Rockville SS8P 8" 400W Slim Under-Seat Active Powered Car/Truck Subwoofer 8-Inch Black
Rockville SS8P 8" 400W Slim Under-Seat Active Powered Car/Truck Subwoofer 8-Inch Black
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Rockville

Rockville SS8P 8" 400W Slim Under-Seat Active Powered Car/Truck Subwoofer 8-Inch Black

26 ratings

Key item features

  • Powerful Performance: This 8-inch active powered subwoofer delivers 400 watts peak power and 100 watts RMS for impressive low-end audio in your vehicle.
  • Slim Design: Features an ultra-thin 2.8-inch cast aluminum enclosure, engineered for easy, discreet installation under most vehicle seats.
  • Integrated Electronics: Equipped with a built-in amplifier utilizing an efficient PWM MOSFET power supply for reliable and powerful operation.
  • Flexible Connectivity: Offers high-level inputs with smart auto turn-on for seamless integration with factory stereos, alongside low-level RCA inputs.
  • Advanced Tuning: Provides comprehensive sound customization with an adjustable low pass filter (50-150Hz), subsonic filter, bass boost (0-12dB), and phase switch, plus a remote level control.
  • Robust Safeguards: Incorporates comprehensive protection circuitry against thermal issues, short circuits, and overloads, indicated by LED lights.
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Specs

Rms power rating, 100 WWoofer size, 8 inSubwoofer type, SubwooferBrand, RockvilleImpedance, 4 ohmPeak audio power handling, 400 W

About this item

Product details

The Rockville SS8P is a comprehensive all-in-one bass solution designed to deliver high-quality low-end performance in your vehicle without sacrificing valuable cargo space. Measuring only 2.8 inches thick, this slim under-seat enclosure features a built-in amplifier and an 8-inch subwoofer, making installation clean and straightforward for any car or truck. With 400 watts of peak power and 100 watts RMS, it provides a robust sound profile that mimics the performance of much larger, full-sized subwoofer systems.

Engineered for versatility, the SS8P includes high-level inputs with auto turn-on technology, allowing for seamless integration with both factory and aftermarket head units even without preamp outputs. The unit is housed in a durable cast aluminum enclosure that ensures optimal cooling during extended use. Users can fully customize their audio experience using the integrated controls for phase, low pass crossover, subsonic filter, and bass boost, all while maintaining peace of mind with built-in thermal and short circuit protection.
  • 8-inch slim under-seat active powered car subwoofer with 400 watts peak power and 100 watts RMS.
  • Ultra-thin cast aluminum enclosure design measures only 2.8 inches thick to fit easily under most vehicle seats.
  • Built-in PWM MOSFET power supply ensures efficient and reliable performance for the integrated amplifier.
  • Features high-level inputs with smart auto turn-on technology for easy installation with factory stereo systems.
  • Includes a remote subwoofer level control knob to adjust bass volume conveniently from the driver's seat.
  • Adjustable low pass filter ranging from 50Hz to 150Hz and a built-in subsonic filter at 20Hz.
  • Integrated bass boost control from 0 to 12dB at 45Hz and a 0 or 180-degree phase switch for sound tuning.
  • Comprehensive protection circuitry including thermal, short circuit, and overload protection with LED indicators.
  • Low-level RCA inputs and adjustable input sensitivity provide compatibility with a wide range of audio sources.
  • Heavy-duty mounting feet and hardware are included to ensure a secure and stable installation in your vehicle.
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Specifications

Rms power rating

100 W

Woofer size

8 in

Subwoofer type

Subwoofer

Brand

Rockville

Warranty

Warranty information

1 YEAR

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Customer ratings & reviews

4.5 out of 5 stars
stars
26 ratings20 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars65% (17)
  2. 4 stars19% (5)
  3. 3 stars12% (3)
  4. 2 stars4% (1)
  5. 1 star0% (0)

Reviews summary

Pros

  • : Fits under seat with great bass sound.
  • : Offers good sound quality at this price.
  • : Delivers strong bass and solid tone.
  • : Delivers robust low-frequency sound in a compact design.
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Showing 1-3 of 20 reviews

Aug 26, 2025
Reviewer name: Charles
Sold and shipped byAudiosavings
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Fast delivery and good product

Incentivized Review
Helpful?40RGULFQ08UE719876580
Dec 12, 2024
Reviewer name: abel
Sold and shipped byAudiosavings
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

delivery on time. easy to install. Under passenger seat on Miata 2008 and good bass..TY

Incentivized Review
Helpful?40RGULFQ08UE719876580
Jun 11, 2026
Reviewer name: Ekue
Sold and shipped byAudiosavings
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Rockville ss8p 400w 8" slim recommended

This Rockville ss8p 400w installed in the car is so powerful that I imagined it would be, in terms of sound, bass, tone, wow it's fantastic, including size and cables. The price is acceptable.

Incentivized Review
Helpful?40RGULFQ08UE719876580
Current price is $99.95
Price when purchased online
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Sold and shipped by Audiosavings
4.303633648581384 out of 5 stars
4.3 stars out of 5, based on 2009 seller reviews(4.3)
Extended holiday returns
Free Holiday returns until Jan 31