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Earthquake Sound SWS-6.5X

200W 6.5" Shallow Woofer System Series Single 4 ohm Subwoofer

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List price $149.95

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General Features:

  • 6-1/2" Single 4 ohm Voice Coil Subwoofers
  • Power Handling:
    • Peak: 200 watts
    • RMS: 100 watts
  • Impedance: 4 ohms
  • Woofer cone material Polypropylene
  • Woofer Butyl Rubber
  • Frequency Response: 35 - 1000Hz
  • Sensitivity: 77.3dB
  • Revc : 3.600 Ω
  • Fo : 39.31 Hz
  • Sd : 12.500 msqM
  • BL : 4.350 TM
  • Qms : 4.192
  • Qes : 1.723
  • Qts : 1.221
  • SPLo : 77.3 dB
  • Vas : 9.94 Ltr
  • Xmax : 15 mm
  • 1" Aluminum voice coil
  • Top-mount depth: 1-3/4"
  • Authorized Internet Dealer
  • 1 year manufactuer Warranty
Priced Per Pair

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
SWS (Earthquake)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
200 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
100 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
35 - 1000 Hz
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
77.3 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
15 mm
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Butyl Rubber
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.

Recommended Enclosure Specifications

Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.


Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
39 Hz
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
9.94 liters
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 10.
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 10.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating

Robert D

South Jordan, Utah

Earthquake Sound SWS-6.5X

October 2, 2013

These sound great and fit in small places. I am getting more of them.

I had one speaker I had to replace and service was great.

17 of 25 found this helpful

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Liberal, KS

Exceeded expectations

October 12, 2013

Took a chance on these after reading both positive & negative reviews. Purchased on the hunch that the negative reviews were a result of poor installation, & the hunch was right!...Paired with a Power Acoustik Razor RZ4 1200D amp, these little things put out more than enough bass! Incredible for the tiny sub that I was holding in one hand. So just 2 things to remember: 1. Be sure that you have the power to drive them!!! 2. I installed these in the rear doors of a 2005 Silverado extended cab....clearance was very close after cutting a little metal. You need at least 1 1/2" clearance for deflection in front of these. The only Con: Had to tighten everything down! They punch so hard, the door panel would vibrate. After using foam tape around all the clips, & a couple of other things which should have been done by Chevy in the first place, I am definitely pleased with the results!

12 of 25 found this helpful

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Earthquake sws 6.5x

October 22, 2012

Bought 4 of these speakers expecting some good mid level bass, and was very disappointed in the amount of bass production. I would not suggest this product if your not running subs, you would be better off with quality 6x8 or 6x9's. If your running subs and are amping theses speakers then they are a cost effective choice. They need to be powered to really get the most out of them.

10 of 21 found this helpful

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liberal, KS

Great sound...Not so great quality

April 22, 2014

went through 2 pair in 6 months. These speakers sound incredible for a shallow 6.5 sub. I would say there is a quality control issue at the factory. Sonic Electronix gets ten stars for customer service! I quit shopping at other online audio stores. These guys are the best on every level!

8 of 19 found this helpful

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Accessory Tools and Products

Accessories added

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $44.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

Your Price $59.99

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $94.95

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $69.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $6.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $1.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $16.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $79.99

4 Ft of 1/4" Thick Black Heat Shrink Tubing

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $21.99

1 Earthquake Sound SWS-6.5X Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Earthquake Sound SWS-6.5X Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Earthquake Sound SWS-6.5X Subwoofers

4 Channel Amp

4 Earthquake Sound SWS-6.5X Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Browse 7 questions and 15 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
only place i could fine this size of sub.
wazir I on May 18, 2015
Desire to place in rear door enclosures
Michael B on Apr 22, 2015
Only product that would fit my application.
Jeffrey D on May 15, 2015
I have a Jeep Wrangler.
If the sound of these turns out to be good, they look ideal for my Jeep. They are shallow mount and have good depth in their lower frequencies. We shall see.
Rob F on Feb 27, 2015
The specs on these are lacking. What is the freq response and Fs?
Bradley H on May 5, 2015
Best Answer: Around 61hz for 4 of them in a shallow box depth 2•7/8
Reply (1) · Report · sherwin h on May 6, 2015
· Add Answer · I Have This Question Too (0)
Will these work in the rear 6 1/2 factory holes on 98 Tacoma ext cab? Will my aftermarket head power them enough? I listen primarily to jazz, old country classical and classic rock. NO THUMP-THUMP! I just want to fill out the lows. Can they be installed free air or should I seal off the area behind them?
George D on Nov 23, 2014
Best Answer: Your aftermarket stereo will power them but not to the level required plus you will need to have a low pass filter to keep the high frequencies out. I would recommend a small amp. The do sound good in a free air/door panel as long as you put the right wattage to them. And RMS wattage is what you should base ur amp on. I used a 4 channel amp to run the speakers. Front two channels for the highs, and the rear channels for the subs in the doors. With 50w rms going to them they really put out some good sound and fills the bottom end ok not as good as subs in box. Hope that helps.
Reply · Report · Richard C on Nov 23, 2014
· Add Answer · I Have This Question Too (0)
What volume enclosure should these be in and can they be free air mounted?
A shopper on Jun 17, 2015
Best Answer: They don't do well in enclosures. In a door panel is where I found they work best.
Reply · Report · Richard C on Jun 17, 2015
· Add Answer · I Have This Question Too (0)
is the price for 2 subs?
A shopper on Aug 28, 2014
Best Answer: Yes it is.
Reply · Report · Corey HStaff on Aug 29, 2014
· Add Answer · I Have This Question Too (0)
Will these work in the fairing of a harley street glide?
Will I need to add mids and highs to complete the system or just highs?
Bobby B on Oct 15, 2014
· Add Answer · I Have This Question Too (0)
Will this work in the fairing of a Harley Davidson street glide with teh fosgate PBR300X4amp?
Bobby B on Oct 12, 2014
· Add Answer · I Have This Question Too (0)

Product Summary


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Earthquake Sound SWS-6.5X

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