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Kicker 07S12X2

12" Dual 2 ohm Solo X Series Car Subwoofer


We apologize

This item has been discontinued

  • 12" Solo X Series Subwoofer
  • Power Handling:
    • Peak: 5000 watts
    • RMS: 2500 watts
  • Titanium Deposit Impregnated Cone
  • Stitched Rubber Surround
  • Easy removable assembly
  • SPAIR: Simple Pull Apart Insertable Replacement
  • Stamped steel basket
  • B3-Link 3-Way Connection System™ allows binding post, terminal block, or barrier strip connection
  • Strain relief boots on tinsel lead wires
  • UniPlate V.2™ extended pole/backplate assembly
  • X-Vent™ Extended Pole (pat.pend.) for cool operation
  • ARCTIC (Aluminum Rapid Cooling Thermal Induction Centering) Cap™ centers SPAIR and aids cooling by adding mass and channeling air into X-Vent
  • Also found as: SoloX, S12X, and S12X2
  • S4 Quad Spider Array
  • 3.5" Dual 2 ohm Voice Coil
  • Triple stacked magnet
  • Frequency response: 20-100 Hz
  • Sensitivity: 88 dB
  • 1-year Manufacturer's warranty for manufacturer defects only. Blown/burned or damaged voice coils or cones can be repaired only with the additional purchase of a field replacement cone assembly kit. It is sold separately and not included in the price.
2011 Kicker Authorized Online Dealer and eBay Seller

Product History:

Kicker 07S12X2 thumbnail
(newest, current model)
Custom Enclosures 6X9BOXES thumbnail
(previous model, replaced by Kicker 07S12X2)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
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.
5000 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.
2500 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.
2 ohms
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).
20 - 100 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".
88 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.
23 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.

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.
Titanium Deposit Impregnated Cone w/ Rolled Outer Edge
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.
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.
Optional (Accessory required and sold separately)
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.
Yes (Accessory available and sold separately)

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.

Ported / Vented
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.
3.0 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.
6.0 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.
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.


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



westley chapel, FL



November 16, 2011

Love the solo x but i went through 2 recones so far. You really have to break in the woofer the right way or else i will be doing the same mistakes ive made. My last recone is great had it for about 6 months now and it seams its well broken in now. I do smell a funny smell though when i play it hard for a long period of time.

6 of 8 found this helpful

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Anderson, South Carolina


not worth the money

August 3, 2010

I own two of these and have them on a fosgate t4k and a box built to kickers specs and all i can say is that this is a good sub at best. Considering you can get an HCCA Orion or DC audio level 5 or FI BTL for the same price. It is overrated just because it has the kicker name on it. My friend has 2 hcca 12s in her Honda with less power and a prefab box and is still hitting less than 1 db off of me. If I were you I'd look into the Orion HCCA 12s you'll get a lot more bang for your buck. As soon as i find some sucker to take these off my hands for me I'll be getting two Orion HCCA 15s.

6 of 8 found this helpful

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Big Bass

April 5, 2012

You can't go wrong with this sub! I have mine in a 3 cubic foot ported box tuned to 35hz, it sounds real clean even at 4000 watts.

0 of 0 found this helpful

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Oxford, MS


Awesome sub

November 8, 2011

I Have one of these subs in my H3 Hummer in a custom box built to spec running on a 2500 rms Titanium Power amp (I've never seen another one) and i've just got it wired with an rca converter off of the stock sub because I haven't got an aftermarket head unit and it still slams every note. very clear and crisp! I'm not a fan of Kicker subs but I found this for a great price and I am very impressed!

0 of 0 found this helpful

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Oklahoma City, OK


King of Subs

April 8, 2010

Just bought a Solo X and this sub bangs the living hell outta me. Got it running off a ZX1500.1. Cant wait to get the ZX2500.1 to see how that performs.

0 of 0 found this helpful

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Streetsboro, OH


living loud

March 24, 2009

Wow. These subs are very loud. I have two of these subs being powered by two Hifonics BXi 2608D and these subs are eating every watt these amps can producing. If you have the extra money and an amp powerful enough to run them you should, get these subs. You can’t go wrong.

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Seattle, WA



April 30, 2008

This Subwoofer will out perform two 15" l7 i know i used to own a pair of 2008 15" L7 and let me tell u this thing gets the same job done with only a zx1500.1 to it and a good ported box(2.5 sq.ft.. only...) it a monster sub good buy.. u wont be disappointed..........

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Chico=, CA


So loud

October 12, 2007

I own 4 of these in my 2007 Tahoe and i broke my back window the first 10 minutes i had these subs it shakes the ground when i drive and ppl tell me they can here me from 10 blocks so if you want loud then buy these. the bad part is they are so loud that i am going def i cant hear anymore but thats the way to go out. BUY THEM!

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added

NVX 20 ft. of True Spec 8 Gauge Speaker Wire

Flexible multi-strand cable bends and twists to meet your installation needs.

Your Price $49.99

20 Ft. of Kicker 12 Gauge Speaker Wire

Get true gauge Kicker speaker wire to match your Kicker subwoofer!

Your Price $34.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

12” Single Sealed Solobaric Truck Subwoofer Box

Perfect fit for behind or under the seat of your truck!

Your Price $74.95

12” Single Sealed Solobaric Hatchback Subwoofer Box

Ideal 12" subwoofer enclosure for Hatchback vehicles.

Your Price $37.95

12" Single Ported/Vented Pro Solo-Baric Subwoofer Enclosure

Designed for the Pro Solo-Baric L7 Subwoofer.

Your Price $79.95

Dynamat Sound Dampening Bulk Kit

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

Your Price $151.95

Stinger Sound Dampening Bulk Kit

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

Your Price $109.99

Gold Plated Dual Terminal Banana Plug Connector

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

Your Price $4.99

Car Stereo and Speaker Installation Tool Kit

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

Your Price $12.99

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

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

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

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

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

AutoSound 2000 CD-101

Low frequency test CD

Your Price $11.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 Kicker 07S12X2 Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

2 Kicker 07S12X2 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Kicker 07S12X2 Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

4 Kicker 07S12X2 Subwoofers

2 Channel Amp

4 Channel Amp

Product Summary


Model Number






Internal SKU


Internal Product ID


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: Kicker 07S12X2