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Rockville

Rockville W15K9D4 15" Car Audio Subwoofer, Dual 4-Ohm, 1250W RMS CEA Rated | 5000W Peak, 3" 4-Layer OFC Voice Coil, 190 Oz Magnet, Cast Aluminum Basket, 30mm XMAX, Nomex Spider

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Availability: In Stock.
Fulfilled by Audiosavings
Arrives Jul 31 – Aug 2
Order within 19 hours and 1 minute
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Speaker Size: 15.0 Inches


Impedance: 4.0 Ohms


Features

  • POWERFUL BASS PERFORMANCE: Delivers 5000W peak and 1250W RMS CEA-rated power for deep, impactful bass in car audio systems and competitions.
  • ULTRA-STIFF NON-PRESSED PAPER CONE: Thick, reinforced cone handles intense vibrations and produces clean, distortion-free sound.
  • FLEXIBLE DUAL 4-OHM VOICE COILS: Dual 4-ohm configuration allows multiple wiring options for versatile amplifier setups.
  • DOUBLE-STACKED 190 OZ MAGNET: High-quality magnet improves power handling and efficiency for stronger output.
  • LONG EXCURSION XMAX DESIGN: 30mm XMAX and 3-inch high-temp voice coil provide excellent heat dissipation and deep excursion for reliable high-output bass.

Description

The Rockville W15K9D4 15" car audio subwoofer is engineered for powerful bass and long-lasting performance in demanding systems. With 5000W peak power and 1250W RMS CEA-rated output, it delivers deep, impactful sound for bass-heavy music and competition-level setups. Built with an ultra-stiff non-pressed paper cone, a sturdy cast aluminum basket, and durable red stitching, this subwoofer is designed to withstand heavy use. The dual 4-ohm voice coils offer flexible wiring options for amplifier compatibility, while the 3-inch high- temperature voice coil ensures stable performance during extended play. A double-stacked 190 oz magnet enhances efficiency and output, and the impressive 30mm XMAX allows for deep excursion and dynamic bass response. Ideal for hip-hop, EDM, rock, or any bass-driven genre, this subwoofer combines precision engineering with raw power to elevate your car audio system.

Brand: Rockville


Speaker Maximum Output Power: 5000 watts


Frequency Response: 1500 KHz


Connectivity Technology: Bluetooth


Audio Output Mode: Surround


Audio Output Mode: Surround


Mounting Type: Car Mount


Enclosure Material: Paper, Aluminum


Speaker Type: Subwoofer


Additional Features: Durable, Lightweight


Antenna Location: car


Subwoofer Diameter: 15 inches


Color: Black


Is Waterproof: FALSE


Warranty Type: Limited


Control Method: Voice


Speaker Size: 15 inches


Woofer Diameter: 14.09 inches


Specific Uses For Product: Car audio systems


Controller Type: Voice control


Frequency Response: 1500 KHz


Number of Audio Channels: 2.1


Impedance: 4 ohm


Connectivity Technology: Bluetooth


Wireless Technology: Bluetooth


Subwoofer Connectivity Technology: Wired


Connectivity Protocol: Bluetooth


Power Source: Corded Electric


Brand: Rockville


Model Number: W15K9D4


Model Name: W15K9D4


Built-In Media: Subwoofer


Warranty Description: 1 YEAR


Number of Items: 60


UPC: 819216020739


Global Trade Identification Number: 39


Manufacturer: Rockville


Item Type Name: Rockville W15K9D4 15" 5000w Peak Car Audio Subwoofer Dual 4-Ohm Sub 1250w RMS CEA Rated


Speaker Maximum Output Power: 5000 watts


Input Voltage: 12 volts


Unit Count: 1 Count


Item Dimensions D x W x H: 12.6"D x 17.9"W x 18.1"H


Item Weight: 35 pounds


Compatible Devices: Car Stereos, Car Media Players, Car Audio Systems


Compatible with Vehicle Type: Car


Audio Driver Type: Dynamic Driver


Audio Driver Size: 14.09 inches


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jul 31 – Aug 2

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.

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Top Amazon Reviews

    • Very very impressed ...and fast shipping 👍🏼👍🏼
Speaker Size: 10.0 Inches Impedance: 4.0 Ohms
I have too say am very impressed!! I’ve had in the pass 2 kickers L7 also 2 12 JL ‘s I’ve own plenty of 12 inch speakers with plenty of cheater amps I’ve Ben around the block as I’ve right now I still have a few cheater amps put away i still have 1 kicker ZR1000 and a ZR600 also a few ADS amps ..I own a Audi b8.5 I didn’t want to put 2 12’s in my trunk this time I wanted to upgrade the factory 10 inch subwoofer and a separate amp just for the 10 inch sub.. so I bought this 10 inch and I installed it where the factory sub was on the back top wow it almost didn’t fit I didn’t realize it was tall but it did.. I also sealed everything back there I used my alpine cheater amp as it’s only one Chanel And small amp it’s pushing 700 watts perfect for the speaker..the speaker i got was 10K9D4 4ohms wired to 2 ohms . this set up sounds nice it hits very low I have to say am impressed how it sounds.. some of my friends that have 2 12’s in there trunk couldn’t believe I was pushing 1 10 inch.. anyone reading this that don’t know to much about stereo systems keep in mind that a good brand amp comes a long way and keep in mind I have 4 cheater amps one of my amps is a true rms 1000 watt and I didn’t install that because it’s only 1 10 inch subwoofer and the most I’ll give this speaker is 600 to 700 watts Without blowing the speaker and trust me that’s plenty for one 10 inch this setup hits good in every music I throw at it ..I never owned 10 inch speakers I always went with 2 12inch ..now if I bought 2 of these speakers then I would of used my ZR600 cheater amp I still wouldn’t use the ZR1000 I would only use my ZR1000 if I had two 12’s my point is u don’t need to use a kicker ZR1000 cheater amp on 1 10 inch subwoofer u will blow this speaker ..I don’t understand y companies say 3000 watts on a speaker when true rms is 600 watts it confuses the newbies.. hope this helps someone That doesn’t know to much ..agin for the price of this speaker u can beat it ..I went with speaker because I didn’t want a box in my trunk o I forgot to mention I had a 10 inch kicker 8 ohm speaker with the factor amp before I installed my alpine cheater amp and this monster subwoofer ..5 stars for this speaker good price and well built speaker and very very fast shipping Update 2021 I ended up buying a second one these speakers with a good amp pounds I only had 1 at first I replaced the factory 10 inch to this speaker and I sounds like I have 2 12 inch subs in my car every one that hears it can’t believe the setup I have it hits nice I bought a nother one that’s how good these speakers are I have no complaint I can’t believe how well made these speakers are for the price . And the package is very well packaged for delivery.. ... show more
Reviewed in the United States on May 20, 2020 by Kiko33
    • Bass is not an issue
Speaker Size: 8.0 Inches Impedance: 4.0 Ohms
Best 8" subwoofer Can handle bass and performance
Reviewed in the United States on May 5, 2026 by Homero
    • Great subwoofers
Speaker Size: 8.0 Inches Impedance: 4.0 Ohms
Great product. Packaging was good, arrived on time, unpacked an threw in a box an sound amazing.
Reviewed in the United States on December 7, 2025 by Shawn
    • Ready for competition
Speaker Size: 12.0 Inches Impedance: 4.0 Ohms
Sounds better than expected.not only you hear the bass but feel it too. Have a high powered amp,use a pair of these speakers and feel the power.
Reviewed in the United States on July 25, 2026 by pont fiero
    • Great value, just the right boom
Speaker Size: 15.0 Inches Impedance: 4.0 Ohms
I bought this 15 inch sub to replace what is now two different blown subs. Each of the previous ones had slightly different musical qualities to them and I had had the first one for over 25 years, so was really accustomed to how it sounded. This sub impresses in all the right ways. I have it powered with a Rockford Fosgate amp that produces 300W RMS @ 2ohm which is more than enough to get this bumping hard. I studied a lot of reviews before buying. All of them pointed to the quality materials and construction but warned about running these too hard. My setup appears to be a good sweet spot. Running it on the lower power end like I am easily explains the weaker hit at the extremes of the dynamic range, which could likely be improved with a tuned enclosure but I have no complaints and dont intend to change anything. I have it in a sealed box and all in all this will provide the deep boom you want out of a 15 inch sub, at an affordable price. I can easily overpower the rest of my system with bass notes if I turn this up. And I enjoy the sound it provides in all types of music from classical (the cannons in the 1812 overture) to the old western classics of Hank Sr and the boomy rap rock/metal I love. And it's shaking the heck out of my F150 super cab! I might need to track down and try to dampen out a few new rattles! ... show more
Reviewed in the United States on September 15, 2019 by Amazon Customer
    • BUMPS and Jiggles around Nicely!
Speaker Size: 10.0 Inches Impedance: 4.0 Ohms
Bought the 10" K9D4 3200 w max sub. and have it with a MB Quartz 1500 watt mono amp. Bumps lovely but sometimes depending on the song it will clip the amp. So I have to pull over, pop the trunk and reset the amp in the middle of traffic ( and look like a cornball ) then lower the volume a notch or two depending if the song has long deep bass on it.....then I got to keep it on 22 volume level, can't roll it up to 25 where I like it. So all the mirror shake and rattle and sometimes the trunk just pops open in the middle of the freeway going 90mph because of the banging of the dual K9 box. Love it! Got to get me a MB Quartz 2000 watt amp to try that set up. Maybe no clipping there. I just like the bass control level all the way up. I'm an all balls to the wall kind-a-guy. Rockville amps are too expensive right now for me but maybe by the end of the year Ol' Saint Nick can hook it up! I guess depends if I'm mistah Nice guy Aah! and grease him with a box of Chips-a-hoy....that fat old bearded guy HoHoHo! ... show more
Reviewed in the United States on March 3, 2023 by E-man
    • great for what I bought them for
Speaker Size: 10.0 Inches Impedance: 4.0 Ohms
I mounted this subwoofer in a waterproof ported enclosure so I can remove it out of my boat. I have always wanted a great sound in my boat, this definitely hit the bullseye. I did the enclosure because I do not always need the subwoofer in my boat so I can remove it when I don't need it. I was worried this thing wouldn't sound that great.......I was sooooo wrong this thing bumps like no bodies business. I hooked it up to a Rockville RXM-S6 amp and this thing pushes it great and I have other channels for the rest of my speakers. You guys have my vote and so far many of my friends who have heard the system will become customers as well. My head unit is the Rockville RGHR2 love the set up. I have a set of 8" rockville marine speakers and 2 sets of 6.5" polks. great sound for the money. GET YA'LL SOME!! ... show more
Reviewed in the United States on April 24, 2023 by Jeffery scarbrough
    • Excelente!!!
Speaker Size: 6.5 Inches Impedance: 4.0 Ohms
Excelente producto!!!
Reviewed in the United States on February 16, 2026 by Michel Hdez

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