Rockville USS8 Review (Tested by Experts in 2023)

Driving on long roads can be boring, even with the people around you. But with an exciting playlist and loud music sound, the long driving can be a thoughtful escape from the stressful days.

When it comes to listening and enjoying our favorite music in our vehicles, we all want to experience the best sound quality possible. That’s why many of us invest in high-quality car audio systems

However, even with the best car stereo, the sound quality can still be affected by the type of music we are listening to. Hence, a safe purchase could be a car subwoofer like Rockville USS8, which is easy to handle, quick to hook, and easily manageable in small cars.

That being said, Rockville has made our lives exciting by coming up with a wide range of subwoofers that deliver high-definition bass, and this compact model is no exception.

Here is an in-depth review of the subwoofer that unfolds its built-in features and specs.

Rockville USS8 8-Inch Under-Seat Car Subwoofer

Top Pick
Rockville USS8 Subwoofer

Rockville USS8 Subwoofer

5 star rating
5 star rating
5 star rating
5 star rating
5 star rating

 Rockville USS8 is a solid, compact, low-profile 8-inch subwoofer with a built-in amplifier rated at 600W peak power. The frequency response of 15Hz to 125Hz with multiple sounds and bass controls delivers thundering and precise bass for vehicles.

Main Features

  • 600W peak power output
  • 150W RMS power
  • 15Hz to 125Hz frequency
  • Sensitivity at 90dB
  • Bass boost EQ
  • High-level inputs

Unboxing of the Rockville USS8- Unfolding the Mystery

Rockville products have always been a mystery to us. The products surprised us with their compact size and heavy punch, but this time we were amazed by the perfect packaging with no massive plastic waste or messy packaging material.

The subwoofer came well-packed in a box from the brand. After removing the plastic that was protecting the product from any potential damage, we found a warranty card, a user manual, a power cord, a couple of connectivity cables, a remote bass knob, and mounting hardware to get it settled in no time.

I think that’s everything you need to make it functional, and we appreciate everything coming along at this great price. 


Size matters when choosing a subwoofer for a vehicle because handling an additional device wouldn’t be as easy as it sounds. Car owners must dedicate a space within the vehicle that best suits the sound delivery and connections.

This issue can be adaptable with Rockville USS8, a low-key profile featuring an 8-inches slim profile that is easy to slip under the seats.

It is only 2.9-inches thick, so it wouldn’t require a ton of space and will easily sit or mount in small cars. Also, it has a built-in amplifier, so the wiring, installation, and hooking up to the receiver should cause a hassle.

Design and Enclosure

Rockville USS8 has nothing to offer for aesthetics, and it is merely a compact box of decent quality that houses an 8-inches woofer driver and an amplifier.

There is a grill at the front and a Rockville logo at the bottom. It is designed to hide under the seats, so the looks are almost awful.


Rockville has thoughtfully designed the model and added high-level inputs with automatic turn-on technology for smooth connections with factory systems. When the smart circuit senses the audio signals, it immediately turns on the amplifier and turns off when there is no music signal.

It also has a set of low-level RCA inputs, and the red and green LED will help you indicate the functionality of the subwoofer.

Besides, the PWM MOSFET power supply takes care of both systems’ current demand and helps regulate the voltage.

Power Output

The powered car subwoofer has a 600W peak power output and 150W RMS, which is great for a small device. The 8-inches subwoofer is capable of producing great sounding bass with decent clarity and less distortion to boost the fun while driving.


MP3 and other compressed audio files are notorious for sounding terrible when played back on car audio systems. It could be due to the compression algorithm used to create these files that remove a lot of music’s original detail and richness.

Fortunately, that’s not the case with Rockville USS8. It maintains the music’s original detail and gives you enough room to adjust the sound and bass quality according to your listening preferences.

It features a bass boost function at 0-12dB @45Hz and subsonic filter ranges of 20Hz – 50Hz. It lets the woofer focuses on the individual bass notes and makes them highly hitting.

There is also a phase switch at 0 to 180 degrees and low pass filter ranges at 50-150Hz. 

Frequency Response Range

The subwoofer has the sole purpose of reproducing low-end frequencies and boosting them to sound better, hitting the notes to create vibes, and doubling the fun.

A subwoofer reduces the burden of other speakers focusing on the upper and mid-range, and the frequency response range gives a better idea about how well it can perform and to what extent it can provide high-quality bass.

Hence, the frequency response of Rockville USS8 is 15Hz-125Hz, meaning the subwoofer can be the game changer for your music listening routine and produce precise bass down to 15Hz.

Bass Performance

We all love listening to good quality music in our vehicles, aren’t we?

It is a great way to ease and unwind after a long day. But what if you could take your music listening experience to the next level? Yes, you shouldn’t miss a chance when you get the Rockville USS8 that packs a solid bass punch in a small box.

It can get super loud and create perfect harmony with other speakers. We tested it with the bass-heavy hip-hop and were amazed to hear the distinct notes with such clarity and punishment.

• Smart circuit for auto turn on
• RCA input sets
• Thermal protection circuit
• Adjustable input sensitivity
• Subsonic filter
• Low pass filter
• Muddy noise at high volume

Bottom Line

Rockville has been designing and manufacturing car audio products for decades. Their products are known for their quality, durability, and performance.

They offer an extensive range of products, including car subwoofers, and USS8 is their best-selling unit, featuring a compact profile, multiple controls, and excellent frequency response. Its built-in amp is powerful enough to fuel the woofer for high-end performance.

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