Rockville SS8P Review (Tested by Experts in 2023)

If you’re looking for an 8-inch subwoofer that’s both powerful and affordable, the Rockville SS8P 400W might be the perfect option.

In this product review, we’ll take a closer look at the features and specs of the Rockville SS8P 400W subwoofer and explore how it will be an impeccable addition to your car audio system.

In order for you to evaluate if this subwoofer is the best fit for your music-listening needs, we’ll also go over some of its advantages and disadvantages.

Rockville SS8P 400W 8-Inch Car Subwoofer

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Rockville SS8P 400w 8-inch Slim Under-Seat Car Subwoofer

Rockville SS8P Subwoofer

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Rockville SS8P is a slim, under-seat subwoofer with 400W peak power capable of delivering enough bass to fill up the small spaces. It is easy to set and pair, and multiple controls offer personalized bass for the next-level listening experience. 

Main Features

  • PWM MOSFET power supply
  • Low pass filter
  • Phase switch
  • Bass boost EQ
  • Aluminum enclosure

Unboxing the Rockville SS8P 

Rockville SS8Pis a small, iconic underseat car subwoofer, and so does its packaging. The 8-inch small subwoofer was carefully packed in a brand box with a reasonable share of packaging material.

 Unboxing the device took us only a few minutes, and we found a subwoofer with a user manual and a power cord. There was also some mounting hardware and a remote bass knob for quick navigation. 

Instructional Guide

 While unboxing the box, we discovered an extremely brief manual containing all the setup and use instructions, making it useful for both beginners and experienced users.

Design and size

One of the things you’ll notice right away about the Rockville SS8P 400w 8-inch subwoofer is its sleek design. Measuring just 2.8″ deep, it’s one of the thinnest subwoofers on the market, and if you’re looking for a calm way to add some extra oomph to your car’s sound system, the Rockville SS8P is worth checking out.

Despite its slim profile, the SS8P packs a powerful punch, thanks to its 400-watt RMS amplifier and 8″ woofer. And because it’s a sealed aluminum enclosure subwoofer, you’ll get tight, accurate bass without unwanted vibrations.

The cast aluminum enclosure material also keeps the woofer cool despite heavy punishment and continuous use for good hours.


It also has a remote bass control knob, so you can easily adjust the bass level to suit your listening preferences and enjoy the banging sound while traveling on boring routes.

Additionally, the subsonic filter @ 20Hz, bass boost @45Hz, low pass filter range at 50-150Hz, and phase switch at 0 or 180 degrees come to personalize your listening experience.

Sound Quality

Now let’s talk about sound quality. As you can probably guess, the Rockville SS8P 400w 8″ sound quality is pretty good, and the high notes are clear and well-balanced.

The lows could be better, but they’re still pretty good. Overall, the sound quality is suitable for a budget subwoofer.

One thing to hold onto is that the sound quality will vary depending on how you have the subwoofer set up. If you have, it crossed over at a high frequency, and then you’re not going to get as much bass out of it as you would if you had it crossed over at a lower frequency.

Connectivity Ports

It is a well-packed subwoofer that may not give you charming vibes from the looks but provides ease when hooking up to the receiver.

With a collection of low-level and high-level speaker inputs, it is always ready to pair with any sound system you have and start showing its capabilities.

In addition to the pairing inputs and outputs, the auto turns on/off technology grabs our attention. It enables the subwoofer to catch audio signals and turns on automatically, and put off the motor when not in use.

Flexible Profile

The Rockville SS8P 400w 8″ has all the necessary mounting hardware and a quick connector to make it functional in no time. The subwoofer also comes with a built-in low-pass filter, which allows you to control the subwoofer’s frequency response.

Power Handling Capacity

When getting a subwoofer, one must concern about its power handling capacity. It decides how well the subwoofer can produce sound and to what extent it bears the punishment.

Surprisingly, the slim soundbar has a peak power handling of 400W and an RMS power of 100W. So, you can expect a heavy soundscape from the compact device.

Frequency Response Range

The Rockville SS8P 400W 8″  has a frequency response of 20Hz-150Hz. It indicates the woofer can reproduce frequencies as low as 20Hz and provide you with the thumping and hitting bass while streaming bass-heavy content.

The accuracy and distortion-free sound go a long way and give you an ideal audio output when watching movies, shows, and games.

Ease of Use

The best thing about the product is a quick hookup, easy setup, and friendly navigation properties.

This product is straightforward to use, the installation is a breeze, and the wiring harness that comes with it makes it even easier.

The Rockville SS8P 400w 8″ Slim subwoofer also comes with a remote bass knob to control the bass from the comfort of your seat.

• 2.8 inches tall
• Budget-friendly
• 400 watts of peak power
• Great for smaller cars.
• Adjustable Input Sensitivity
• Noticeable muddy noise
• Clarity is compromised at a loud volume


If you’re looking for a powerful yet slim subwoofer to add to your car’s audio system, the Rockville SS8P 400W compact Subwoofer is a great option. It’s one of the most widespread subwoofers on the market, and for an upright reason – it hits durable but doesn’t take up a lot of space.

The Rockville SS8P is also pretty affordable, making it a great option if you’re on a budget. It’s not the cheapest subwoofer out there, but it’s worth the price. 

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