Search  for anything...

Rockville RVB8.1A 8 Inch 300W Powered Car Subwoofer/Sub Enclosure Box, 4-Ohm, Compact Design, Deep Bass, Wired Bass Remote, for Car Audio Enthusiasts

  • Based on 180 reviews
Condition: New
Checking for the best price...
$94.95 Why this price?
Save $45.04 was $139.99

Buy Now, Pay Later


As low as $15.83 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Audiosavings

Arrives Thursday, Aug 27
Order within 3 hours and 16 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Features

  • POWERFUL BASS OUTPUT: Delivers 300W peak power (200W RMS) with an 8-inch subwoofer, producing deep, punchy bass that enhances car audio systems.
  • COMPACT AND EASY INSTALL: Fits snugly in tight spaces with a 15-degree sloped enclosure under 1 cubic foot, ideal for trunks without sacrificing cargo space.
  • VERSATILE CONNECTIVITY: Features RCA and high-level inputs for compatibility with factory or aftermarket stereos, simplifying setup for any vehicle.
  • CUSTOMIZABLE SOUND: Adjustable low-pass crossover (30Hz-150Hz) and bass boost EQ, plus a wired dashboard bass remote for precise tuning.
  • DURABLE CONSTRUCTION: Built with an anti-vibration MDF cabinet and Kevlar-reinforced cone, ensuring reliable performance and clear sound quality.

Brand: Rockville


Speaker Maximum Output Power: 300 Watts


Frequency Response: 38 Hz


Connectivity Technology: RCA


Audio Output Mode: [Default]


Audio Output Mode: [Default]


Mounting Type: Tabletop Mount


Enclosure Material: Kevlar Reinforced Pulp, Double Laminated Foam


Speaker Type: Subwoofer


Antenna Location: car


Color: Black


Is Waterproof: FALSE


Warranty Type: Limited


Control Method: Remote


Speaker Size: 10 Inches


Woofer Diameter: 8 Inches


Specific Uses For Product: car, vehicle audio systems


MP3 player: No


Controller Type: Remote Control


Speaker Maximum Output Power: 300 Watts


Input Voltage: 5 Volts


Unit Count: 1.0 Count


Item Dimensions D x W x H: 13"D x 12.5"W x 12"H


Item Weight: 16.06 Pounds


Compatible Devices: Car's Audio System, Car's Infotainment System, Smartphone


Compatible with Vehicle Type: Car


Power Source: Corded Electric


Brand: Rockville


Model Number: RVB8.1A


Model Name: RVB8.1A


Built-In Media: Enclosed Subwoofer^Remote Bass Knob^Remote Bass Knob Wire^Mounting Screws^Power Wire/Ground Wire Harness^High Level Input Wire^User Manual


Warranty Description: 1 year manufacturer


Number of Items: 1


Customer Package Type: Standard Packaging


Series Number: 81


UPC: 613815612162


Global Trade Identification Number: 62


Manufacturer: Audiosavings


Frequency Response: 38 Hz


Number of Audio Channels: 8.1


Impedance: 4 Ohms


Connectivity Technology: RCA


Wireless Technology: No Wireless Communication Technology


Subwoofer Connectivity Technology: Wired


Connectivity Protocol: RCA, speaker level


Audio Driver Type: Dynamic Driver


Audio Driver Size: 8.03 Inches


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Aug 27

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
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Don't hesitate... worth every penny
This subwoofer is great! Very easy to hook up to factory stereo system....took maybe a ½ hour to complete.....I would recommend this product to anyone that wants to add some low end bass to their vehicle
Reviewed in the United States on March 19, 2026 by Greg Hall

  • Little thumper.
Perfect addition to my Mazda 3 Bose system that was lacking low end. It thumps with thick Bass. Second Rockville sub and pleased with the performance at a fantastic price. Setup was easy. Nice adjustable 8" sub with amp built in.
Reviewed in the United States on December 8, 2025 by Hi there I'm a real consumer

  • You WILL need to buy more cables
The sub came in fairly quickly so pretty decent shipping timing, less than a week. Opened the box & found the high level input speaker wires that are only a couple feet long, the *gain remote* to put to the dash & some screws for the gain remote. No power wire, RCA cables, remote wire, or ground wire, and the high level speaker wires they include probably won’t reach past your trunk if you need them to. They have another set of this sub that includes pretty much all the wires necessary for under $100, but this specific listing doesn’t include them. Also, if you drive a newer Kia Forte with no rear factory sub & speakers in the doors, GOOD LUCK! Installation is a pain in the behind since my specific backseats don’t fold down. I haven’t gotten it to work yet since my car is a pain to get wired to, but I won’t knock them for my car’s issues. Will update if/when I get it working on how the sound quality is. 12/19/22. Edit 12/22/22: Got it working right, mis-wired on my end & some help from some buddies got it going, for the size of it this thing packs a punch, the trunk is practically sealed from the cabin & the sub has no problems at all rattling my mirrors & the backseats are LOUD. not sure you can get better for the price especially since it’s not even broken in yet, this is all from first day use. played all genres of music on it, with rock & metal it adds that extra depth to the bass & drums that makes it sound more alive & with rap the 808s pound to really make it a trunk shaker. not sure why some people said it wasn’t very powerful, as long as it’s tuned right it’ll definitely surprise you with how good it bumps. ... show more
Reviewed in the United States on December 19, 2022 by Nick H

  • Inexpensive upgrade
Inexpensive upgrade for a factory radio. A subwoofer is not only for modern techno music, it improves anything that uses a drum and even speaking. Kept the original deck in a 04 Grand Marquis only replaced rear speakers, because I had them on hand and needed to wire this unit to the speaker wires directly, which can be done with this setup. Sounds like night and day difference. ... show more
Reviewed in the United States on February 1, 2026 by gord66

  • Big bass for a small price
Unbelievable sound for the price fits under the seat of my golf cart and sounds amazing
Reviewed in the United States on January 28, 2026 by Toby T

  • Dead on arrival.
Powered subwoofer shipped dead out of the box. Typical importer of cheap Chinese junk with no quality control. From the other reviews maybe I'll just use the enclosure for something else rather that waste time trying to return and get a refund. Glad it only cost me <100 to learn the hard way about Rockville Audio. Look at Trust Pilot for real reviews. Also, the heatsinking for the rated power is minimal. ... show more
Reviewed in the United States on January 10, 2026 by Jayne Grodon

  • Worth it
Good product
Reviewed in the United States on March 13, 2026 by Manav

  • Rock in
Nice looking with good quality
Reviewed in the United States on February 4, 2026 by peter athans

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...