Infinity KAPPA 800W Selectable Smart Impedance (SSI™) Subwoofer

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$179.99

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50% Off a Sound Dampening Kit with Your Subwoofer Purchase!

Add an NVX SDTK20 Sound Dampening Trunk Kit to your Subwoofer purchase and save 50%. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

30.00

125245

487

Infinity KAPPA 800W

$179.99

50% OFF

NVX SDTK20 - 90mil 2.3mm THICK

$59.99

50% Off a Vented Enclosure with Your 8" Subwoofer Purchase!

Add an Atrend 8SQV Vented Subwoofer Enclosure to your 8" Subwoofer purchase and save $28. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

28.00

125245

1156

Infinity KAPPA 800W

$179.99

50% OFF

Atrend 8SQV

$55.99

(Offer 1 of 2)

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$209.98

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The Sound of quality

Sonic Electronix, one of the leaders in car audio, recently visited Harman, the premium global audio and infotainment group, at their research and development locations in Northridge, California and Detroit, Michigan. The purpose of these visits was to utilize and combine the powerful brand of Harman and the industry leading knowledge behind Sonic Electronix to begin working together on developing future car audio projects.

General Features:

8" Selectable Smart Impedance (SSI) Kappa Series Subwoofer

Choose between 2 or 4 ohm impedance at the flip of a switch

Power Handling:

Peak: 1600 watts
RMS: 400 watts

Recommended power range: 34 - 200W RMS
Proprietary aero-cooling design keeps the voice coil cool
Acoustically damped glass-fiber cone
Premium screw down terminals

Accommodates up to 8 gauge wire

Aero-cooled voice coil

Two-sided, ducted airflow design
Increases power handling and improves reliability

Voice Coil Diameter: 2"
Top-mount depth: 5-3/4"
Cutout diameter: 7-1/2"
Frequency Response: 34 - 200 Hz
Sensitivity: 89 dB
Resonance Frequency (Fs): 34.5 Hz
Authorized Internet Dealer
1-year Manufacturer's Warranty

Priced Individually

What is Included:

Subwoofer
Foam Mounting Gasket
3mm Hex Wrench
Owner's manual

Check out the KAPPA 800W Owner's Manual

Subwoofer Series

Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.

Kappa (Infinity)

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.

1600 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.

2 or 4 ohms

Voice Coil Diameter

Diameter of voice coil, usually measured in inches.

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).

34 - 200 Hz

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".

89 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.

9.25 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.

Glass Carbon Fiber

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.

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

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.

5-3/4"

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.

7-1/2"

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.

34.5 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.

12.87 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.

0.412

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.

0.46

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 or 4 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.

WITB: Subwoofers

A detailed list of the equipment (main product and accessories) included with your subwoofer. If special accessories are included in the box, they will be listed and detailed below the main list of equipment.

Paperwork

Paperwork included with the product.

Other Accessory #1

Standard accessories are included in the main list above; however, this line provides specific details on an additional, unique accessory that is included with the product.

Other Accessory #2

Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.

Other Accessory #3

Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.

Other Accessory #4

Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.

Other Accessory #5

Standard accessories are included in the list above special accessories; however, this line provides specific details on an additional, unique accessory that is included with the product.

Authorized Dealer

We're an Authorized Dealer for nearly all the brands and manufacturers we sell. In the rare occasion we are not authorized, we guarantee that the product comes from an Authorized dealer or distributor. As such, we will always assist you even past the return policy to assure you the entire manufacturer warranty is covered in the event you have encounter a manufacturer defect.

Parts Warranty Duration

1 year

Labor Warranty Duration

1 year

Warranty Provider

Manufacturer

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Speaker Wire

Sound Dampening Material

Installation, Tools & Accessories

Enclosure Accessories

25 ft. of Streetwires 12 Gauge Speaker Cable

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

Your Price $46.99

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 $67.99

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 $12.99

Five Piece Installer Panel Removal Tool Kit

Installer's Panel Removal Installation Tool Kit for Car Stereo, Speakers and Car Audio Installs

Your Price $11.99

12 oz. Can of Adhesive Spray

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

Your Price $8.99

Gold Plated Dual Terminal Banana Plug Connector

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

Your Price $1.99

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

Mono Amp

2 Channel Amp

4 Channel Amp

Questions that need answers | My Posts

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Why did you choose this?

Sonic Electronix Store

Need free air sub for back deck of car

Matthew W on Aug 7, 2017

because is made by Harman Kardon use there old school amp CA 260 excellent amp.they make quality stuff.

Ricardo B on Aug 4, 2017

› Infinity › Infinity KAPPA 800W vs DC Audio M3 8 D2 › Infinity 8" Car Subwoofers › Infinity KAPPA 800W vs JL Audio 8W3V3-4 › Infinity KAPPA 800W vs DC Audio M3 8 D4 (8m3 D4) › 8" Car Subwoofers under $200

Manufacturer

Infinity

Model Number

KAPPA 800W

Weight

9.51lbs

Internal SKU

kappa800w

Internal Product ID

125245

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We recently became first time Sonic customers and quickly became repeat customers. Their help over the phone & through email has been exceptional. Knowledgeable & committed to their customers plus their YouTube videos are informative & funny. Great company to deal with and worth checking out.____

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Find the right amplifier for your subwoofers

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.

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