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Image Dynamics IDQ8 D4 V.4

250W RMS 8" IDQ V.4 Series Dual 4 ohm Car Subwoofer

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Image Dynamics IDQ8 D4 V.4

250W RMS 8" IDQ V.4 Series Dual 4 ohm Car Subwoofer

$159.99

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25 ft. of Streetwires 12 Gauge Speaker Cable

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$37.85

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Dynamat Sound Dampening Trunk Kit

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

$94.95

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

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

$7.99

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FREE Vented Enclosure with Your 8" Subwoofer Purchase!

Add an Atrend 8SQV Vented Subwoofer Enclosure to your 8" Subwoofer purchase and save $56. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

55.95

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Image Dynamics IDQ8 D4 V.4

$159.99

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Atrend 8SQV

$55.95

Special Price $0 ($55.95 if purchased separately)

Atrend 8SQV

• 8" Single Pro Series Vented Subwoofer Enclosure
• Premium carpeted finish
• Silver Spring Loaded Terminal Cups
• Completely Miter And Dado Panels
• Glued And Braced With Fasteners

(Offer 1 of 1)

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$159.99

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General Features:

  • 8" Dual 4 ohm IDQ V.4 Series Subwoofer
  • Power Handling:
    • Peak: 500 watts
    • RMS: 250 watts
  • Recommend power range: 100 - 250 watts RMS
  • Mica-reinforced polypropylene cone woofer
  • Parabolic roll surround
  • High-temperature aluminum voice coil
  • Top-mount depth: 4.95"
  • Cutout Diameter: 7.26"
  • Sensitivity: 82.2dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Also found as: IDQ8D4V4, IDQ8D4V.4

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
IDQ V.4 (Image Dynamics)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
8"
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.
500 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.
Dual
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".
82.2 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.
14 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.
Mica Injected Polypropylene (MIPP)
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.
Parabolic Roll
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

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
Sealed
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.
0.73 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.
1 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.
4.95"
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.
7.26"

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.
35.05 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.
16.20 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.
.43
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.
.64
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.
2.90 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.
1.31

Warranty and Return Policy

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

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
5.0
Value
5.0
Features
5.0
Design
5.0
Usability
5.0
Alex

Hickory, NC

Overall
Durability
Value
Features
Design
Usability
Great build quality

July 27, 2015

This 8 inch Idq has really impressed me with sound quality. Using 400 watts in a .75 down firing enclosure in the rear seat floorboard it is incredible. Using it in my daily driver 06 civic, amps under both front seats, 4 sets of 6.5 components in doors and rears deck. I have nothing in my trunk and it baffles people that ride in the car. Looking to add another.

9 of 11 found this helpful

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Tyler

Kaukauna, WI

Overall
Durability
Value
Features
Design
Usability
Great sound

August 29, 2015

I would definitely recommend the imagedynamics ID8 . it's got impressive sound qaulity and response . I had a re rex 8 and this thing kills that. I have it in a 02 camaro to save space and it's perfect for that . most people think I got a big 10 inch sub . makes me laugh. Gotta have a the right box box tho.

3 of 4 found this helpful

Was this review helpful to you?

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 $37.85

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

Dynamat Sound Dampening Trunk Kit

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

Your Price $94.95

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 $18.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

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

Your Price $74.99

1mm All Purpose Solder

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

Your Price $7.99

12 oz. Can of Adhesive Spray

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

Your Price $8.99

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

Gold Plated Dual Terminal Banana Plug Connector

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

Your Price $1.99

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 IDQ8 D4 V.4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 Image Dynamics IDQ8 D4 V.4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

3 Image Dynamics IDQ8 D4 V.4 Subwoofers

Mono Amp

4 Channel Amp

4 Image Dynamics IDQ8 D4 V.4 Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Browse 2 questions and 1 answer
Hide answersShow all answers | Sort by
Will the IDQ8 D4 V.4 work with the Kicker CXA600.1 Amp? If so, what is the best way to wire it?
john g on Jun 29, 2016
Best Answer: http://www.sonicelectronix.com/item_107699_Kicker-CXA600.1-43CXA6001.html

Yes, that'll work well. Just make sure the amplifier is tuned correctly by your installer. The subwoofer will be wired in Parallel to a 2ohm final load, as shown below.

http://www.sonicelectronix.com/product/img/subwoofer_wiring/1_sub_DVC_4_ohm_mono.jpg
Kicker 43CXA6001
Kicker 43CXA6001
Reply (1) · Report · Rick MStaff on Jun 29, 2016
· Add Answer · I Have This Question Too (0)
Hi i have two re audio rt pro 8s in a ported box its 2 cubic feet tuned before displacement and i want to switch them out for two image dynamics idq8s will that box work for the idqs? thank you
arturo r on Aug 5, 2016
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

IDQ8 D4 V.4

UPC

823871006212

Weight

14.00lbs

Internal SKU

idq8d4v4

Internal Product ID

91604

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 IDQ8 D4 V.4