Package Includes:

• (2) Rockville 12" Car Audio Subwoofer
• (1) Rockville Dual 12” 1.25 cu.ft. Bedlined Sealed Subwoofer Enclosure Sub Box
• 20 Drywall Wood Screws (Wood screws are the type of screws; the screws are actually made of metal)
• 20 Feet of 14 AWG Blue Speaker Wire
• 4 Spade Terminals

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Video of W12K6D4 V2:

Features:

• Rockville W12K6D4 V2 K6 Series 12" Dual 4-Ohm Car Subwoofer
• Peak Power Handling: 2400 Watts
• Program Power Handling: 1200 Watts
  
• CEA Rated RMS Power Handling: 600 Watts
• 2.5" Voice coils (Black Aluminum Former Wound with 100% OFC 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 4-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
• XMAX:22 MM (One way)

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)

TS Parameters:

TS Parameter	Wired in Series	Wired in Parallel	Description of Measurement
Electrical Parameters
Re	8.58 Ohm	2.14 Ohm	Electrical voice coil resistance at DC
Le	6.549 mH	1.646 mH	Frequency independent part of voice coil inductance
L2	9.015 mH	2.289 mH	Para-inductance of voice coil
R2	14.79 Ohm	3.72 Ohm	Electrical resistance due to eddy current losses
Cmes	451.49 µF	1832.58 µF	Electrical capacitance representing moving mass
Lces	35.18 mH	8.68 mH	Electrical inductance representing drive compliance
Res	56.58 Ohm	14.09 Ohm	Resistance due to mechanical losses
fs	39.9 Hz	39.9 Hz	Drive resonance frequency
Mechanical Parameters (Using Laser)
Mms	219.823  g	219.582 g	Mechanical mass of drive diaphragm assembly including air load and voice coil
Mmd (Sd)	206.885 g	206.644 g	Mechanical mass of voice coil and diaphragm without air load
Rms	8.605 kg/s	8.505 kg/s	Mechanical resistance of total-drive losses
Cms	0.072 mm/N	0.072 mm/N	Mechanical compliance of drive suspension
Kms	13.84 N/mm	13.81 N/mm	Mechanical stiffness of driver suspension
Bl	22.065 N/A	10.946 N/A	Force factor (Bl product)
Lambda s	-0.013	0	Suspension creep factor
Loss Factors
Qtp	0.873	0.885	Total Q-factor consider all losses
Qms	6.41	6.475	Mechanical Q-factor of of drive in free air considering Rms only
Qes	0.972	0.985	Electrical Q-factor of drive in free air considering Re only
Qts	0.844	0.855	Total Q-factor considering Re and Rms only
Other Parameters
Vas	26.3903 l	26.4413 l	Equivalent air volume of suspension
n0	0.166%	0.164%	Reference efficiency (2 pi-radiation using Re)
Lm	84.4 dB	84.35 dB	Characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom	84.1 dB	84.05 dB	Nominal sensitivity (SPL at 1m for 1W @ Zn)
Sd	508 cm²	508 cm²	Diaphragm area
EBP	41.0	40.5	Efficiency bandwidth product

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Description:

The RD12B dual sealed speaker box is made in the USA with Grade “A” ¾” MDF wood. This enclosure is made with precision cutting machinery by industry experts that have been making these enclosures in the USA for over 20 years. All Rockville enclosures come with a customized enhanced glue that is unmatched by any other manufacturer. That means that the carpet will stay in place and not rip or tear. The ¾” USA MDF is much stronger then any type of import wood.  This will keep your box performing at an optimal level by not flexing and distorting your woofers. Your woofers will thank you!  EVERY Rockville enclosure is not only glued at all joints but stapled as well. If that wasn’t enough we add a layer of silicon to every seam! This makes your Rockville enclosure rock even more!

MADE IN THE USA WITH PRIDE!

Features:

• Rockville RD12B Dual 12” 1.25 cu.ft. Bedlined Sealed Subwoofer Enclosure Sub Box
• Proudly Made In The USA, Using Only The Finest Quality Materials - For The Best Level of Performance From Your Subs!
• 3/4" USA Heavy Duty MDF Construction
• Machine precision cut mounting holes
• Top of the line Glue for extra durable adhesion
• Designed, tested, and engineered to work with most of today’s popular woofers. These enclosures are built with the quality additives needed to maximize the performance of any sound system.
• Covered and Finished with a Durable Bed Liner Coating

Enclosure Measurements:

• Type of Enclosure: Sealed
• Enclosure Sub Size: Dual 12"
• Dimensions in Inches: 14” x 11.5” x 33.75”
• Top and Bottom Depth: 14"
• Mounting Depth: up to 12" (enough depth for any sub on the market)
• Gross Volume Per Sub (Measurement for the outer dimensions of the box): 1.55 Cubic Feet
• Net Volume Per Sub (Measurement for the outer dimensions of the box less the thickness of the wood): 1.25 Cubic Feet

Includes:

• 20 Drywall Wood Screws (Wood screws are the type of screws; the screws are actually made of metal)
• 20 Feet of 14 AWG Blue Speaker Wire
• 4 Spade Terminals

This accessory package includes everything you need to install two subwoofers into an enclosure, and wire your enclosure to your amplifier.  This package is a top of the line accessory package which we put together and tested. 

The drywall wood screws were hand selected by our installation experts because they drill into the enclosure very cleanly, without chipping the enclosure.  The speaker wire is 14 gauge.  This is way better than using 16 gauge.  You can be 100 % sure that your enclosure will have a clean signal to the amplifier with this top of the line speaker wire.  These spade terminals have also been hand selected by our installation experts to make the internal wiring simple, secure, and to run the audio signal cleanly.