Video of W12K6D2 V2:

Authorized Rockville Dealer!

Features:

• Rockville W12K6D2 V2 K6 Series 12" Dual 2-Ohm Car Subwoofer
• Peak Power Handling: 2400 Watts
• Program Power Handling: 1200 Watts   
• CEA Rated RMS Power Handling: 600 Watts 
• 2.5" 4-Layer Black Aluminum Voice Coils Wound with OFC (100% Copper) Wire
• The wire we use is made in the USA! It is one of the most important components to make the sub high quality and last longer
• Double Stacked 100 Oz High Quality Magnet
• Cast Aluminum Basket With Black Sanded Finish Makes This Sub Very Efficient
• Fiber Reinforced Ultra Stiff Black Non-Pressed Paper Cone
• Thick Foam Surround Provides Incredible Sound Quality With Minimal Distortion
• Red Stitching Cone Reinforcement Ensures Long Life
• Polypropylene (PP) Dustcap
• Two Chrome-Plated Binding Post Terminals - These are the best terminals on the market and they accept any gauge wire
• Impedance: Dual 2-Ohm Voice Coils
• Vented Hole on T-yoke Enhances Heat Dissipation
• Special Custom Rubber Boot Magnet Covers Make the Woofer Look Nice and Protects the Magnet
• Custom Rockville Mounting Gasket Looks Beautiful and Makes it Easy To Mount the Subwoofer Air-Tight
• High BL Magnetic Motor Gap
• We use the highest grade black glue that handles extremely high temperatures which allows our woofer to handle even more power than they are rated
• Cutout Diameter: 11.125” inches
• Mounting Depth: 5.75” inches
• Frequency Response: 27 Hz - 1.5K kHz
• 8mm T-Yoke + 8mm Washer
• Sensitivity: 85dB
• Sealed Enclosure Volume: 1.0 - 1.5 Cubic Feet
• Vented/Ported Enclosure Volume: 1.65 - 2.5 Cubic Feet
• Weight: 17.64 Lbs.
• Shipping Weight: 22.05 Lbs.
• Shipping Box Dimensions: 15.75" x 15.75" x 13.6" Inches
  

TS Parameters:

TS Parameter	Wired in Series	Wired in Parallel	Description of Measurement
Electrical Parameters
Re	4.43 Ohm	1.1 Ohm	Electrical voice coil resistance at DC
Le	4.279 mH	1.084 mH	Frequency independent part of voice coil inductance
L2	6.063 mH	1.542 mH	Para-inductance of voice coil
R2	9.4 Ohm	2.38 Ohm	Electrical resistance due to eddy current losses
Cmes	854.3 µF	3360.51 µF	Electrical capacitance representing moving mass
Lces	22.29 mH	5.64 mH	Electrical inductance representing drive compliance
Res	40.15 Ohm	9.83 Ohm	Resistance due to mechanical losses
fs	36.5 Hz	36.6 Hz	Drive resonance frequency
Mechanical Parameters (Using Laser)
Mms	247.726  g	248.521 g	Mechanical mass of drive diaphragm assembly including air load and voice coil
Mmd (Sd)	234.788 g	235.583 g	Mechanical mass of voice coil and diaphragm without air load
Rms	7.222 kg/s	7.522 kg/s	Mechanical resistance of total-drive losses
Cms	0.077 mm/N	0.076 mm/N	Mechanical compliance of drive suspension
Kms	13.01 N/mm	13.12 N/mm	Mechanical stiffness of driver suspension
Bl	17.029 N/A	8.6 N/A	Force factor (Bl product)
Lambda s	0.045	0.045	Suspension creep factor
Loss Factors
Qtp	0.813	0.799	Total Q-factor consider all losses
Qms	7.861	7.592	Mechanical Q-factor of of drive in free air considering Rms only
Qes	0.867	0.853	Electrical Q-factor of drive in free air considering Re only
Qts	0.781	0.767	Total Q-factor considering Re and Rms only
Other Parameters
Vas	28.0703 l	27.8305 l	Equivalent air volume of suspension
n0	0.151%	0.153%	Reference efficiency (2 pi-radiation using Re)
Lm	83.99 dB	84.06 dB	Characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom	83.55 dB	83.63 dB	Nominal sensitivity (SPL at 1m for 1W @ Zn)
Sd	508 cm²	508 cm²	Diaphragm area
EBP	42.1	42.9	Efficiency bandwidth product

Detailed Info:

• Body: Non-Pressed Paper
• Gap Plate Inside Diameter: 80mm (3.14 inches)
• Gap Plate Outside Diameter: 156mm (6.14 inches)
• Gap Plate Thickness: 20mm (0.8 inches)
• Yoke Outside Diameter: 145mm (5.71 inches)
• Yoke Thickness: 8mm (0.31 inches)
• Yoke Pole Diameter: 60mm (2.4 inches)

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About Rockville Quality Control Procedures:
The Rockville brand stands for Quality, Innovation and Value. All Rockville products go through the most rigorous quality control standards in the industry. Products go through months of extensive testing before they reach your hands. All user functions are tested and all internal components are tested for quality. Rockville makes products that are virtually un-breakable! Rockville is one of the only brands in its class to test every concept model for weeks or months before starting production. Once production begins, Rockville sends product engineers to their factory to quality control every line of production. During production every product is tested and on top of that Rockville goes the extra mile and has their high level product engineers do an additional quality control. They test a certain percentage of all products from the production line a second time to ensure that the quality meets their vigorous standards, and to make sure that there is never a batch of products with even a slight problem. All Rockville products are backed with a hassle free warranty, though it is unlikely that you will need to use it.