---
product_id: 7586953
title: "Sound FF6.5 6.5-Inch Front Firing Subwoofer black"
brand: "earthquake"
price: "2874 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Earthquake"
url: https://www.desertcart.ro/products/7586953-sound-ff6-5-6-5-inch-front-firing-subwoofer-black
store_origin: RO
region: Romania
---

# 150W Class AB amplifier 6.5-inch front-firing driver 12 dB/oct variable filter 40-180Hz Sound FF6.5 6.5-Inch Front Firing Subwoofer black

**Brand:** earthquake
**Price:** 2874 Lei
**Availability:** ✅ In Stock

## Summary

> 🎵 Small size, seismic sound – unleash bass that commands attention!

## Quick Answers

- **What is this?** Sound FF6.5 6.5-Inch Front Firing Subwoofer black by earthquake
- **How much does it cost?** 2874 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/7586953-sound-ff6-5-6-5-inch-front-firing-subwoofer-black)

## 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:** Big bass impact from a sleek 6.5-inch front-firing subwoofer designed for tight spaces.
- • **Smart Signal Sensing:** Automatic detection circuitry powers up only when needed, saving energy and extending component life.
- • **Efficient Amplification:** 150-watt Class AB amp delivers clean, distortion-free power that keeps your sound crisp and dynamic.
- • **Customizable Bass Control:** 12 dB/octave variable crossover lets you tailor low frequencies from 40 to 180 Hz for perfect room tuning.
- • **Sleek, Space-Saving Design:** Horn-loaded hybrid enclosure with internal amp cooling maximizes output without bulky footprint.

## Overview

The Earthquake Sound FF6.5 is a precision-engineered 6.5-inch front-firing subwoofer featuring a 150-watt Class AB amplifier, advanced automatic signal detection, and a variable 12 dB/octave crossover filter adjustable between 40 and 180 Hz. Its innovative quarter-wave transmission line/horn-loaded hybrid enclosure enhances bass output and accuracy, rivaling larger 10-inch subs while maintaining a compact footprint ideal for bedrooms and small home theaters. Designed for audiophiles seeking powerful, efficient low-frequency performance in limited spaces.

## Description

Earthquake's FF subwoofer system was designed to offer a budget-conscious and volume-optimized subwoofer solution. With a small footprint, Wide variety of applications, And incredible output, The 6.5" FF6.5 features a 150-watt Class AB amplifier, Auto Signal Sensing, Low level inputs, And 180-degree phase shifting as well as a 0-40 Hz crossover.

Review: Efficiency over size... - Where do I begin? Let me start with the technology that is offered in this product... This Earthquake FF6.5 is pristine example of proper audio engineering, fine tuning and care in a finished product. Let's start with the enclosure; What you have in the 6.5" model is unlike any offering from other manufacturers out there. The enclosure is an extremely solid(resonance-free) quarter-wave transmission line/horn-loaded hybrid made from a combination of 3/4" and 1/2" MDF. Implementing this technology into a home theater offering is an incredibly wise thing to do. Why? The output and accuracy of low-frequency notes are greatly increased, making this subwoofer not only loud but INCREDIBLY efficient and accurate. Quarter-wave transmission line enclosures, if made correctly, can take a smaller driver(subwoofer) and make it equal in SPL to larger subwoofers with traditional ported or sealed box designs. What this means is if you wanted the true output level of a 10" subwoofer but would like to save some space without compromising anything, this is your sweet spot... This enclosure is built in such a way that the air pressure produced from the subwoofer acts as an efficient cooling setup for the amplifier. This allows the amplifier to be internally concealed as opposed to sticking out the rear end of the enclosure= more saved space! Second... The subwoofer itself. What you have here is a long-throw 6.5" subwoofer with patented Turbine-Cooled-Transducer technology. This technology forces air in through the holes on the bumped backplate, over the voice-coil and out again with each cycle. This allows the subwoofer to play at high levels for a long time while remaining cool, thus keeping the RMS wattage stable... The linear mechanical X-Max (distance cone can travel front to back) is a FULL 2 inches! This is incredible excursion from such a small driver! When I say this subwoofer matches the output of a traditional 10" subwoofer I'm not exaggerating... The voice-coil and motor assembly is modeled after Earthquakes MiniMe series with some concepts taken from their Magma subs as well. Third... Wrap this package up with an extremely efficient Earthquake class A/B digital amplifier, awesome X-over controls and 180 degree phase switching ability and you have something no other company could offer at this price. This amplifier runs at 100 watts RMS with 150 watts peak power output keeping strong power output consistent during the entire time you listen to music or watch movies... If anyone has had the pleasure of talking with professor Joseph Sahyoun of Earthquake Sound you would know the level of genius this man has in audio engineering. The level of quality craftsmanship and technology he puts into his products are something I greatly admire being an audiophile. Most people who have bought this truly don't know what they have. A word of advice; when you get this subwoofer, allow 1 week of proper break-in time to exercise the spider and motor assembly before turning it very high. When subwoofers are sent to you new from the factory, the spider is very stiff with very little play. As you break them in properly they loosen up allowing the sound reproduction to increase in SPL and accuracy/sensitivity. Cranking up a new subwoofer fresh out of the gates stresses the stiff spider and can break the seal between spider and speaker cone= blown sub. Keep the max volume at 65% or so for 4-7 days. A note on the proper application of this subwoofer. This sub is designed to be implemented a space no larger than 12' x 12' x 8' or similar sized rooms. I noticed a bad review from a gentleman who placed this in a kitchen. This is a misapplication of this product... Most kitchens are "open room" designs. In a vast open area like a kitchen you are going to lose your Sound Pressure Level (SPL) which leads to a flat bass response. This is a product designed for a bedroom home theater where the sound pressure is contained(door and windows closed). Another reviewer mentioned a "humming" noise from his sub, this is due to a bad rca line-out source. Traditional cheap rca line-out cables are unshielded. Being unshielded they can pick up EMF signals floating around from other cables, power sources, antenas etc... Using shielded high quality cables will help drastically. I use what is called a "power conditioner" on all my audio and video equipment. This reduces or eliminates interference, voltage fluctuations, over-voltage and damage to components from brown/black outs. If you appreciate a well-balanced audio system and are in the market for a subwoofer 10" or under, seriously consider this 6.5". Many people are afraid to buy a 6.5" for fear of it under-performing. Do NOT fret about this subs size, the technology is there to rival 10" subs...
Review: FF6.5 is ideal for near field listening - I had bought 2 of these subwoofers to create a 2.2 speaker setup for my desk in my small bedroom. Upon first listen without break in I was underwhelmed its was weak and shallow. After 100+ hours of break in, these subwoofers are impressive. The bass is impactful, deep, and well controlled at various listening levels. Keep in mind that these are 6.5 subwoofers so its suitable for smaller listening environments or a space where a lease may be at liberty due to noise.

## Features

- 6.5-inch front-firing subwoofer
- 150-watt Class AB high-efficiency amplifier
- Automatic signal detection circuitry
- LED status indicators
- 12 dB / Octave variable filter from 40 Hz to 180 Hz

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00829T0AW |
| Additional Features | Front firing |
| Antenna Location | For Surround Sound Systems |
| Audio Driver Size | 6.5 Inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | RCA |
| Best Sellers Rank | #273,553 in Electronics ( See Top 100 in Electronics ) #421 in Home Audio Subwoofers |
| Brand | EARTHQUAKE |
| Built-In Media | Earthquake Sound FF6.5 6.5-Inch Front Firing Subwoofer, User Manual |
| Color | black |
| Compatible Devices | Universal |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | RCA |
| Connectivity Technology | RCA |
| Control Method | App |
| Controller Type | Button |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 3.6 out of 5 stars 114 Reviews |
| Enclosure Material | Acrylic |
| Frequency Response | 180 Hz |
| Global Trade Identification Number | 00068975900466 |
| Input Voltage | 12 Volts (DC) |
| Is Electric | Yes |
| Is Waterproof | FALSE |
| Item Dimensions D x W x H | 14.2"D x 7.7"W x 9.9"H |
| Item Height | 9.9 inches |
| Item Weight | 16.5 Pounds |
| MP3 player | No |
| Manufacturer | EARTHQUAKE |
| Model Name | FF6.5 |
| Model Number | FF6.5 |
| Mounting Type | Floor Standing |
| Number of Audio Channels | 5.1 or 7.1 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Series Number | 65 |
| Speaker Maximum Output Power | 150 Watts |
| Speaker Size | 6.5 Inches |
| Speaker Type | Subwoofer |
| Specific Uses For Product | Home Theaters, Car Audio Systems, Music Studios |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 6.5 Inches |
| UPC | 068975900466 |
| Unit Count | 1.0 Count |
| Warranty Type | Limited Warranty |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 16.51 Centimeters |

## Product Details

- **Brand:** EARTHQUAKE
- **Speaker Maximum Output Power:** 150 Watts
- **Frequency Response:** 180 Hz
- **Connectivity Technology:** RCA
- **Audio Output Mode:** RCA

## Images

![Sound FF6.5 6.5-Inch Front Firing Subwoofer black - Image 1](https://m.media-amazon.com/images/I/61RquvW6FvL.jpg)

## Available Options

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

## Questions & Answers

**Q: hey there i have a small room well this fill my room with a lot of bass??**
A: Yes I have this in my living room 20x20 and this subwoofer sounds superb a little boomy but we'll worth the money

**Q: Is the amp only rated to 150rms or is that the peak?**
A: The amp is rated at 150 watts RMS power.  This is good.

**Q: No lfe feature, right ? meaning that needs yes or yes both cables, r&l. is not working with the right input hook it to my avr lfe pre out ....**
A: You need to have a  subwoofer cable that has Y connection (both male) at one end and single male connection at the other end.  Insert the single male connection on you preamp output on your AVR and the Y connection (red and white) on FF10. Mediabridge sells subwoofer cables that are very good.

**Q: I was wondering if it is deep bass?**
A: This subwoofer produces bass so deep you need to set its frequency dial to 80hz and above just to hear it. Most other brands of similar size suffer from the dreaded thud sound, this does not dissapoint.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Efficiency over size...
*by R***E on December 30, 2016*

Where do I begin? Let me start with the technology that is offered in this product... This Earthquake FF6.5 is pristine example of proper audio engineering, fine tuning and care in a finished product. Let's start with the enclosure; What you have in the 6.5" model is unlike any offering from other manufacturers out there. The enclosure is an extremely solid(resonance-free) quarter-wave transmission line/horn-loaded hybrid made from a combination of 3/4" and 1/2" MDF. Implementing this technology into a home theater offering is an incredibly wise thing to do. Why? The output and accuracy of low-frequency notes are greatly increased, making this subwoofer not only loud but INCREDIBLY efficient and accurate. Quarter-wave transmission line enclosures, if made correctly, can take a smaller driver(subwoofer) and make it equal in SPL to larger subwoofers with traditional ported or sealed box designs. What this means is if you wanted the true output level of a 10" subwoofer but would like to save some space without compromising anything, this is your sweet spot... This enclosure is built in such a way that the air pressure produced from the subwoofer acts as an efficient cooling setup for the amplifier. This allows the amplifier to be internally concealed as opposed to sticking out the rear end of the enclosure= more saved space! Second... The subwoofer itself. What you have here is a long-throw 6.5" subwoofer with patented Turbine-Cooled-Transducer technology. This technology forces air in through the holes on the bumped backplate, over the voice-coil and out again with each cycle. This allows the subwoofer to play at high levels for a long time while remaining cool, thus keeping the RMS wattage stable... The linear mechanical X-Max (distance cone can travel front to back) is a FULL 2 inches! This is incredible excursion from such a small driver! When I say this subwoofer matches the output of a traditional 10" subwoofer I'm not exaggerating... The voice-coil and motor assembly is modeled after Earthquakes MiniMe series with some concepts taken from their Magma subs as well. Third... Wrap this package up with an extremely efficient Earthquake class A/B digital amplifier, awesome X-over controls and 180 degree phase switching ability and you have something no other company could offer at this price. This amplifier runs at 100 watts RMS with 150 watts peak power output keeping strong power output consistent during the entire time you listen to music or watch movies... If anyone has had the pleasure of talking with professor Joseph Sahyoun of Earthquake Sound you would know the level of genius this man has in audio engineering. The level of quality craftsmanship and technology he puts into his products are something I greatly admire being an audiophile. Most people who have bought this truly don't know what they have. A word of advice; when you get this subwoofer, allow 1 week of proper break-in time to exercise the spider and motor assembly before turning it very high. When subwoofers are sent to you new from the factory, the spider is very stiff with very little play. As you break them in properly they loosen up allowing the sound reproduction to increase in SPL and accuracy/sensitivity. Cranking up a new subwoofer fresh out of the gates stresses the stiff spider and can break the seal between spider and speaker cone= blown sub. Keep the max volume at 65% or so for 4-7 days. A note on the proper application of this subwoofer. This sub is designed to be implemented a space no larger than 12' x 12' x 8' or similar sized rooms. I noticed a bad review from a gentleman who placed this in a kitchen. This is a misapplication of this product... Most kitchens are "open room" designs. In a vast open area like a kitchen you are going to lose your Sound Pressure Level (SPL) which leads to a flat bass response. This is a product designed for a bedroom home theater where the sound pressure is contained(door and windows closed). Another reviewer mentioned a "humming" noise from his sub, this is due to a bad rca line-out source. Traditional cheap rca line-out cables are unshielded. Being unshielded they can pick up EMF signals floating around from other cables, power sources, antenas etc... Using shielded high quality cables will help drastically. I use what is called a "power conditioner" on all my audio and video equipment. This reduces or eliminates interference, voltage fluctuations, over-voltage and damage to components from brown/black outs. If you appreciate a well-balanced audio system and are in the market for a subwoofer 10" or under, seriously consider this 6.5". Many people are afraid to buy a 6.5" for fear of it under-performing. Do NOT fret about this subs size, the technology is there to rival 10" subs...

### ⭐⭐⭐⭐⭐ FF6.5 is ideal for near field listening
*by N***N on May 1, 2024*

I had bought 2 of these subwoofers to create a 2.2 speaker setup for my desk in my small bedroom. Upon first listen without break in I was underwhelmed its was weak and shallow. After 100+ hours of break in, these subwoofers are impressive. The bass is impactful, deep, and well controlled at various listening levels. Keep in mind that these are 6.5 subwoofers so its suitable for smaller listening environments or a space where a lease may be at liberty due to noise.

### ⭐⭐ Poor build quality
*by I***L on October 1, 2016*

Poor build quality. Granted, I did not expect a lot from this sub considering the price, (I only wanted something simple with a small footprint and somewhat acceptable performance), but when I attached the Line-In on the sub to the Line-Out on my primary speakers, it created a constant hum. (I used good quality cables that I have used with other component connections with no issues.) The hum was actually on the primary speakers as well as the sub. So whatever cheap circuitry is in the sub was affecting the primary speakers with some type of feedback as well. This was not happening with the 12yr old sub I currently have attached using the same Line-In and Line-Out connections. The primary speakers are very good quality, so this was the sub causing it, no doubt. When I played music, it performed as a low-price sub would. Ok sound at low volume and some distortion at higher volumes. As others have mentioned, the shipping box was unacceptably thin and cheap and had some damage to it. It did not appear to damage the unit itself in my case, but I could see in general the box not being sufficient for shipping and causing damage. You may not experience the same issue if you are attaching it directly to a AV receiver that may be able to handle the feedback, but in my connection scenario, there is no way I can put up with the constant hum, even with nothing being played. I packed it up and returned it the same day.

## Frequently Bought Together

- Earthquake Sound FF6.5 6.5-Inch Front Firing Subwoofer black
- BlueRigger RCA Audio Subwoofer Cable (15FT, Dual Shielded, Gold Plated RCA Connectors) – for Subwoofer, Amplifier, Home Theater
- FosPower Subwoofer Cable (10 FT) RCA to RCA Audio Stereo Cable, Male to Male - Dual Shielded Cord | 24K Gold Plated Connector | Corrosion Resistant | Clean Sounding Signal

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-13*