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Earthquake Sound TREMOR-X124

1250W 12" TREMOR-X Series Single 4 ohm Subwoofer

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List price $199.00

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$79.95

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Earthquake Sound TREMOR-X124

1250W 12" TREMOR-X Series Single 4 ohm Subwoofer

$79.95

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12" Dual Hatchback Style Medium Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Dual Hatchback Style Sealed Enclosure w/ Premium Carpeted Finish

$71.95

Add
25 ft. of Streetwires 12 Gauge Speaker Cable

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

$44.95

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20 Square Feet of Sound Dampening Material

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

$59.99

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Bundled Savings with this Product

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25% Off a Sealed Enclosure with Your Subwoofer Purchase!

Save 25% on a Sealed Subwoofer Enclosure when you add a Belva MDFS12 to your Subwoofer purchase. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

8.00

38128

502

Earthquake Sound TREMOR-X124

$79.95

+

25% OFF

Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

$31.99

Special Price $23.99 ($31.99 if purchased separately)

Single 12" Sealed MDF Subwoofer Enclosure (Belva MDFS12)

• 3/4" Medium Density Fiberboard Construction
• Durable Black Carpeting
• Pre-Lined with Poly-Fil
• Gold Speaker Terminals

(Offer 1 of 1)

Combined Total Price

$103.94

You Save $8.00

Feel the Earth Move and Quake with Tremor-X Subwoofers

The TREMOR-X124 12" single 4 ohm subwoofer by Earthquake Sound is the kind of woofer no car audio enthusiast should be without. Its pressed pulp fiber cone and high-roll rubber surround provide sturdiness, rigidity, and increased performance, while the Turbine Cooled Transducer technology keeps the voice coil at lower temperatures for longer and louder bass reproduction. The woofer also features an anti-wobble cone construction and reinforced dust cap construction for improved linear movement, thus creating a nice steady bass at any volume level. Its spring-loaded terminals offer a quick and simple installation while the thick density magnets offer better efficiency. This Tremor-X series subwoofer has everything you need from a subwoofer and it's even marine compatible for installation on boats, not many other woofers can say that. In today's economy this woofer is the best bang for your buck.

Product Features

  • 12" Single 4 ohm Tremor-X Series Subwoofer
  • Power Handling:
    • Peak: 1250 watts
    • RMS: 400 watts<
  • Impedance: Single 4 ohm
  • Pressed pulp fiber cone
  • High roll surround
  • TCT (Turbine Cooled Transducer) technology
  • Anti-wobble cone construction
  • Military grade voice coil
  • High current heavy-duty stitched tinsel leads
  • Reinforced dust cap construction
  • Spring loaded terminals
  • Thick high density magnet
  • Marine compatible construction for installation on boats
  • Sensitivity: 84.8 dB
  • Xmax: 27.94 mm
  • Mounting depth: 5-1/2"
  • Cutout dimensions: 11"
  • Authorized Internet Dealer
  • 5-year Manufacturer's warranty

Thiele/Small Parameters

  • Free Air Resonance (Fo): 31.2 Hz
  • Electrical "Q" (Qes): 1.034
  • Mechanical "Q" (Qms): 2.127
  • Total Speaker "Q" (Qts): 0.696
  • Effective Piston Area (Sd): 81.392 sq. in.
  • REVC: 3.800 ohm
  • BL: 17.302 TM
  • VAS: 4.1 cubic feet

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Tremor-X (Earthquake)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
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.
1250 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.
400 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.
Single
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
Sensitivity
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".
84.8 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.
27.94 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.
Black
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.
Pressed Pulp Fiber
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.
High Roll Foam
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.
No
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.
No

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Bandpass
Ported / Vented
Sealed
Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.22 cubic feet
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.22 cubic feet
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
2.08 cubic feet
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
2.08 cubic feet
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.
5-1/2"
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.
11"
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.

No

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.
31.2 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.
116.09 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.
0.6359
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.
1.034
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
3.800 ohms
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.
2.127

Warranty and Return Policy

Parts Warranty Duration
5 years
Labor Warranty Duration
5 years
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
75%
4 Star
17%
3 Star
8%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.8
Features
4.3
Design
3.9
Usability
4.8
DJ

Farmersville, TX

Overall
Durability
Value
Features
Design
Usability
Tremor x 12

February 10, 2013

I have owned a lot of drivers in my time, the sub is a little over rated, but not a bad over all woofer. Can't seem to destroy the damn thing.

19 of 34 found this helpful

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Dean

San Diego, CA

Overall
Durability
Value
Features
Design
Usability
Deep bass and no distortion!

July 2, 2013

It's been years since I've had a subwoofer in my truck (previously owned fosgate p1's, kicker, polk audio, jl audio w1's). After a few days of researching - I've decided to try out the tremors.

I'm running this sub with an SSL 2000w amp and I couldn't be happier! Finished wiring everything hours ago and was testing the sub at high volume/levels (after tuning). I could not hear any distortion from the cone, which is key, since the sub is in my back seat.

No need to be skeptic on these subs - they will not disappoint! I would strongly recommend to anyone who doesn't want to spend a lot of money for quality or for anyone who's buying a sub for the first time; the tremors are the way to go!

17 of 32 found this helpful

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SCOTTY 2 HOTTY

Phenix City AL.

Overall
Durability
Value
Features
Design
Usability
love them

October 9, 2013

Love them so soooo much!

14 of 27 found this helpful

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OCHO

Upstate, NY

Overall
Durability
Value
Features
Design
Usability
WOW Super smooth and DEEP

May 31, 2015

I put Double the Soundstream RMS power to two of these 12's trying to test their limits. That didn't do it. They Just take whatever you throw at them and keep pounding! Better than my alpine type R 12's.

11 of 22 found this helpful

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GitSum LOW LoW BaSS

Sherman Oaks, CA

Overall
Durability
Value
Features
Design
Usability
WoW Really!?

August 17, 2011

I Recommend this to Everyone who is looking for some serious DB and SPL for under $200. I pulled this sub out of the box and I was skeptical and my friends laughed! Hooked it up and im under powering it mind you (ADVISE NOT TO DO) at 225 Watts RMS and it handles 625 RMS. All I can say is that the Engineer of this sub-woofer is a Genius. It is by FAR FAR FAR the best sounding subwoofer ive heard. At 225RMS this sub is hitting harder and stronger than subs Ive had over 500 watts on. So Happy with it im gonna get the right amp and get me a S.L.A.P.S. radiator. Awesome thanks Sonic for once again surprising the SH@$ out of me!

18 of 36 found this helpful

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Dakota

New Bern, NC

Verified Purchase
Overall
Durability
Value
Features
Design
Usability
Insane

July 19, 2015

Giving x4 of these 2,500 rms, 5,000Peak and they are just smashing. So durable, they take everything you throw at them and they just laugh. Quality is superb.
I had x3 Kickers that do not even compare, the Earthquakes are in a whole different universe. I have run them for hours without them getting warm. The precision amp is nice as well. I love these subwoofers. I like that there Marine Compatible, No worries if you accidentally spill something on them. Honestly cant think of a Con. I got a con, they slam so hard they made me have to reinforce my box because the wood they where in was literally flexing 3 inches up and down. Looked like a trampoline. That was with a center post for support, i had to add 6 more supports. Simply ridiculous for such a cheap subwoofer.

6 of 13 found this helpful

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Austin

Ponchatoula, LA

Overall
Durability
Value
Features
Design
Usability
Excellent!!!

April 26, 2012

Just got this sub an was very impressed. Have it hooked to a 500w amp in a sealed box, and the bass is very clean, and handles low frequencies extremely well. A+ in my book.

14 of 29 found this helpful

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Gabriel

Sweet Home Oregon

Overall
Durability
Value
Features
Design
Usability
Love them worth all the money.

June 26, 2014

I have owned p3's and seen power acoustic mofos. set up seen 1000 watt alpines but these are probably some of the best i have seen. i thought they were going to be smaller but when i opened the box i was amazed. the surround is a lot wider than i thought and the excursion is very nice. Even with 2 of these in my restricted space camaro they still pound. i have a monoblock soundstream running to them and i almost feel like 650 rms watts isnt enough for these subs.

16 of 34 found this helpful

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Super sport

seattle Washington

Overall
Durability
Value
Features
Design
Usability
Nice subwoofer

June 15, 2014

Great sounding, true rms rated power 1000 watts easy I'm impressed

17 of 36 found this helpful

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Rocky M

Belton, Mo

Overall
Durability
Value
Features
Design
Usability
Good buy

January 8, 2014

Very pleased with my purchase. I bought this
Sub to replace the Polk sub I have. The earthquake
Woofer hits a lot harder and doesn't distort
when I crank it up. So far so good!

17 of 37 found this helpful

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Gamebreed

Denmark SC

Overall
Durability
Value
Features
Design
Usability
Best sound I have ever heard!!!

January 1, 2012

I had two rockford p1s being pushed by a old punch 800a2. I blew these and decide to try one of the tremor x124's. When i opened the box and saw the sub I was a little disappointed, but when i installed it i was in love. This thing pounds like crazy! I have it in a vented box and it is making both p1's look like punks. I am ordering 2 more as soon as possible.

14 of 31 found this helpful

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Hunter

West Point, GA

Overall
Durability
Value
Features
Design
Usability
Great subs

December 19, 2012

I just got these subs recently and they're amazing. Even underpowered on my Kicker ZX400.1 these things boom and hit every note I ask of them, which was my complaint about my previous pair of subs I owned. If you're looking for subs that can handle spl and sq, these are great. Great for the price, worth every penny.

13 of 30 found this helpful

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Accessory Tools and Products

Accessories added

12" Dual Hatchback Style Medium Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Dual Hatchback Style Sealed Enclosure w/ Premium Carpeted Finish

Your Price $71.95

12" Medium Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Dual Sealed Enclosure w/ Premium Carpeted Finish

Your Price $71.95

12" Single Hatchback Style Medium Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Single Hatchback Style Sealed Enclosure w/ Premium Carpeted Finish

Your Price $43.95

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

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

Dynamat Sound Dampening Trunk Kit

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

Your Price $94.95

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

1mm All Purpose Solder

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

Your Price $8.99

12" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $4.99

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 TREMOR-X124 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Earthquake Sound TREMOR-X124 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Earthquake Sound TREMOR-X124 Subwoofers

4 Channel Amp

4 Earthquake Sound TREMOR-X124 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Browse 2 questions and 5 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
This is the second one I've purchased. They're in a .9 cu ft sealed box each under the seats of my 08' Silverado. Just one rattled the mirrors but two is amazing, along with sound quality.
Colin K on Jun 3, 2015
For specs and quality and price is right.
Jason F on May 8, 2015
The amount of xmax that has.
Endwy T on May 26, 2015
these subs have a lot of punch and excellent sound quality, and are priced low for there performance! very Happy!!!
scott g on May 6, 2015
WHat size is the voice coil on these?
A shopper on Dec 30, 2014
Best Answer: Hello shopper, the voice coils in this series of sub is 1 1/2, but they can handle some punishment. I have 4 of them being ran by 2 Audiopope Apcl 1500.1d and they sound great with the amps turned up only half ways.
Reply · Report · frank m on Dec 31, 2014
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

TREMOR-X124

UPC

1112468975970

Weight

12.95lbs

Internal SKU

tremorx124

Internal Product ID

38128

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 TREMOR-X124

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