• Earthquake Sound DBXi Series Car Subwoofers
  • Subwoofer Size Buying Guide
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Earthquake Sound DBXI-15

15" Single 4 ohm DBXi Series Car Subwoofer

  • 4.7

(3 reviews)

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Price Information

$399.00

–$169.05

$229.95

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Customer Testimonial

Sonic was very patient with all of my questions about installing and purchasing products. I took more time then most people would. Not once did Mr Brendan H. give me any negative feedback. I would highly recommend both Mr H and Sonic Electronix.

- Joeseph R. from Brooklyn, NY

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Go off the Richter Scale with DBXi Subwoofers

The DBXI-15 Single 4 ohm 15" subwoofer is the perfect example of what it means to carry the Earthquake Sound name. Earthquake Sound subwoofers need to not only be loud but also sound great and perform without any problems. With an RMS of 750 watts this woofer will produce enough bass to really satisfy those low-frequency reproduction needs. The woofer features a pressed pulp fiber woofer cone and high-roll rubber surround for added stiffness, rigidity, and higher excursion capabilities. Its turbo propped cooling reduces thermal heat and thus increases output and lowering distortion during all periods of play. The woofer also features a 2" voice coil and double stacked magnet structure able to produce an impressive 3.5" of linear excursion, giving you deep impact bass. The DBXi woofer is your everyday driver that will perform day in and day out without compromising quality.

Product Features:

  • 15" Single 4 ohm DBXi Series Subwoofer
  • Power Handling:
    • Peak: 2000 watts
    • RMS: 750 watts
  • Impedance: Single 4 ohm
  • Pressed pulp fiber woofer cone material
  • High-roll rubber woofer surround
  • New and improved design
  • Stitched tensile leads
  • Deep impact bass
  • Turbo propped cooling
  • Die-cast aluminum basket
  • 2" Aluminum bobbin voice coil
  • 150 oz. Double stacked magnet structure
  • Sensitivity: 88 dB
  • Xmax: 88.9 mm
  • Mounting Depth: 6-3/8"
  • Cutout dimensions: 13-3/4"
  • Authorized Internet Dealer
  • 5-year Manufacturer's warranty
Subwoofer Specifications
Subwoofer Series DBXI
Subwoofer Size 15"
Peak Power Handling 2000 watts
RMS Power Handling 750 watts
Voice Coil(s) Single
Impedance (Per Voice Coil) 4 ohms
Voice Coil Diameter 2"
Sensitivity 88 dB
Xmax (millimeters) 88.9 mm
Subwoofer Design Round / Circle
Main Cone Color Black
Woofer Composition Pressed Pulp Fiber
Woofer Surround High-Roll Rubber
Subwoofer Grille No
Re-Cone Kit Available No
Recommended Enclosure Specifications
Recommended Enclosure Type Ported / Vented
Sealed
Minimum Sealed Box Volume 2.0 cubic feet
Maximum Sealed Box Volume 2.50 cubic feet
Minimum Ported Box Volume 2.20 cubic feet
Maximum Ported Box Volume 4.20 cubic feet
Top-Mount Depth 6-3/8"
Cutout Diameter 13-3/4"
Electromechanical Parameters
Free-Air Resonance (Fs) 21 Hz
Equivalent Compliance (Vas) 91.1 liters
Total Speaker Q Value (Qts) 0.45
Electrical Q Value (Qes) 1.13
Electrical Resistance of Voice Coil (Re) 4.0 ohms
Mechanical Q Value (Qms) 5.98
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 5 years
Labor Warranty Duration 5 years
Warranty Provider Manufacturer
Customer Review Summary for Earthquake Sound DBXI-15
Average Customer Rating is 4.7 out of 5 stars:
  • 4.7
based on 3 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
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67%
4 star:
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33%
3 star:
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0%
2 star:
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0%
1 star:
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what's this?
Average Attributes Rating:
Durability
  • 5.0
5.0
Value
  • 5.0
5.0
Features
  • 4.7
4.7
Design
  • 5.0
5.0
Usability
  • 5.0
5.0
what's this?
Most Helpful Customer Reviews:
December 8, 2011 Earthquake Dbxi
Review by
JJ from fla
Overall
  • 4.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 4.0
Design
  • 5.0
Usability
  • 5.0
I was looking at this sub a couple years back when they where retailing for 400+$. I just got it for almost half price. I just did the install today and bought all my goodies through Sonic. Everything arrived on point. Sub quakes if you build a decent box with the right specs this thing will keep up with the competition for a third of the price. -durability to be tested ;-)
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September 9, 2011 If u want bass then buy this
Review by
Bass hunter from Arkansas jonesboro
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I have two in a fordf150 and all I can say is dayumn what a buy I have them both running off a kicker amp. If u want to piss people off then this is a must buy:)
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August 2, 2011 !!EXTREMELY LOUD NOT 4 PUSHOVERS!!
Review by
D.N.R from N.D
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I have 2 each running off 2 Hifonics 2400.1 in a 95 talon. All i gotta say is !!Sick!! Got the cash? Buy! You will definitly piss off your area bang'n these period! Thier that loud! I went through two windshields enough said buy if you got the funds.
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Empty Enclosures
Every subwoofer needs an enclosure to mount in and these high quality boxes are perfect for your new woofer! After a quick installation, you'll be ready for some real bass in your car!
  Product Price Add?
Sealed Subwoofer Enclosure Sealed Subwoofer Enclosure
Single 15" sealed enclosure carpeted gray and made with solid 3/4" MDF.
$59.95
Ported Subwoofer Enclosure Ported Subwoofer Enclosure
Single 15" ported/vented enclosure carpeted black and made with solid 3/4" MDF.
$79.95
Speaker Wire
Choose from our recommended speaker wire to hook up your amplifier to your new subwoofer. The higher quality of speaker wire that it used for this connection, the better your subwoofer will sound.
  Product Price Add?
15 ft. of 12 AWG StreetWires Speaker Wire 15 ft. of 12 AWG StreetWires Speaker Wire
This SuperCable from StreetWires is a noise free link between your amplifier and your subwoofer.
$24.99
20 ft. of 12 AWG Kicker Speaker Wire 20 ft. of 12 AWG Kicker Speaker Wire
Kicker uses twisted pair technology and hyper-flex cable to provide you with the cleanest sound and a simple installation.
$34.95
Sound Dampening Material
Get the most sound out of your new subwoofer with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
  Product Price Add?
Dynamat Rubber Roller Dynamat Rubber Roller
Install your Dynamat with ease! This heavy duty rubber roller is designed specifically to install your Dynamat!
$18.99
Dynamat Extreme Bulk Pack Dynamat Extreme Bulk Pack
36 ft. Dynamat Xtreme Bulk Pack enhances the sound for your entire car!
$159.99
Bass Reconstruction Processors
These sound processors are perfect for enhancing the lower frequencies of a car audio system. After some installation and tuning, your new system will sound better than ever!
  Product Price Add?
The Epicenter by AudioControl (Gray) The Epicenter by AudioControl (Gray)
The original bass booster expander with included remote will enhance the bass of your new system.
$159.99
Enclosure Accessories
These accessories are designed to help you build the custom enclosure that you have always wanted, or add to the box that you already bought. Either way, these products can assist you in achieving better sound, better looks, and more bass!
  Product Price Add?
20 oz. Bag of Poly-Fil 20 oz. Bag of Poly-Fil
Polyester fiber fiberfill adds better bass to your system.
$5.99
16 oz. Can of Adhesive Spray 16 oz. Can of Adhesive Spray
Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.
$6.99
Binding Post Terminal Cup Binding Post Terminal Cup
Use this to easily install a binding post terminal to your subwoofer enclosure.
$4.99
Banana Clip Terminals Banana Clip Terminals
These high grade banana clips allow you to plug into your banana clip ready terminal for a secure connection.
$4.99
Installation, Tools & Accessories
Don't forget to get the tools and accessories that will help you install your new subwoofer in your vehicle. Whether you opt for the professional installation card or the do-it-yourself method, you will need the following to help you out!
  Product Price Add?
Car Stereo and Speaker / Subwoofer Installation Tool Kit Car Stereo and Speaker / Subwoofer Installation Tool Kit
Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.
$14.99
System Optimization and Tuning
Use these items to assist in testing and tuning your new car audio system to perfection!
  Product Price Add?
Scosche SPL Meter Scosche SPL Meter
Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.
$24.99
AutoSound 2000 CD-101 AutoSound 2000 CD-101
Low frequency test CD
$12.99
AutoSound 2000 CD-102 AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103 AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99
Main Product
  Product Price Add?
Earthquake Sound DBXI-15 Earthquake Sound DBXI-15 $229.95

For more information on wiring subwoofers, visit our Subwoofer Wiring Guide: Subwoofer Wiring Guide

Product Summary

Manufacturer: Earthquake Sound
Model number: DBXI-15
UPC: 1111968975947
Weight: 30.00 lbs
Internal SKU: dbxi15
Internal product ID: 38108