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Rockville

Rockville W8K9D4 2000W Peak 8-Inch Car Audio Subwoofer Dual 4-Ohm, High-Power Output, Durable Build, Deep Bass, for Car Audio Enthusiasts

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Availability: In Stock.
Fulfilled by Audiosavings
Arrives Jul 30 ā€“ Aug 1
Order within 20 hours and 38 minutes
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Speaker Size: 8.0 Inches


Impedance: 4.0 Ohms


Features

  • HIGH-POWER PERFORMANCE:- Delivers 2000W peak power and 500W RMS for deep, resonant bass. Dual 4-ohm voice coils ensure flexible wiring options for optimal amplifier compatibility, ideal for car audio systems
  • DURABLE CONSTRUCTION:- Features a cast aluminum basket and ultra-stiff non-pressed paper cone, built to handle high power with minimal distortion. High-grade glue withstands extreme temperatures.
  • SUPERIOR SOUND QUALITY:- Thick foam surround and black stitching cone reinforcement provide clear, distortion-free bass. Frequency response of 48Hz-800Hz suits various music genres.
  • EFFICIENT HEAT DISSIPATION:- Vented T-yoke and 2.5-inch 4-layer ASV voice coils, wound with USA-made OFC wire, maintain performance during extended use, ensuring long-lasting reliability.
  • EASY INSTALLATION:- Custom Rockville mounting gasket simplifies airtight setup. Compact 7.32-inch cutout and 5.91-inch mounting depth fit most enclosures, perfect for custom car audio builds.

Description

Rockville W8K9D2 K9 Series 8" Dual4-Ohm Car Subwoofer. Peak Power Handling: 2000 Watts. Program Power Handling: 1000 Watts. CEA Rated RMS Power Handling: 500 Watts. 2. 5" 4-Layer ASV Voice Coils Wound with OFC Wire Made in USA. This voice coil is stable up to 200 degrees Celsius The voice coil windings are made in the USA . Double Stacked 122 Oz High Quality Magnet. Cast Aluminum Basket With Black Sanded Finish Makes This Sub Very Efficient And Lighter Weight. Two Chrome-Plated Binding Post Terminals. 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. Black Stitching Cone Reinforcement Ensures Long Life. New Ultra- stiff Polypropylene (PP) Dust cap. 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. Poly cotton spider with very good elasticity. Cutout Diameter: 7. 32ā€ inches. Mounting Depth: 5. 91ā€ inches. Frequency Response: 48 hz- 800hz. 10mm T-Yoke + 10mm Washer. Sensitivity: 81. 2dB. Sealed Enclosure Volume: 0. 28-0. 42 Cubic Feet. Vented/Ported Enclosure Volume: 0. 64-0. 92 Cubic Feet. Weight: 18. 74 Lbs. . Shipping Weight: 20. 95 Lbs. . Shipping Box Dimensions: 11. 42"x 11. 42"x11. 81" Inches

Brand: Rockville


Speaker Maximum Output Power: 2000 Watts


Frequency Response: 800 Hz


Connectivity Technology: wired


Audio Output Mode: Mono


Audio Output Mode: Mono


Mounting Type: Car Mount


Enclosure Material: Aluminum, Paper


Speaker Type: Subwoofer


Antenna Location: car


Subwoofer Diameter: 8 Inches


Color: Black


Is Waterproof: FALSE


Warranty Type: Limited


Control Method: Voice


Speaker Size: 8 Inches


Woofer Diameter: 8 Inches


Specific Uses For Product: Car Audio


MP3 player: No


Controller Type: Voice control


Frequency Response: 800 Hz


Number of Audio Channels: 2.1


Impedance: 4 Ohms


Connectivity Technology: wired


Subwoofer Connectivity Technology: Wired


Connectivity Protocol: wired


Power Source: Corded Electric


Brand: Rockville


Model Number: W8K9D4


Model Name: W8K9D4


Built-In Media: Car Audio Subwoofer


Warranty Description: 1 year


Number of Items: 1


UPC: 819216023181


Global Trade Identification Number: 81


Manufacturer: Rockville


Item Type Name: Rockville W8K9D4 8" Inch 2000w Peak Car Audio Subwoofer Dual 4-Ohm Sub 500w RMS CEA Rated


Speaker Maximum Output Power: 2000 Watts


Input Voltage: 12 Volts


Unit Count: 1.0 Count


Item Dimensions D x W x H: 11"D x 11"W x 11"H


Item Weight: 17 Pounds


Compatible Devices: Car Audio System, Laptop, MP3 Player, Smartphone, Tablet


Compatible with Vehicle Type: Car


Audio Driver Type: Dynamic Driver


Audio Driver Size: 8 Inches


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jul 30 ā€“ Aug 1

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 šŸ‘šŸ¼šŸ‘šŸ¼
Speaker Size: 10.0 Inches Impedance: 4.0 Ohms
I have too say am very impressed!! Iā€™ve had in the pass 2 kickers L7 also 2 12 JL ā€˜s Iā€™ve own plenty of 12 inch speakers with plenty of cheater amps Iā€™ve Ben around the block as Iā€™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 didnā€™t want to put 2 12ā€™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 didnā€™t fit I didnā€™t realize it was tall but it did.. I also sealed everything back there I used my alpine cheater amp as itā€™s only one Chanel And small amp itā€™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 12ā€™s in there trunk couldnā€™t believe I was pushing 1 10 inch.. anyone reading this that donā€™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 didnā€™t install that because itā€™s only 1 10 inch subwoofer and the most Iā€™ll give this speaker is 600 to 700 watts Without blowing the speaker and trust me thatā€™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 wouldnā€™t use the ZR1000 I would only use my ZR1000 if I had two 12ā€™s my point is u donā€™t need to use a kicker ZR1000 cheater amp on 1 10 inch subwoofer u will blow this speaker ..I donā€™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 doesnā€™t know to much ..agin for the price of this speaker u can beat it ..I went with speaker because I didnā€™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 canā€™t believe the setup I have it hits nice I bought a nother one thatā€™s how good these speakers are I have no complaint I canā€™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
    • 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
    • Integrity proven
Speaker Size: 8.0 Inches Impedance: 4.0 Ohms
Was running hippo massive 8s in my F150. Regrets cause both 8s failed within months, to my surprise the Rockville 8s W8k9d4s have a very impressive bass and have handled higher volume. Definitely integrity proven, Im happy.
Reviewed in the United States on February 19, 2026 by Johnny G
    • ā¤ļøā¤ļø ā¤ļøā¤ļø
Speaker Size: 15.0 Inches Impedance: 4.0 Ohms
Review Image by Omar Torres
Wooooow awesome I bet it sounds so good thank you šŸ™‚ I would install it on Friday my day off
Reviewed in the United States on April 22, 2026 Reviewed in the United States on April 22, 2026 by Omar Torres
    • Awesome Subs Awesome Subs
Speaker Size: 8.0 Inches Impedance: 4.0 Ohms
Review Image by Coco
Review Image by Coco
The Rockville subwoofers are my pick for sound and power handling. My X8 keep popping tinsel leads. But still great X8 sub repairing it for a final third time. Went with the K9-8 to see if I can poke fun at my X8 history ....lol. The two 10 inch I picked up in February 2019. The 8 inch I bought in October 2019. The bottom two are nice for heavy excursion purposes only. Not bad for the price that I purchased them for. However, I had to repair one of the coils that was bad myself because I believe it had bottomed out. I believe that it was never correctly aligned from the manufacturer. But, it has been hanging hard now for over a year since I repaired it. So much so that it's twin coil is weaker and it sucks in on high pressures. Already purchased the materials and just have to tear it down and rebuild it. It's all being pushed by a hearty and healthy 2500 watts with no problems!!!! Hope you enjoyed my review on your subs and my pics. ... show more
Reviewed in the United States on November 2, 2019 Reviewed in the United States on November 2, 2019 by Coco
    • 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

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