---
product_id: 78487996
title: "SS8P 400W 8\" Slim Under-Seat Active Subwoofer, High-Level Inputs, Cast Aluminum Enclosure, for Car/Truck Audio Systems"
brand: "rockville"
price: "₨90604"
currency: LKR
in_stock: true
reviews_count: 8
category: "Rockville"
url: https://www.desertcart.lk/products/78487996-ss8p-400w-8-slim-under-seat-active-subwoofer-high-level
store_origin: LK
region: Sri Lanka
---

# 2.8" slim profile 400W peak power Built-in amp & easy install SS8P 400W 8" Slim Under-Seat Active Subwoofer, High-Level Inputs, Cast Aluminum Enclosure, for Car/Truck Audio Systems

**Brand:** rockville
**Price:** ₨90604
**Availability:** ✅ In Stock

## Summary

> 🎵 Big Bass, Zero Bulk — Feel the Beat Without the Bulk!

## Quick Answers

- **What is this?** SS8P 400W 8" Slim Under-Seat Active Subwoofer, High-Level Inputs, Cast Aluminum Enclosure, for Car/Truck Audio Systems by rockville
- **How much does it cost?** ₨90604 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/78487996-ss8p-400w-8-slim-under-seat-active-subwoofer-high-level)

## Best For

- rockville enthusiasts

## Why This Product

- Trusted rockville brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Custom-Tailored Sound:** Adjust bass boost, phase, and gain controls to fine-tune your audio experience exactly how you like it.
- • **Plug & Play Simplicity:** Integrated amplifier with high-level inputs and auto turn-on technology ensures a hassle-free, clean installation.
- • **Sleek Under-Seat Design:** Slim 2.8" profile fits discreetly under most vehicle seats, perfect for maximizing cabin space in cars, trucks, and SUVs.
- • **Durable & Cool Performance:** Cast aluminum enclosure dissipates heat efficiently, guaranteeing long-lasting reliability on every drive.
- • **Powerful Bass, Minimal Footprint:** 400W peak power with a compact 8" subwoofer delivers immersive low frequencies without sacrificing space.

## Overview

The Rockville SS8P is a high-performance 8" active subwoofer delivering 400W peak power in a slim 2.8" under-seat design. Featuring a built-in amplifier with adjustable controls and a durable cast aluminum enclosure, it offers easy installation and powerful, customizable bass for cars, trucks, and SUVs. Ideal for professionals who demand premium sound without compromising space.

## Description

The Rockville SS8P 400W 8" Slim Under-Seat Active Subwoofer adds deep, impactful bass to your car or truck audio system without taking up valuable space. With a compact 2.8" profile, it fits neatly under most vehicle seats, making it ideal for cars, trucks, and SUVs where space is limited.Powerful Audio: An 8" subwoofer delivers 400 watts of peak power and 100 watts RMS, producing rich low-end sound for a more dynamic listening experience.Compact Fit: Slim and sleek, it installs discreetly under your seat, leaving your trunk space free.Simple Setup: Features a built-in amplifier with high-level inputs, auto turn-on technology, and included mounting hardware for a clean, straightforward installation.Customizable Sound: Fine-tune your audio with adjustable bass boost, phase control, low pass filter, and input sensitivity.Reliable Build: The cast aluminum enclosure ensures efficient heat dissipation and durability, built to handle daily driving conditions.Whether you're upgrading a factory system or enhancing your commute, the Rockville SS8P offers big bass in a small footprint-ideal for music lovers who want high-performance sound in any vehicle.

Review: Great Sound! - Great sub! Easy install and the quality is there. The 10’ sub gives a great thump and fills the lower end nicely. It won’t rattle windows but the sound is clear and crisp. It does not sound distorted. The enclosure is compact, sturdy and fits under my seat. I will say that sitting in different areas of the car change the fullness of the sound. I have it under my driver seat and it sounds great but when I sit in the passenger rear seat, I don’t hear the bass as profound as I do when I’m sitting in the driver seat. Overall, I would highly recommend it. Especially for the price compared to some of the other products on here. I used a Boss 8gauge amp wire kit for my install and works perfect. Maybe a 4gauge would be preferred to prevent any overheating but an 8 is good enough. Oxygen Free cables would be the go to but I cheaped out. If you’re on the fence about it let me give you the nudge to get it! I think it’s great and worth the 100$ for an inclusive compact sub. DO IT!!!
Review: Overall Good Subwoofer to fill in mid-bass - I have a 1993 Saturn SL1 and I have been trying to get adequate bass in the car. For one the car is not very sound proof, you can hear all the road noise, bumps and what not's. The trunk for some reason has very good sound proofing, so it is hard to pass bass from the trunk to the passenger compartment. My set up is fairly simple, I have 2 Crunch PA1400.2 running front and rear, I have a JBL 400w RMS running Rockford Fosgate Prime Dual 10" Sub Box in the trunk. The issue is I can get the thump, but I am missing the mid to mid-bass in the passenger compartment. Since I do not want to cut holes in the rear door to mount additional speakers I found this and thought maybe this will work. I mounted it on the rear parcel shelf right in between the 2 rear speakers. I set the trunk Rockford Fosgate Prime Dual 10 crossover to run from dc to 90 HZ and set the Rockville SS8P 400w 8" Slim crossover to run from 90 HZ to 125 HZ and set the High-pass filter on the front and rear to cut off at 100 HZ. Now you want to talk about bass, this fills in great as a mid to mid-base speaker. I get mid to mid-base fill-in in the passenger compartment and I get the punch and hard hitting base from my subs in the trunk. The product has good built quality, it was easy to install even though i did not install under my seat (as it would not fit) I did call the MFG to find out if mounting it on the parcel shelf with it exposed to direct sunlight would be an issue and they said no it would not as it would have ample air flow, and direct sunlight on the top would not affect the electronics. The manual is straight forward, basically 3 wires, Positive (red), Ground (black) and remote turn on (blue), and RCA plugs. I just wired it into my distribution block, placed on the parcel shelf with adhesive and i was done, did not use the remote control as my deck has that feature built in. I know that my installation may not be standard, or I may not be using the product as designed a "SUBWOOFER" but as a mid to mid-base driver it delivers good solid reproduction in those ranges ( 90 HZ to 125 HZ), no distortion, no rattle in the cone, good disbursement of frequencies. This product did what I wanted it to do was fill in the mid to mid-base range. If you read my review please understand that I am not using this as a "SUBWOOFER", I cannot tell you how it preforms in that aspect, but I can tell you this is a solid product, has good build quality, has good sound ( in reference to my application of the product), has good customer and Technical Support Services, and for only $100 or so a good value.

## Features

- DEEP BASS PERFORMANCE: Delivers 400W peak power with an 8" subwoofer for rich, immersive low frequencies in your car or truck audio system.
- SPACE-SAVING DESIGN: Slim 2.8" profile fits under most vehicle seats, maximizing space while providing powerful bass for small cars, trucks, or SUVs.
- BUILT-IN AMPLIFIER: Integrated amp simplifies setup, with high-level inputs and auto turn-on technology, plus adjustable controls for bass, phase, and gain.
- EASY INSTALLATION: Includes mounting hardware and remote bass knob for quick setup; compatible with factory or aftermarket audio systems.
- DURABLE CONSTRUCTION: Cast aluminum enclosure helps dissipate heat and keeps the subwoofer cool, ensuring long-lasting, reliable performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B079PRCP9W |
| Audio Driver Size | 8 Inches |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #7,949 in Electronics ( See Top 100 in Electronics ) #30 in Car Component Subwoofers |
| Color | black |
| Compatible Devices | Car, Truck |
| Control Method | Remote |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.4 4.4 out of 5 stars (3,505) |
| Date First Available | February 8, 2018 |
| Department | vehicle-subwoofers |
| Global Trade Identification Number | 00819216020937 |
| Impedance | 4 Ohms |
| Included Components | Subwoofer |
| Input Voltage | 300 Millivolts |
| Is Discontinued By Manufacturer | No |
| Is Waterproof | False |
| Item Weight | 8.78 pounds |
| Item model number | SS8P |
| Manufacturer | Rockville |
| Material | Aluminum |
| Maximum Range | 10 Meters |
| Model Name | SS8P |
| Mounting Type | Under Seat Mount |
| Number of Items | 496 |
| Product Dimensions | 16"D x 12"W x 5"H |
| Recommended Uses For Product | Car |
| Signal-to-Noise Ratio | 90 dB |
| Speaker Size | 8 Inches |
| Speaker Type | Subwoofer |
| Special Feature | Subwoofer, Waterproof, USB Charging, Built-in Microphone |
| Specific Uses For Product | Vehicle sound systems |
| Style | 8” Under-Seat |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 8 Inches |
| Surround Sound Channel Configuration | 1.0 |
| UPC | 819216020937 |
| Unit Count | 1.0 Count |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Woofer Diameter | 8 Inches |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** Rockville
- **Connectivity Technology:** Bluetooth
- **Frequency Response:** 20 Hz
- **Speaker Maximum Output Power:** 400 Watts

## Images

![SS8P 400W 8" Slim Under-Seat Active Subwoofer, High-Level Inputs, Cast Aluminum Enclosure, for Car/Truck Audio Systems - Image 1](https://m.media-amazon.com/images/I/710QlUy+RzL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Sound!
*by L***O on September 11, 2025*

Great sub! Easy install and the quality is there. The 10’ sub gives a great thump and fills the lower end nicely. It won’t rattle windows but the sound is clear and crisp. It does not sound distorted. The enclosure is compact, sturdy and fits under my seat. I will say that sitting in different areas of the car change the fullness of the sound. I have it under my driver seat and it sounds great but when I sit in the passenger rear seat, I don’t hear the bass as profound as I do when I’m sitting in the driver seat. Overall, I would highly recommend it. Especially for the price compared to some of the other products on here. I used a Boss 8gauge amp wire kit for my install and works perfect. Maybe a 4gauge would be preferred to prevent any overheating but an 8 is good enough. Oxygen Free cables would be the go to but I cheaped out. If you’re on the fence about it let me give you the nudge to get it! I think it’s great and worth the 100$ for an inclusive compact sub. DO IT!!!

### ⭐⭐⭐⭐⭐ Overall Good Subwoofer to fill in mid-bass
*by R***E on February 8, 2019*

I have a 1993 Saturn SL1 and I have been trying to get adequate bass in the car. For one the car is not very sound proof, you can hear all the road noise, bumps and what not's. The trunk for some reason has very good sound proofing, so it is hard to pass bass from the trunk to the passenger compartment. My set up is fairly simple, I have 2 Crunch PA1400.2 running front and rear, I have a JBL 400w RMS running Rockford Fosgate Prime Dual 10" Sub Box in the trunk. The issue is I can get the thump, but I am missing the mid to mid-bass in the passenger compartment. Since I do not want to cut holes in the rear door to mount additional speakers I found this and thought maybe this will work. I mounted it on the rear parcel shelf right in between the 2 rear speakers. I set the trunk Rockford Fosgate Prime Dual 10 crossover to run from dc to 90 HZ and set the Rockville SS8P 400w 8" Slim crossover to run from 90 HZ to 125 HZ and set the High-pass filter on the front and rear to cut off at 100 HZ. Now you want to talk about bass, this fills in great as a mid to mid-base speaker. I get mid to mid-base fill-in in the passenger compartment and I get the punch and hard hitting base from my subs in the trunk. The product has good built quality, it was easy to install even though i did not install under my seat (as it would not fit) I did call the MFG to find out if mounting it on the parcel shelf with it exposed to direct sunlight would be an issue and they said no it would not as it would have ample air flow, and direct sunlight on the top would not affect the electronics. The manual is straight forward, basically 3 wires, Positive (red), Ground (black) and remote turn on (blue), and RCA plugs. I just wired it into my distribution block, placed on the parcel shelf with adhesive and i was done, did not use the remote control as my deck has that feature built in. I know that my installation may not be standard, or I may not be using the product as designed a "SUBWOOFER" but as a mid to mid-base driver it delivers good solid reproduction in those ranges ( 90 HZ to 125 HZ), no distortion, no rattle in the cone, good disbursement of frequencies. This product did what I wanted it to do was fill in the mid to mid-base range. If you read my review please understand that I am not using this as a "SUBWOOFER", I cannot tell you how it preforms in that aspect, but I can tell you this is a solid product, has good build quality, has good sound ( in reference to my application of the product), has good customer and Technical Support Services, and for only $100 or so a good value.

### ⭐⭐⭐⭐ Temper your expectations
*by D***Y on August 24, 2025*

It's ok. I placed my powered sub in the back of my Prius, I can hear it but not anything crazy. Decent mids, probably like 80hz but definitely not getting anything 50hz or lower. Was hoping for something a bit louder and lower in the Hz range. Definitely nothing close to 800W, not even sure why the packaging uses that number. I even doubt the 200W RMS rating. Sounds like something closer to 100W. Pros: Small footprint, could fit under my seat Adds some mid bass Bass knob works and is pretty nice Value is pretty decent, especially compared to the price of other name brands You are not going to go deaf lol Cons: Not loud, it reaches its peak at about 50% of my volume, speakers overwhelm it and hard to hear when car is moving with wind noise. Nowhere close to sounding like 800W peak. If you are just looking for a bit of bass, this is not a bad starting point. If you are looking for deeper bass, definitely not for you. This will likely be enough for like 80% of the population.

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-14*