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Image Dynamics ID12 D4 V.3

250W 12" ID V.3 Series Dual 4 ohm Subwoofer

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List price $249.99

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Bass In All Sizes with ID Subs

Image Dynamics' ID series car subwoofers are the perfect solution for anyone looking to add some base into their vehicle. The various available sizes (8",10",12", and 15") make them suitable for any application in any vehicle, even those with limited space. Ranging from 300 watts to 700 watts of peak power makes them perfect to to satisfy any bass needs, whether you are adding a single sub or numerous subs. The ID series subs are equipped with a mica polypropylene cone woofer for rigidity and an optimized motor and suspension design for optimum high linear excursion. Available in Dual 2 ohm and 4 ohm version for various wiring options to meet any needs. So if you are looking to get a little more serious with your bass then look no further than Image Dynamics' ID series subwoofers.

  • 12" Dual 4 ohm ID V.3 Series Subwoofer
  • Power Handling:
    • Peak: 450 watts
    • RMS: 250 watts
    • Recommended Power Range: 100-400 watts
  • Impedance: Dual 4 ohm
  • Mica Polypropylene cone woofer
  • Rubber surround
  • Black anodized aluminum high temperature copper voice coil
  • Stamped steel basket for improved rigidity and better power handling
  • Optimized motor structure that uses finite element analysis for symmetrical and long linear excursion
  • Also found as: ID12D4 V.3, ID12 V.3 D4, ID12 D4, ID12D4, ID12V.3 D4, IDv3
  • Sensitivity: 88.6dB
  • Mounting Depth: 6"
  • Cutout dimensions: 11"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
ID V.3 (Image Dynamics)
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.
450 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.
250 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.
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".
88.6 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.
17.00 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.
Magnet Structure
Defines the overall structure of the subwoofers magnet.
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.
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.

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 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.
0.8 cubic feet
Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in 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.
1.50 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.
1.50 cubic feet
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in 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.
2.0 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.
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.
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.
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.
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.
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.
Efficiency Bandwidth Product (EBP)
This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

Specials with this Item

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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


Denver, CO

Sound Great, Very Detailed...

March 30, 2012

These are a pretty detailed sounding subwoofer. At low volumes you can still here individual bass notes which is what I use as a determining factor when gauging a subs overall performance and what my ears seem to detect as a "quality sub". Many subs only sound good when cranked, and these sound good at ALL volumes from low to flat out pounding. I was actually pretty surprised at how loud and hard hitting these subs are. I unfortunately had just upgraded my sub amp though and I melted the voicecoils on these in about an hour! That is NOT a fault of the subs, it is my own abuse of the product. I would feel very comfortable playing these with up to 300w rms, but not the 750 I had going to each of them... again, I know I had too much power going to them, they were a temporary product for me while I was getting ready to upgrade to higher power handling subwoofers... I think I may try the next higher series of these subs, if they sound as clean and detailed and can handle my amp, they are surely to be the best sounding subs I've ever owned. On pair easily with former JL w'3 in sound quality, just not the power handling. I currently have 2 re-sex12's that POUND but don't have the clarity I'm looking for so I'm thinking of plunking down the funds on the next higher series of image subs based solely on the outstanding detail of these subs I'm writing the review on.

My ONLY complaint about these subwoofers is the plastic cover over the magnets. Mine arrived off of the magnet and had worked loose during shipping. The only thing holding the entire plastic cover over the magnet was a thick washer glued to the bottom of the magnet, and then the cover glued to that washer.. looked pretty hokey cheap to me to do this. The next series up looks to be of a little better build quality in the basket and magnet structure. The frame around the edge of the subwoofer is super thin too, which I found to be quite a turn off.

Overall great sound but build quality was lacking quite a bit on this series. If that doesn't bother you, they would be a great choice for someone with around 200-300w rms per sub used. I had them sealed 1.20 cu ft.

2 of 2 found this helpful

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September 18, 2013

Great product Great service. Bought this woofer for its sonic abilities and it has lived up to its reputation for quality bass with sonic detail at low and hi volume with modest power. Thanks for friendly and fast service
Pros, great sound tight clean and clear sound.
cons, none found

0 of 0 found this helpful

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Sub Zero

Los Angeles, CA

Solid Sub!

December 1, 2012

Bought this sub to replace my JL W3 v1 because JL is no longer making dual voice coil subs with the exception of the W6 (not sure why?). Overall, this is a great sub for the price! I agree with one of the other reviews regarding the punch, it does hit more like a 8" sub, most noticeable when listening to Electronic music. This is one area where Image subs beat out JL for a 12". If true depth of sound is what you're looking for, then stick with JL. I don't think anyone beats JL when it comes to the richness of their subs, at least this is my opinion.

Overall I give this sub 8 out of 10. Great sub!

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Memphis, TN

Very Happy

September 18, 2012

I kind of went out on a limb ordering this (came in a combo package with CTX-6.5cs the CTX-6.5 and the RE Audio XTX-500.5) I had never heard of Image Dynamics until I had shopped around for a new system for my 04 Trailblazer. I am by no means an audiophile, but I know what sounds good, and these things do. You can definitely push this thing and get your car rumbling if that's your cup of tea. I'm using it for low end reinforcement not showing off(not that I haven't).

I have never owned a subwoofer until this one. I have not been disappointed in my purchase by any means. I have this in the minimum sized enclosure that is recommended in the directions(scosche enclosure from Walmart). This has given me a great amount of low end punch, and low enough response for what I listen to and then some. Since I haven't had a sub before I'm honestly not sure what I should expect out of it. What I do know is that the low end is clean, sounds tight and has a great amount of low end.

Having this sub has truly changed what I expect to hear in most cars. It has been a completely new listening experience for me. It's amazing how much cleaner you can make your system when your 2ways and Components are not used to be the primary low end reinforcement. I highly recommend this sub.

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small price big sound

December 23, 2011

running off an old PPI 200w amp, free air in my 2002 Lexus IS300, this sub sounds awesome! distinctive bass notes, hits the lows and punches like an 8".

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Accessory Tools and Products

Accessories added

Single 12" Subwoofer Angled Truck or Hatchback Box Enclosure

CARB Compliant, 5/8" MDF Shallow Sub Enclosure Lined with Polyfil.

Your Price $29.99

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

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 $9.99

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 $109.95

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 $14.99

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

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 Image Dynamics ID12 D4 V.3 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Image Dynamics ID12 D4 V.3 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Image Dynamics ID12 D4 V.3 Subwoofers

Mono Amp

4 Channel Amp

4 Image Dynamics ID12 D4 V.3 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Browse 1 question and 1 answer
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Why did you choose this?
Sonic Electronix Store
I was looking for a SQ sub that was inexpensive and will be more transparent then my current subs. I love tight punchy bass from woofers that perform well in sealed enclosures. I can't wait to get them installed in my sealed 3/4" mdf enclosure with 1.25 ft3/woofer.
Andrew T on Dec 10, 2014

Product Summary


Model Number

ID12 D4 V.3



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: Image Dynamics ID12 D4 V.3

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