---
product_id: 41726855
title: "Sound i82SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 2-Ohm (Pair)"
brand: "earthquake"
price: "R14873"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Earthquake"
url: https://www.desertcart.co.za/products/41726855-sound-i82sws-8-inch-shallow-woofer-system-under-the-seat
store_origin: ZA
region: South Africa
---

# 2-ohm impedance for OEM amp compatibility 2-1/8" ultra-shallow mount depth 150W RMS / 300W max power output Sound i82SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 2-Ohm (Pair)

**Brand:** earthquake
**Price:** R14873
**Availability:** ✅ In Stock

## Summary

> 🚗💥 Transform your ride with bass that fits under your seat—feel the quake, not the bulk!

## Quick Answers

- **What is this?** Sound i82SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 2-Ohm (Pair) by earthquake
- **How much does it cost?** R14873 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/41726855-sound-i82sws-8-inch-shallow-woofer-system-under-the-seat)

## Best For

- earthquake enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** 8-inch inverted cone design delivers punchy bass from a slim 2-1/8" mounting depth.
- • **Patented Innovation:** Protected by 3 US patents, engineered for maximum excursion in tight spaces.
- • **Seamless OEM Upgrade:** Direct-fit replacement for BMW & Toyota Supra MKV under-seat woofers—no modifications needed.
- • **Premium Build Quality:** Durable aluminum frame with NOMEX/ROMEX spider assembly ensures longevity and crisp bass.
- • **Plug & Play Bass Boost:** Compatible with factory 2-ohm amplifiers for instant sound quality upgrade.

## Overview

The Earthquake Sound i82SWS is a pair of 8-inch shallow mount subwoofers designed for under-seat installation in vehicles like BMW and Toyota Supra MKV. With a minimal 2-1/8" mounting depth and 2-ohm impedance, these patented woofers deliver up to 150W RMS (300W max) of punchy bass without requiring any modifications. Engineered for seamless OEM replacement, they enhance factory sound systems with premium materials and easy installation, making them the ultimate compact bass upgrade for discerning car audio enthusiasts.

## Description

Earthquake Sound is the original Inventor of the shallow woofer system (sws) that produces a lot of bass from a small space. Since many OEM amplifiers are now coming with a 2-ohm impedance, the 2-ohm i82SWS pair is designed to replace the BMW factory speakers that are located under the front seats Without any modification required. 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.

Review: Way better than OEM! - A must have upgrade over OEM or any other underseat woofer. This pairs great with a micro amp and fits perfectly replacing the OEM woofers. Better than AlphaOne or BavSound.
Review: Improvement even without amp in BMW HK Systems - I have a 2018 BMW 3 series with the harmon kardon system. The underseat woofers are almost unnoticeable and installing these, even without an amplifier, is a modest, worthwhile improvement. The manual claims a 3db increase even on stock amplification. The speakers are easy to install; the whole thing took about 90 minutes, no requirement to modify/cut anything. I'd recommend 1) wiring the ring gasket (there is a BMW harness included), 2) installing the gasket, and 3) then inserting the speaker. You only need a T50 socket wrench bit for moving the seat and a T20 to remove the cover and mounting screws.

## Features

- Car audio subwoofer with shallow 2-1/8" mounting depth for versatile placement; Compatible subwoofer replacement for BMW and Toyota Supra MKV.Impedance: 2 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 Watts RMS (300 Watts MAX) with 2-Ohm impedance
- Satisfying punchy bass from a small package - sealed enclosure is recommended
- NOMEX/ROMEX spider assembly

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06X41HZ75 |
| Additional Features | Low Profile Mounting |
| Antenna Location | For Car Audio |
| Audio Driver Size | 8 inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Surround |
| Best Sellers Rank | #51,146 in Electronics ( See Top 100 in Electronics ) #176 in Car Component Subwoofers |
| Brand | EARTHQUAKE |
| Built-In Media | i82SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers(2)^Gaskets(2) |
| Color | black |
| Compatible Devices | Universal |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | wired |
| Connectivity Technology | wired |
| Control Method | Touch |
| Controller Type | Corded Electric |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.1 out of 5 stars 94 Reviews |
| Enclosure Material | Aluminum |
| Global Trade Identification Number | 00689759101222 |
| Impedance | 2 ohm |
| Is Waterproof | FALSE |
| Item Dimensions D x W x H | 12"D x 9"W x 11"H |
| Item Weight | 3.5 pounds |
| Manufacturer | EARTHQUAKE |
| Material | Aluminum |
| Model Name | i82SWS |
| Model Number | i82SWS |
| Mounting Type | Car Mount,Shallow Mount |
| Number Of Circuits | 2 |
| Number of Audio Channels | 2 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Processor Count | 2 |
| Speaker Maximum Output Power | 300 watts |
| Speaker Size | 8 inches |
| Speaker Type | Subwoofer |
| Specific Uses For Product | car audio upgrades, improving bass response in vehicles, shallow mount subwoofer installations |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 8 inches |
| UPC | 689759101222 |
| Unit Count | 1 Count |
| Warranty Description | Limited Manufacturer's Warranty |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 8 inches |

## Product Details

- **Audio Output Mode:** Surround
- **Brand:** EARTHQUAKE
- **Connectivity Technology:** wired
- **Mounting Type:** Car Mount,Shallow Mount
- **Speaker Maximum Output Power:** 300 Watts

## Images

![Sound i82SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 2-Ohm (Pair) - Image 1](https://m.media-amazon.com/images/I/71grTlKsX0L.jpg)

## Available Options

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

## Questions & Answers

**Q: How do they sound in a door?**
A: I have a 96 s10 and the hardware in my door rattles with it installed. So, in my experience, they sound terrible in the doors. I did put them in a box and they sound amazing for a pair of 6.5s

**Q: Will this fit under seat in F32 BMW 4 Series? The Bavarian Motors for a one is like $300 this is a third of the price if it's better than the stock on**
A: Yes, and they are the best replacement subs as long as you also upgrade the amp to the match up7bmw. They are good on factory amp but with the increased power, they are stellar.I had mine running 24hz to 86 hz with 30 db/octave high pass and 24 db/octave low pass xovers on the match 7. Absolutely accurate, no cone distortion, just absolutely transparent and unlocalizable bass.

**Q: are these a single 2 ohm voice coil**
A: Hi I purchased the pair of sws 6.5x which are single 4 ohms coil the sws 8.are also has a single voice coil, but at 2 ohms each. You can double check at amazons web site.  Worth the upgrade if you really like to feel the music.

**Q: Will these fit my 2013 bmw 750i xdrive?**
A: all the BMW sub is 8ich

## Customer Reviews

### ⭐⭐⭐⭐⭐ Way better than OEM!
*by T***T on May 13, 2026*

A must have upgrade over OEM or any other underseat woofer. This pairs great with a micro amp and fits perfectly replacing the OEM woofers. Better than AlphaOne or BavSound.

### ⭐⭐⭐⭐⭐ Improvement even without amp in BMW HK Systems
*by C***H on November 2, 2025*

I have a 2018 BMW 3 series with the harmon kardon system. The underseat woofers are almost unnoticeable and installing these, even without an amplifier, is a modest, worthwhile improvement. The manual claims a 3db increase even on stock amplification. The speakers are easy to install; the whole thing took about 90 minutes, no requirement to modify/cut anything. I'd recommend 1) wiring the ring gasket (there is a BMW harness included), 2) installing the gasket, and 3) then inserting the speaker. You only need a T50 socket wrench bit for moving the seat and a T20 to remove the cover and mounting screws.

### ⭐ Not good speakers, go elsewhere
*by S***R on December 24, 2023*

I have run 2 of these off a Kicker Key500.1, set gains with my Fluke DMM to 100w RMS a piece to see how they handle better power than BMW HiFi amp (40w RMS a piece). I had to basically not send any power at these at all, they start cooking pretty bad. I have headaches when I drive from the glue burning up on the voice coils. They just dont stay cool. I also run an RE Audio XXX 12" on 2000-2400w RMS in same vehicle. The SW8s were more for 60-150hz and my XXX for 25-60hz. Either way, there is no way they could ever handle 150w RMS a piece. Not happy with these at all. I will probably buy a couple Kicker 8" L7Ts and fabricate custom enclosures under the seat for them for what Im looking for, and send those an actual 500w. Read positive things, but as an installer, I have blown 2 subwoofers. 1 was over 20 years ago on my second install for a buddy in high school. The second was because a customer insisted on me using a crummy $75 used Crunch walmart amp to try and send some Planet Audio 15s 2000w (some of the worst amps in the market). If you run an unclipped signal to these, I wouldn't push em past 60w a piece, they simply cannot handle any power. They sound alright, but after 1 minute I cannot stand the voice coils burning up. These speakers are not for me.

## Frequently Bought Together

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-08-19*