---
product_id: 41726855
title: "Earthquake Sound i82SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 2-Ohm (Pair)"
brand: "earthquake"
price: "$500.56"
currency: USD
in_stock: true
reviews_count: 13
category: "Earthquake"
url: https://www.desertcart.us/products/41726855-earthquake-sound-i82sws-8-inch-shallow-woofer-system-under-seat
store_origin: US
region: United States of America
---

# 150W RMS / 300W max power 2-1/8" shallow mounting depth 8-inch dynamic driver Earthquake Sound i82SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 2-Ohm (Pair)

**Brand:** earthquake
**Price:** $500.56
**Availability:** ✅ In Stock

## Summary

> 🎵 Under-seat bass that commands attention—feel the quake, not the bulk!

## Quick Answers

- **What is this?** Earthquake Sound i82SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 2-Ohm (Pair) by earthquake
- **How much does it cost?** $500.56 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/41726855-earthquake-sound-i82sws-8-inch-shallow-woofer-system-under-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:** Fits seamlessly under your seat with a shallow 2-1/8" mounting depth for versatile installation.
- • **Tailored for BMW & Supra:** Direct OEM replacement for BMW and Toyota Supra MKV factory woofers—no modifications needed.
- • **Durability Meets Innovation:** Built with NOMEX/ROMEX spider assembly and protected by 3 US patents for long-lasting performance.
- • **Optimized for 2-Ohm Systems:** Engineered to match modern 2-ohm impedance factory amplifiers for maximum efficiency and sound clarity.
- • **Punchy Bass, Small Footprint:** Delivers deep, satisfying bass from a compact 8-inch woofer with patented inverted cone design.

## Overview

The Earthquake Sound i82SWS is a pair of 8-inch shallow mount subwoofers designed for under-the-seat installation, delivering powerful 150W RMS bass with a compact 2-1/8" mounting depth. Perfectly compatible as a direct replacement for BMW and Toyota Supra MKV factory woofers, these 2-ohm impedance speakers feature patented inverted cone technology and durable NOMEX/ROMEX spider assemblies, ensuring punchy, high-quality bass without sacrificing space.

## 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: Good woofers. - These are good woofer replacements for doors. Be sure to get low pass crossovers. They take a week to break in. First day not much bass. Second week these kick in. Lots of strong bass. Also, be sure they are sealed around surface mounting area.
Review: Happy with purchase. - The setup in my 2014 4Runner. Running a 5 channel NVX amplifier. Focal 6.5 in doors and tweeter in factory locations. 2 Dayton Audio 8” subwoofers in ported box. I wanted to add a front subwoofer for mid bass. Was able to make a box for under front drivers seat, with .2 CU FT. played with different crossover points and settled on high pass at 50HZ. Low pass at 120. Output was no problem. Had to turn down the amp gain to match the other speakers. Sounds great and gives an extra punch the brings the bass up front. Also acts as a bass shaker under my seat. I feel like it is built well. I like that it can go in a small sealed box. Base does roll off below 50HZ. My amp is rated at 150 watts bridged. It does not clip with my setup. Over all I’m impressed. Would buy again.

## 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 |
| Audio Driver Size | 8 Inches |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #33,650 in Electronics ( See Top 100 in Electronics ) #61 in Car Component Subwoofers |
| Compatible Devices | Universal |
| Control Method | Touch |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.0 4.0 out of 5 stars (505) |
| Date First Available | December 30, 2013 |
| Global Trade Identification Number | 00689759101222 |
| Impedance | 2 Ohms |
| Included Components | i82SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers(2)^Gaskets(2) |
| Is Waterproof | FALSE |
| Item Weight | 3.52 pounds |
| Item model number | i82SWS |
| Manufacturer | EARTHQUAKE |
| Material | Plastic/Metal, Polypropylene/Aluminum |
| Model Name | i82SWS |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 12"D x 9"W x 11"H |
| Recommended Uses For Product | For Car Audio |
| Set Name | Pair |
| Shape | irregular |
| Speaker Size | 8 Inches |
| Speaker Type | Subwoofer |
| Special Feature | Low Profile Mounting |
| Style | 8-inch (2-Ohm) - Pair |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 8 Inches |
| Surround Sound Channel Configuration | 2.0 |
| UPC | 689759101222 |
| Unit Count | 1.0 Count |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Communication 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

![Earthquake 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)

## 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

### ⭐⭐⭐⭐⭐ Good woofers.
*by E***Y on October 18, 2025*

These are good woofer replacements for doors. Be sure to get low pass crossovers. They take a week to break in. First day not much bass. Second week these kick in. Lots of strong bass. Also, be sure they are sealed around surface mounting area.

### ⭐⭐⭐⭐⭐ Happy with purchase.
*by T***2 on June 28, 2025*

The setup in my 2014 4Runner. Running a 5 channel NVX amplifier. Focal 6.5 in doors and tweeter in factory locations. 2 Dayton Audio 8” subwoofers in ported box. I wanted to add a front subwoofer for mid bass. Was able to make a box for under front drivers seat, with .2 CU FT. played with different crossover points and settled on high pass at 50HZ. Low pass at 120. Output was no problem. Had to turn down the amp gain to match the other speakers. Sounds great and gives an extra punch the brings the bass up front. Also acts as a bass shaker under my seat. I feel like it is built well. I like that it can go in a small sealed box. Base does roll off below 50HZ. My amp is rated at 150 watts bridged. It does not clip with my setup. Over all I’m impressed. Would buy again.

### ⭐ 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

- Earthquake Sound i82SWS 8-inch Shallow Woofer System Under-the-Seat Subwoofers with Gaskets, 2-Ohm (Pair)
- NuIth Speaker Wiring Harness Connector Adapter Replacement for BMW X1-X7, i3/i4/i8, iX3, Z4/Z8/Z3, 1-7 Series Aftermarket Tweeter Stereo Speaker Cable Plug

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-28*