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Rockville

Rockville W12K9D4 V3 12" 4000-Watt Peak / 1000-Watt RMS Car Subwoofer Dual 4 Ohm DVC Design, Heavy Duty Bass Driver, for Car Audio Systems, 2-Piece

  • Based on 151 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Audiosavings
Arrives Jul 21 – Jul 23
Order within 11 hours and 12 minutes
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Features

  • Package Includes: (2) Rockville W12K9D4 12" 4000W Car Audio Subwoofer Dual 4-Ohm Sub, CEA Compliant
  • Unmatched Power Handling: Each sub delivers 4000W peak, 2000W program, and 1000W RMS. Designed for high-output car audio systems requiring consistent, controlled bass performance.
  • Superior Cooling & Durability: Features dual inner dust caps, reduced pole vent size, improved ventilation, and a Nomex spider for long-term strength during bass-heavy playback.
  • Enhanced Build Quality: Includes a 3" 4-layer aluminum voice coil wound with OFC wire, a double-stacked 190 oz magnet, cast aluminum basket, and cutout diameter of 11.13" with mounting depth of 6.85" for precise installation.
  • Versatile Enclosure Compatibility: Frequency response 33Hz-1.5kHz, XMAX 28mm, optimized for sealed (0.9-1.47 cu ft) or vented (1.8-2.75 cu ft) enclosures to achieve maximum bass output.

Brand: Rockville


Speaker Maximum Output Power: 2000 Watts


Frequency Response: 1.5 KHz


Connectivity Technology: wired


Audio Output Mode: Surround


Audio Output Mode: Surround


Mounting Type: Car Mount


Enclosure Material: Aluminum


Speaker Type: Subwoofer


Additional Features: High Quality Magnet


Antenna Location: car


Subwoofer Diameter: 12 Inches


Color: Black


Is Waterproof: FALSE


Warranty Type: Limited


Control Method: Voice


Speaker Size: 12 Inches


Woofer Diameter: 11.13 Inches


Water Resistance Level: Not Water Resistant


Specific Uses For Product: PA


Processor Count: 2


MP3 player: No


Controller Type: Voice control


Unit Count: 1.0 Count


Item Weight: 64 Pounds


Compatible Devices: Car Stereo Systems


Compatible with Vehicle Type: Car


Audio Driver Type: Dynamic Driver


Audio Driver Size: 12 Inches


Brand: Rockville


Model Number: W12K9D4


Model Name: W12K9D4


Built-In Media: Power Cable, Speaker, User Manual


Warranty Description: 1 Year Manufacturer


Number of Items: 2


Manufacturer: Rockville


Speaker Maximum Output Power: 2000 Watts


Input Voltage: 100 Volts


Frequency Response: 1.5 KHz


Number of Audio Channels: 2.0


Impedance: 4 Ohms


Connectivity Technology: wired


Wireless Technology: No Wireless Communication Technology


Subwoofer Connectivity Technology: Wired


Connectivity Protocol: wired


Power Source: Corded Electric


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jul 21 – Jul 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • WORTH EVERY PENNY!!!!
The speaker market has changed over the years. Its crazy what you can get for the money these days. Bought 2 12's and installed them into a Q-Bomb box. backed with a 3000 watt Taramp amp. I purchased these subs for a customers car had them hooked up in the shop. First person that heard them bought the set up! Shipping wasn't the fastest but with everything going on i would expect to much. All and all great speaker, when you add in that they are super affordable its a win for sure. you want a system that gets people attention. Get these the biggest box you can find and an amp with some ass and BOOM your welcome! ... show more
Reviewed in the United States on May 6, 2020 by Stacy Cary
    • Look no further. Look no further.
Review Image by Ben Santana II
Review Image by Ben Santana II
Review Image by Ben Santana II
Right out of the box. (These magnets are HUGE !! ) Anything comparable would be double the cost. Looks are one thing. Wait till you hook them up . Deep clean hard bass. Rockville is no joke. Will be buying Rockville moving forward. Hooked two of them parralel with the Rockville Phenom RXD M3 and a ported box. Sounds amazing !! Thanks for supplying quality equipment that the average bass enthusiast can afford. Don't let any negative reviews steer you away these are worth every penny. ... show more
Reviewed in the United States on December 16, 2019 Reviewed in the United States on December 16, 2019 by Ben Santana II
    • They nice!
They hit hard!! Decent wieght they look nice i wired them to 1ohm and they bump!! Still in break inn period so will update after a month!
Reviewed in the United States on March 19, 2025 by Victor
    • Great valve for the money
Hits very hard worth the money
Reviewed in the United States on April 29, 2026 by Amazon Customer
    • The best
I've been in car auto for over 25 yrs and these are the best 12s I've ever had in a truck had to use a ported box to stop my window from blowing out or cracking did not think these would hit so hard but the best money can buy!
Reviewed in the United States on August 5, 2023 by Scott Bell
    • Junk company/seller
Product is ok if you ever get it... selling stuff not in stock and hold your money
Reviewed in the United States on April 20, 2021 by michael carney
    • Buy em they sound great
These speakers are great .Know how to properly set your amp with your radio without sending a clipped signal. These speakers heavy and also have a great build to them. Definitely worth the monry
Reviewed in the United States on June 11, 2021 by Amazon Customer
    • They Hit Hard They Hit Hard
Review Image by mervine gage
I’ve read all the negative reviews so I was a bit skeptical. I bought them just as a temporary replacement until I got the ones I wanted. They’re hooked up to a 4000 watt Boss amp. They sound good and beat real hard. I’m thinking about getting 4 more to replace the ones in my show car. They’re in a single port box until I get a double port. Now I need an amp for my door speakers. They knocking. ... show more
Reviewed in the United States on April 4, 2021 Reviewed in the United States on April 4, 2021 by mervine gage

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