---
product_id: 270472680
title: "Earthquake Sound X84SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 4-Ohm (Pair)"
brand: "earthquake sound"
price: "¥7818"
currency: JPY
in_stock: false
url: https://www.desertcart.jp/products/270472680-earthquake-sound-x84sws-8-inch-shallow-woofer-system-under-seat
store_origin: JP
region: Japan
---

# 4-ohm impedance for optimal load 2.125" shallow mount depth 300W max power output Earthquake Sound X84SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 4-Ohm (Pair)

**Brand:** earthquake sound
**Price:** ¥7818
**Availability:** ❌ Out of Stock

## Summary

> 🚗💥 Under-seat bass that shakes up your drive—small space, massive impact!

## Quick Answers

- **What is this?** Earthquake Sound X84SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 4-Ohm (Pair) by earthquake sound
- **How much does it cost?** ¥7818 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/270472680-earthquake-sound-x84sws-8-inch-shallow-woofer-system-under-seat)

## Best For

- earthquake sound enthusiasts

## Why This Product

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

## Key Features

- • **Durable Build:** NOMEX/ROMEX spider assembly and aluminum materials built to last through every drive.
- • **Compact Powerhouse:** 8-inch woofer delivers punchy bass from a sleek 2-1/8" shallow profile.
- • **Patented Bass Tech:** Protected by 3 US patents, ensuring cutting-edge inverted cone design for max excursion.
- • **Plug & Play Upgrade:** Swap factory woofers instantly to transform your car audio experience.
- • **Seamless Under-Seat Fit:** Designed for effortless BMW & Toyota Supra MKV replacement—no modifications needed.

## Overview

The Earthquake Sound X84SWS is a pair of 8-inch shallow mount subwoofers engineered for under-seat installation in BMW and Toyota Supra MKV vehicles. With a minimal 2-1/8" mounting depth, 4-ohm impedance, and 300W max power, these patented woofers deliver deep, punchy bass without requiring any seat modifications. Built with durable NOMEX/ROMEX spider assemblies and aluminum components, they offer a plug-and-play upgrade that transforms your car audio into a premium bass experience.

## Description

Earthquake Sound corporation is the original Inventor of the shallow woofer system (sws) that produces a lot of bass from a small space. Designed to replace the BMW factory speakers that are located under the front seats, the X84SWS pair requires No modification. Simply remove the seats and replace the factory woofers with the exact-fitting sws woofers to improve the sound quality of your mobile audio. In addition to BMW cars, the sws Series are the perfect bass solution for any car. Many factories are now using woofers in small areas. To improve your bass, simply replace the factory speakers with the sws woofers.

## Features

- Car audio subwoofer with shallow 2-1/8" mounting depth for versatile placement; Compatible subwoofer replacement for BMW and Toyota Supra MKV.Impedance: 4 ohm.Power source type:Corded Electric.Speaker size:8 inches
- Inverted style cone design for maximum excursion in shallow mount applications; Protected by 3 US Patents
- 150 WRMS (300 Watts MAX) with 4-Ohm impedance
- Satisfying punchy bass from a small package - sealed enclosure is recommended
- NOMEX/ROMEX spider assembly

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06X41HPJJ |
| Additional Features | Durable |
| Age Range Description | Adult |
| Antenna Location | For Car Audio Systems |
| Audio Driver Size | 8 Inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Best Sellers Rank | #57,612 in Electronics ( See Top 100 in Electronics ) #58 in Car Component Subwoofers |
| Brand | Earthquake Sound |
| Built-In Media | Pair of Earthquake Sound X84SWS 8-inch Shallow Woofer Systems |
| Color | Black |
| Compatible Devices | MP3 Player, Smartphone, Tablet |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | 3.5mm auxiliary |
| Connectivity Technology | Auxiliary |
| Control Method | Touch |
| Controller Type | Corded Electric |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 3.7 3.7 out of 5 stars (71) |
| Enclosure Material | NOMEX/ROMEX, Aluminum |
| Global Trade Identification Number | 00689759101239 |
| Impedance | 4 Ohms |
| Is Waterproof | False |
| Item Dimensions D x W x H | 30.5D x 22.9W x 27.9H centimeters |
| Item Weight | 1.68 kg |
| Manufacturer | Earthquake Sound |
| Model Name | SWS-8X |
| Model Number | X84SWS |
| Mounting Type | Under Seat |
| Number Of Circuits | 1 |
| Number of Audio Channels | 2.0 |
| Number of Items | 2 |
| Power Source | Corded Electric |
| Series Number | 1 |
| Speaker Maximum Output Power | 300 Watts |
| Speaker Size | 8 Inches |
| Speaker Type | Subwoofer |
| Specific Uses For Product | For Car Audio Systems |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 8 Inches |
| Tweeter Diameter | 1 Inches |
| UPC | 005669899965 689759101239 |
| Warranty Type | Limited |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 8 Inches |

## Product Details

- **Audio output mode:** Stereo
- **Brand:** Earthquake Sound
- **Connectivity technology:** Auxiliary
- **Mounting type:** Under Seat
- **Speaker maximum output power:** 300 Watts

## Images

![Earthquake Sound X84SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 4-Ohm (Pair) - Image 1](https://m.media-amazon.com/images/I/71CFBbtP+aL.jpg)

## Available Options

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

## Frequently Bought Together

- Earthquake Sound X84SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 4-Ohm (Pair)
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**Shop now:** [https://www.desertcart.jp/products/270472680-earthquake-sound-x84sws-8-inch-shallow-woofer-system-under-seat](https://www.desertcart.jp/products/270472680-earthquake-sound-x84sws-8-inch-shallow-woofer-system-under-seat)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-26*