🎉 Happy New Year!
Search  for anything...
Infinity

Infinity Kappa 800W 8" 800 Watt Car Audio Subwoofer

    • Based on 247 reviews
Condition: New
Checking for product changes
$98.95 Why this price?

Buy Now, Pay Later

As low as $16.49 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 4 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, Jan 9
Order within 22 hours and 2 minutes
Available payment plans shown during checkout

Style: Subwoofer


Features

  • Power Rating
  • Peak: 1600 watts
  • RMS: 400 watts
  • Frequency Response: 34Hz - 200Hz
  • SSI (Selectable Smart Impedance)

Description

The Kappa Series voice coil employs a two-sided ducted airflow design that cools the voice coil increases power handling and improves reliability. This aero-cooling design is unique among aftermarket subwoofers.Kappa subwoofer cones incorporate glass-fibers for exceptional accuracy and detail. Inherently non-resonant the glass-fiber cones eliminates distortion so your music—and nothing but your music—comes through loud and clear.

Brand: Infinity


Speaker Maximum Output Power: 1600 Watts


Frequency Response: 2E+2 Hz


Connectivity Technology: wired


Mounting Type: Car Mount


Material: Plastic


Model Name: KAPPA800W


Speaker Type: Subwoofer


Special Feature: Bass Boost


Recommended Uses For Product: For Music Players


Compatible Devices: ['Smartphone', 'Tablet', 'MP3 Player', 'Laptop']


Subwoofer Diameter: 8 Inches


Unit Count: 1.0 Count


Controller Type: Voice Control


Included Components: SPAEAKER


Product Dimensions: 10.59"D x 10.51"W x 7.2"H


Item Weight: 9.8 Pounds


Is Waterproof: FALSE


Charging Time: 34 Hours


Warranty Type: Standard Warranty


Number of Items: 1


Control Method: App, Remote


Speaker Size: 8 Inches


Power Source: Corded Electric


Vehicle Service Type: Car


Package Type: Standard Packaging


Subwoofer Connectivity Technology: Wired


Connectivity Protocol: Ethernet


Includes MP3 player?: No


Specific Uses For Product: Car


UPC: 050667371319 050667373979


Style: Subwoofer


Global Trade Identification Number: 79


Manufacturer: Harman


Item Weight: 9.8 pounds


Item model number: Kappa 800W


Is Discontinued By Manufacturer: No


Date First Available: June 7, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jan 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Punchy Bass for My BMW Z3!
Style: Subwoofer
The Infinity Kappa 800W 8" subwoofer delivers exceptional sound quality and powerful bass in my custom sealed box. It fits perfectly in my BMW Z3 and significantly enhances the audio experience. Crisp, deep, and impressive—highly recommended for a solid upgrade!
Reviewed in the United States on August 29, 2024 by Jack of Trades
    • The most important thing to know is these are BAD A_S.
Style: Subwoofer
Review Image by Christopher R. Christopher R.
Tried sealed & ported, if you’re going, sealed the smaller, the box, the more power you need, and if you go much bigger than optimal .4 ft.³ you might as well throw a port in there, I’ve settled on a .8 ft.³ 3” port 10.6” tuned to 43Hz and yup that hit the spot, that’s a cross between sealed and ported (port 2” from back of enclosure) and yes this woofer drops off silent at exactly 34Hz just as the spec sheet says, now one of these rattles my entire living room like a 12” HT sub, 2 may be way over kill in my coupe we’ll see, oh ya and I’m an SQ guy, this driver ported is NOT sloppy like larger drivers, although I favor sealed designs, this specific driver, I think sounds better, Ported, even for sound quality, I am not and will not push this driver to its limits. 200w @2 ohms is more than enough I guess the most important thing is to let this thing play for a half a day at mid volume 4-6 hours +/- it really does start sounding better and better …….have fun Ok edit: I was thinking I’m gonna need 10’s, nah, slipped them into this BBox after they broke in , don’t need 10’s these 8’s are normal 10’s. …...8 ft.³ ported is all these suckers need. Or .4 ft.³ sealed. Before breaking they had a lot of snappy bass after 10 hours. They have a deep and full chest thump, you can hear these well outside the car for sure, and they do sound a lot bigger than they are Now running them sealed .40 ft3 splitting 600w to them from a PPI ATOM series amp, and they sound excellent, of course I cannot turn my head unit up past 28 of 35 gain is at 1/3 with an input signal of less than 2V ……crazy stuff, they easily rival my old school JBL GT 1000’s, you can even cross these a little higher into the Midwoofers range if you like, and cross them to a mid range in Tweeter for some home stereo sound, I’m content ... show more
Reviewed in the United States on July 7, 2023 by Christopher R. Christopher R.
    • Great budget HiFi Sub
Style: Subwoofer
Review Image by Scharfschutzen Scharfschutzen
Review Image by Scharfschutzen Scharfschutzen
Review Image by Scharfschutzen Scharfschutzen
Review Image by Scharfschutzen Scharfschutzen
Review Image by Scharfschutzen Scharfschutzen
I own two of these subs and built three boxes: Two 1.0 cubic ft ported boxes with 3" flared "aero" precision ports turned to 45 HZ with 1/2" MDF walls and corner bracing. The third, for shits and giggles, was a .5 cubic ft 1" MDF sealed box with heavy bracing, just to hear how that would sound. I wish I had a second sealed box, but I got lazy after building three, so I digress. These recommendations came from the manual, but I modeled them in Bass-Box Pro, thinking I could do better. Lo-and-behold, Infinity knew what they were doing and and these gave them the most-optimal response. I'm feeding them 450W each from a Crown XLi1500. They are to fill in low end for a pair of Magnepan MMGs. I use a MiniDSP 2x4 for correction/EQ and a UMIK-1 to measure room response. I replaced two BIC Formula F-12s, which were loud, but not very musical; they are much better-suited for movies/home theater applications. Sound is obviously very subjective, but I love the way these sound, especially with Magnepans, which are hard to get to blend with a lot of subs. Doing a sine-wave sweep, I cannot differentiate when the subs roll off and the speakers take over. These are only 8" budget subs, so obviously they aren't going to play super low or loud, but they get down to around 35 hz before dropping off. They advertise 34-200 HZ response and take RMS all day long, so Infinity rated them accurately (not exaggerated like most car-audio equipment can be.) I took them into my car, but I much-prefer them in the house. I have two Sundown SA-18s in my Kia Soul so it's kind of an apples-to-oranges comparison. My previous system sub-stage was three Dayton Audio RSS390HO 15s, which are obviously much better at accuracy/hifi, but the Sundowns put them to shame in the SPL department. My background is Mechanical Design and Technical Writing & Training. The most expensive system I've heard was a pair of Wilson Audio Chronosonic XVX with a pair of Wilson Audio Subsonics; total system/room price was $1.6 million. The next best listening room I've heard was a McIntosh XRT1.1K line-array setup. I've demo'd tons of gear from Klipsch, KEF, Paradigm, Vandersteen, Bowers & Wilkins, Focal, Magnepan, Martin Logan, and McIntosh's lineups, as well as many headphones, including flagships from Sennheiser, Grado, Focal, AKG, Shure, Sony, and more. I own tons of headphones from the above-mentioned companies and then some. I attend audio competitions such as Parts Express and Slamology; I enjoy both premium SQ and, on occasion, extreme SPL. ... show more
Reviewed in the United States on May 17, 2021 by Scharfschutzen Scharfschutzen
    • Fantastic option for Logic 7 Replacement
Style: Subwoofer
Review Image by Nicholas White Nicholas White
Review Image by Nicholas White Nicholas White
Used as a replacement driver for my W211 Benz’s blown 10 inch Logic 7/Harman Kardon factory subwoofer. Wired in at 2ohms, mounting was as simple as cutting a bracket to fit the factory mount (as this stepped down a size). I needed a free-air driver that matched the factory drivers thiele small parameters as closely as possible, it seems this Kappa 8” more than exceeded my expectations. I run Kappa Component sets in my VIP/Audio Build Legend, and they’re the main reason I gave Infinity another go for this application. I’m extremely glad I did as the bass is so tight and clean, even in a free-air setup. MAKE SURE YOU MAKE A BAFFLE. I cannot stress this enough as it’s the secret to getting any free air sub to sound fantastic, this Kappa’s high sensitivity, and various techs make it extremely hard to beat for the price. If you’re eyeballing a Kicker 10” as an option for a factory Benz sub replacement, stop now, and just order your choice of 8” or 10” Kappa. I went with 8” as I listen to a lot of rock and old school music, the 10” would be better suited to rap and hip-hop, that being said the 8” still digs as low as 27Hz in the rear deck, that’s ridiculously low for any 8” driver, let alone in a free-air setup. Highly recommended by an audiophile! ... show more
Reviewed in the United States on April 19, 2023 by Nicholas White Nicholas White
    • Wider than a normal 8
Style: Subwoofer
Had to open the 8 inch subwoofer box opening Diameter was bigger. Still breaking in but can handle power acoustic rzr2500. Does not hit hard but sounds amazing
Reviewed in the United States on August 16, 2023 by Robert
    • Very good!
Style: Subwoofer
Review Image by Jasper brar Jasper brar
Very good sub gives notes a 12” can’t! Only thing is u have to make sure u seal the front from back, it took me some learning. Front wave can’t mix with back wave period. So seal holes with whatever. I’m getting there, but I ended up getting the sound I wanted from the mdf board and boom mat! And it’s 800w max! 400rms !! Crap that ton for a 8”! I’m only pushing 300rms maybe 350 to it and it’s banging hard! Don’t pass! And don’t buy the new version/one , same thing as this but it’s 299$.. ... show more
Reviewed in the United States on October 3, 2023 by Jasper brar Jasper brar

Can't find a product?

Find it on Amazon first, then paste the link below.