---
product_id: 581425625
title: "Earthquake Sound SLAPS-M12v2 12-Inch Mass Tuned Passive Bass Radiator for Home and Mobile Audio Subwoofer Enclosures"
brand: "earthquake"
price: "274468₫"
currency: VND
in_stock: false
reviews_count: 8
url: https://www.desertcart.vn/products/581425625-earthquake-sound-slaps-m12v2-12-inch-mass-tuned-passive-bass
store_origin: VN
region: Vietnam
---

# <3 inch slim depth +6dB bass boost User-tunable mass Earthquake Sound SLAPS-M12v2 12-Inch Mass Tuned Passive Bass Radiator for Home and Mobile Audio Subwoofer Enclosures

**Brand:** earthquake
**Price:** 274468₫
**Availability:** ❌ Out of Stock

## Summary

> 🎵 Feel the SLAPS — bass that moves you and your space!

## Quick Answers

- **What is this?** Earthquake Sound SLAPS-M12v2 12-Inch Mass Tuned Passive Bass Radiator for Home and Mobile Audio Subwoofer Enclosures by earthquake
- **How much does it cost?** 274468₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/581425625-earthquake-sound-slaps-m12v2-12-inch-mass-tuned-passive-bass)

## 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

- • **Versatile Integration:** Seamlessly enhances both home and mobile audio systems for a next-level bass experience.
- • **Unleash Deep Bass Power:** Boost your subwoofer output by up to +6dB without extra amp power or enclosure size.
- • **Symmetrical Suspension Tech:** Patented dual-structure design ensures dynamic, distortion-free bass at ultra-low frequencies.
- • **Compact Design, Massive Impact:** Slim mounting depth under 3 inches fits virtually any subwoofer setup.
- • **Precision Tuned for Your Space:** Adjust the preinstalled 270g mass to perfectly match your enclosure and music style.

## Overview

The Earthquake Sound SLAPS-M12v2 is a 12-inch passive bass radiator engineered to amplify subwoofer efficiency and deliver ultra-low frequency bass with up to +6dB gain. Its patented symmetrical suspension design allows for user-tunable mass adjustments, enabling optimal performance in compact enclosures without additional amplifier power. With a slim profile under 3 inches, it integrates easily into home or mobile audio setups, producing deep, dynamic bass free from port noise and distortion.

## Description

The Earthquake Sound SLAPS-M12v2 is a tunable passive bass radiator that significantly increases subwoofer efficiency and ability for ultra-low frequency reproduction without additional amplifier power or enclosure volume. Designed to perfectly complement all good quality long throw woofers on the market, SLAPS add up to +6dB of bass compared to regular sealed and ported enclosures. The benefit of SLAPS being user-tunable is that they can be integrated into virtually any subwoofer/enclosure combination. SLAPS (Symmetrically Loaded Audio Passive System) overcomes the limitations known from the conventional sealed and ported enclosures that tend to limit excursion. As the name indicates, SLAPS is built symmetrically, distinguishing it from traditional or other inferior passive devices on the market today. SLAPS technology integrates a dual structure of identical opposites in its suspension design, resulting in identical properties in both the negative and positive pressure domain. The high efficiency and performance are a result of the pneumatic coupling between SLAPS and an active driver. The unique and patented design of SLAPS allows the active driver compression-free excursion, resulting in a deep, dynamic, and powerful bass response.

Review: SlapsV2 - This version feels more beefier than the V1 for some reason-so quality went up a notch. The cutout is slightly different than the v1 (smaller) so I had to make plates so they fit Over the original v1 hole. The specs (IN Detail) can be found only on the Earthquake EU website-and not the American one for some reason. No big deal. I have them in a 2.4cf box which puts it at 24hz (no mass). They are in the box pictured that housed my V1s. 4 total on 2 15s and WOW. They are loosening bolts all over the car. You may loose a db versus ported but the quality makes up the difference. Definitely worth it. I love the fact that I didn't need to make a box that took up the entire front and back my trunk for these lows. No EQ in the car but do have it on a crossover. Do it right and you'll love it. Make sure your sub has a Qts of .4 or below otherwise you may break something.
Review: I found the limits! - I ran this for a couple of years in a diy home theater sub and not knowing what I was doing had way too much weight on it trying to get it to dig low. It made my sub bottom out and I had to turn it way down. About a year ago I decided to try it in the trunk of my car with a different subwoofer and played around with the weight. I ended up removing the pre installed weight and took it down to about 200 grams total and in my 1.2³ft box, that was exactly what I was looking for. With my single skar svr12 on 1.5k this thing dug down to ~ 25hz before dropping off noticably. I probably still had too much weight as it started ripping the inner surrounds and ripping apart the passive radiator. I don't know if it impacted something in the trunk or the weight over time cracked the cone. Anyways it ended up destroying itself but I'm so impressed with the sound that I ordered another. I got 3-4 years out of that one so it didn't owe me anything. I'll attach a video of it beating and the aftermath, but if you're more sensible than me and willing to actually take the time to tune it instead of just throw weight at it and go you'll get even longer use out of it without with of destroying things. I never thought I could get a single cheap 12 to seriously flex my windows at 26hz but this little beast made it happen. Even though I killed it I obviously still recommend it, it's expensive for a pr but definitely worth it! Now to get this new one broken in :D

## Features

- Increases subwoofer output and efficiency without additional amplifier power or enclosure volume
- Patented design that allows for new subwoofer design possibilities where even small enclosures can be tuned to low frequencies
- User-tunable for optimum performance for a wide range of enclosure sizes and musical preferences with preinstalled 270g mass included
- Can be integrated into virtually any subwoofer/enclosure combination with a slim mounting depth of less than 3 inches
- Adds up to +6dB of bass compared to conventional sealed and ported enclosures; Enables deep bass from a compact volume without any annoying port noise

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B079R5Y73X |
| Additional Features | Increases sound pressure level (SPL) |
| Antenna Location | Subwoofer enclosures |
| Audio Driver Size | 12 Inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Best Sellers Rank | #70,927 in Musical Instruments ( See Top 100 in Musical Instruments ) #363 in Monitor, Speaker & Subwoofer Parts #22,020 in Music Recording Equipment |
| Brand | EARTHQUAKE |
| Built-In Media | Product insert, SLAPS-M12v2 passive radiator with mass installed, Warranty Card |
| Color | black |
| Compatible Devices | Desktop, Television |
| Connectivity Protocol | wired |
| Connectivity Technology | wired |
| Control Method | Touch |
| Controller Type | Corded electric |
| Customer Package Type | FFP |
| Customer Reviews | 3.8 3.8 out of 5 stars (26) |
| Enclosure Material | Metal, Plastic, Wood |
| Is Waterproof | False |
| Item Dimensions D x W x H | 2.25"D x 12.37"W x 12.37"H |
| Item Weight | 2.12 Pounds |
| MP3 player | No |
| Manufacturer | Earthquake Sound |
| Model Name | SLAPS-M12v2 |
| Model Number | SLAPS-M12v2 |
| Mounting Type | Flush Mount |
| Number of Audio Channels | 2.1 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Speaker Maximum Output Power | 10 Watts |
| Speaker Size | 12 Inches |
| Speaker Type | Passive Bass Radiator |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 12 Inches |
| UPC | 689759101642 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 year limited |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 12 Inches |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** EARTHQUAKE
- **Connectivity Technology:** wired
- **Mounting Type:** Flush Mount
- **Speaker Maximum Output Power:** 10 Watts

## Images

![Earthquake Sound SLAPS-M12v2 12-Inch Mass Tuned Passive Bass Radiator for Home and Mobile Audio Subwoofer Enclosures - Image 1](https://m.media-amazon.com/images/I/71Y0V2RZmrL.jpg)
![Earthquake Sound SLAPS-M12v2 12-Inch Mass Tuned Passive Bass Radiator for Home and Mobile Audio Subwoofer Enclosures - Image 2](https://m.media-amazon.com/images/I/71HXNRN3ExL.jpg)
![Earthquake Sound SLAPS-M12v2 12-Inch Mass Tuned Passive Bass Radiator for Home and Mobile Audio Subwoofer Enclosures - Image 3](https://m.media-amazon.com/images/I/61MalsbfC1L.jpg)
![Earthquake Sound SLAPS-M12v2 12-Inch Mass Tuned Passive Bass Radiator for Home and Mobile Audio Subwoofer Enclosures - Image 4](https://m.media-amazon.com/images/I/61rK0N8uzaL.jpg)
![Earthquake Sound SLAPS-M12v2 12-Inch Mass Tuned Passive Bass Radiator for Home and Mobile Audio Subwoofer Enclosures - Image 5](https://m.media-amazon.com/images/I/71YQm8xq9WL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ SlapsV2
*by B***N on April 11, 2024*

This version feels more beefier than the V1 for some reason-so quality went up a notch. The cutout is slightly different than the v1 (smaller) so I had to make plates so they fit Over the original v1 hole. The specs (IN Detail) can be found only on the Earthquake EU website-and not the American one for some reason. No big deal. I have them in a 2.4cf box which puts it at 24hz (no mass). They are in the box pictured that housed my V1s. 4 total on 2 15s and WOW. They are loosening bolts all over the car. You may loose a db versus ported but the quality makes up the difference. Definitely worth it. I love the fact that I didn't need to make a box that took up the entire front and back my trunk for these lows. No EQ in the car but do have it on a crossover. Do it right and you'll love it. Make sure your sub has a Qts of .4 or below otherwise you may break something.

### ⭐⭐⭐⭐⭐ I found the limits!
*by R***. on May 25, 2025*

I ran this for a couple of years in a diy home theater sub and not knowing what I was doing had way too much weight on it trying to get it to dig low. It made my sub bottom out and I had to turn it way down. About a year ago I decided to try it in the trunk of my car with a different subwoofer and played around with the weight. I ended up removing the pre installed weight and took it down to about 200 grams total and in my 1.2³ft box, that was exactly what I was looking for. With my single skar svr12 on 1.5k this thing dug down to ~ 25hz before dropping off noticably. I probably still had too much weight as it started ripping the inner surrounds and ripping apart the passive radiator. I don't know if it impacted something in the trunk or the weight over time cracked the cone. Anyways it ended up destroying itself but I'm so impressed with the sound that I ordered another. I got 3-4 years out of that one so it didn't owe me anything. I'll attach a video of it beating and the aftermath, but if you're more sensible than me and willing to actually take the time to tune it instead of just throw weight at it and go you'll get even longer use out of it without with of destroying things. I never thought I could get a single cheap 12 to seriously flex my windows at 26hz but this little beast made it happen. Even though I killed it I obviously still recommend it, it's expensive for a pr but definitely worth it! Now to get this new one broken in :D

### ⭐ 7 months later... disaster!
*by B***R on January 24, 2025*

This was my first time adding a passive radiator to a sealed speaker. It's amazing how much additional volume this adds to such a small box. The sub digs deeper without unloading like it would with a port. It sure does shake the box around when it hits the resonance with that weight... the radiator is much heavier than the woofer coil. It's a good idea to install two radiators on opposite sides of a box, i might try that next. I would buy this again. I added 1 to a single Skar VXF 12 in 15 cubic inches. Update - it only lasted 7 months... i am sad and disappointed. The plastic around the bolt cracked sending the weight flying into the subwoofer magnet. I am lucky it did not short out the terminals on my subwoofer. I knew there was a problem because i started smelling MDF dust from inside the box. Just to clarify, i did not add any extra weight to the unit. It's just the minimum weight it came installed with. Also, I'm not running my car at competition SPL, it's only 1500 watts cruising around town! I considered adding a large washer to the front to sandwich/clamp the plastic, but the plastic has a long crack. The material is too brittle and it will surely fail again. If you decide to buy this, i would remove the foam dampener and E6000 glue the weight into the plastic ring before installing. This would spread the pressure from the bolt hole to the larger reinforcing ring and perhaps avoid this failure. In my case the integrity of the plastic has been compromised so no repair is possible.

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-05-21*