- Rockville W12K9D4 K9 Series 12" Dual 4-Ohm Car Subwoofer. Peak Power Handling: 4000 Watts. Program Power Handling: 2000 Watts. CEA Rated RMS Power Handling: 1000 Watts.
- 3" 4-Layer Black Aluminum Voice Coils Wound with OFC (100% Copper) Wire Made in Japan. The CCAW Wire we use is made in Japan. It is one of the most important components to make the sub high quality and last longer.
- Double Stacked 190 Oz High Quality Magnet. Cast Aluminum Basket With Black Sanded Finish Makes This Sub Very Efficient And Lighter Weight. Black Non-Pressed Paper Cone With Beautiful Finish.
- Our cones are ultra-stiff. They are thicker and stronger than other subs on the market making our subs able to handle more power. Thick Foam Surround Provides Incredible Sound Quality With Minimal Distortion.
- Red Stitching Cone Reinforcement Ensures Long Life. Polypropylene (PP) Dustcap. 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.
Features:
Rockville W12K9D4 K9 Series 12" Dual 4-Ohm Car Subwoofer
Peak Power Handling: 4000 Watts
Program Power Handling: 2000 Watts
CEA Rated RMS Power Handling: 1000 Watts
3" 4-Layer Black Aluminum Voice Coils Wound with OFC (100% Copper) Wire Made in Japan
The CCAW Wire we use is made in Japan. It is one of the most important components to make the sub high quality and last longer. (Most subs on the market use wire made in China which can not handle nearly as high temperatures as our wire that is made in Japan)
Double Stacked 190 Oz High Quality Magnet
Cast Aluminum Basket With Black Sanded Finish Makes This Sub Very Efficient And Lighter Weight
Black Non-Pressed Paper Cone With Beautiful Finish
Our cones are ultra-stiff. They are thicker and stronger than other subs on the market making our subs able to handle more power.
Thick Foam Surround Provides Incredible Sound Quality With Minimal Distortion
Red Stitching Cone Reinforcement Ensures Long Life
Polypropylene (PP) Dustcap
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
Nomex Spider provides tear resistance, strength and long-term reliability over regular cotton and poly cotton spiders
Cutout Diameter: 11.13” inches
Mounting Depth: 6.85” inches
Frequency Response: 33 Hz - 1.5K kHz
10mm T-Yoke 10mm Washer
Sensitivity: 83dB
Sealed Enclosure Volume: 0.8 - 1.25 Cubic Feet
Vented/Ported Enclosure Volume: 1.75 - 3.0 Cubic Feet
Weight: 28.67 Lbs.
Shipping Weight: 33 Lbs.
Shipping Box Dimensions: 14.57" x 14.57" x 10.83" Inches
TS Parameters:
Fms: 35.7 Hz
Res: 89.4 Ohm
Re: 7.6 Ohm
Qms: 4.60
Qes: 0.61
Qts: 0.54
Rms: 11.8kg/s
Cms: 0.08mm/N
Mms: 242.4 gr
Nref: 0.22%
Bl: 26.1N/A
SPL: 85.3dB
VAS: 30.0 L
Rp: 53.7 Ohm
LP: 48.8mH
CP: 499.5uF
Le: 3.28mH
