lces 20.9 mHResistance due to mechanical losses: Res 31.48 OhmDriver resonance frequency: fs 37.3 Hz Mechanical Parameters Using laser Mechanical mass of driver diaphragm assembly including air load and voice coil: Mms 130.02 gMechanical mass of voice coil and diaphragm without air load: Mmd (Sd) 117.731 gMechanical resistance of total-driver losses: Rms 4.738 kg/sMechanical compliance of driver suspension: Cms 0.14 mm/NMechanical stiffness of driver suspension: Kms 7.14 N/mmForce factor (Bl product): Bl 12.213 N/ASuspension creep factor: Lambda s 0.028 Loss factors Total Q-factor considering all losses: Qtp 0.612Mechanical Q-factor of driver in free air considering Rms only: Qms 6.429Electrical Q-factor of driver in free air considering Re only: Qes 0.675Total Q-factor considering Re and Rms only: Qts 0.611 Other Parameters Equivalent air volume of suspension: Vas 47.7813 (1)Reference efficiency (2 pi-radiation using Re): n0 0.353 %Haracteristic sound pressure level (SPL at 1m for 1W @ Re): Lm 87.67 dBNominal sensitivity (SPL at 1m for 1W @ Zn): Lnom 88.5 dBRoot-mean-square fitting error of driver impedance Z(f): rmse Z 3.94 %Root-mean-square fitting error of transfer function Hx (f): rmse Hx 2.2 %Diaphragm area: Sd 490.87 cm2 See More
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