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Car Audio
Infinity
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Infinity Kappa 683XF 6"x8" / 5"x7" Coaxial Speakers

Sale price $249.99 Regular price $279.99
Shipping calculated at checkout.


Key features

  • Speaker size: 5×7″, 6×8″
  • RMS power per speaker: 100 W
  • Speaker impedance: 3.0 ohms
  • Frequency response: 40 Hz–40 kHz
  • Sensitivity (2.83 V): 93 dB
  • Woofer cone: Plus One fiberglass


Description

Product Overview

Bring clearer high-frequency detail and fuller bass to your car audio system with Infinity Kappa 683XF 6"x8" / 5"x7" coaxial speakers. This 2-way pair combines edge-driven silk dome tweeters with Plus One+ glass-fiber woofers in a relatively shallow package.

The UniPivot tweeters can be aimed toward your listening position, while tweeter level control lets you adjust brightness to suit your vehicle’s acoustics and your taste.

Key Features & Benefits

  • Edge-driven silk dome tweeters: Deliver open high-frequency detail with less distortion at high volume.
  • UniPivot tweeter design: Directs high frequencies toward you to help improve stereo imaging.
  • Tweeter level control: Lets you tailor the brightness to your listening preference.
  • Plus One+ glass-fiber woofer: Its light, shape-retaining cone supports defined bass without requiring excessive amplifier power.
  • Hi-roll rubber surround: Provides controlled woofer movement for clean bass response.
  • Installation hardware included: Adapter rings, screws, speed clips, foam gaskets, and a template support the mounting process.

Technical Specifications

Brand Infinity
Model Kappa 683XF
Speaker type 2-way coaxial speakers
Speaker size 6"x8" / 5"x7"
Impedance 3 ohms
Frequency response 40–40,000 Hz
Sensitivity 93 dB at 2.83 V
Power handling per speaker 100 Watts RMS; 300 Watts peak
Top-mount depth 2-5/16"
Tweeter Edge-driven silk dome; UniPivot design rotatable up to 270°; tweeter level control
Woofer Plus One+ glass-fiber cone with hi-roll rubber surround
Grilles Not included; factory grilles should suit most applications
Warranty 3 years from purchase
In the box Infinity Kappa 683XF owner’s manual; two 2-way speakers; bottom mount adapter rings; screws; speed clips; adhesive foam gaskets; Infinity logo badges; installation template/manual

Why Choose This Product?

The Kappa 683XF is designed for replacing 6x8" or 5x7" factory coaxial speakers with more high-frequency detail and a more tangible bass presence. Its angled, adjustable tweeters offer aiming flexibility when speaker placement is low in the doors.

The 3-ohm impedance and 93 dB sensitivity suit use with a factory radio, while a dedicated amplifier can provide another way to power the speakers. Match your system to the per-speaker power ratings above.

Installation & Compatibility Notes

Check the speaker opening, mounting depth, and existing connections before installation. The listed top-mount depth is 2-5/16"; vehicle fit can vary. The included adapter rings and mounting hardware support installation, but do not establish fitment for every vehicle.

Grilles are not included. Many factory setups can use their existing grilles, and aftermarket grilles may be used if desired.

Frequently Asked Questions

Are these speakers sold as a pair?

Yes. The box includes two 2-way speakers.

What size openings are these speakers intended for?

They are listed as 6"x8" / 5"x7" speakers. Check your vehicle’s opening and mounting requirements before installation.

What does the 3-ohm impedance mean for my system?

The listed impedance is 3 ohms. Confirm that your radio or amplifier supports the speaker load before connecting it.

Do the speakers include grilles?

No. Grilles are not included; the source indicates factory grilles should suit most applications.

What is the power handling per speaker?

Each speaker is rated for 100 Watts RMS and 300 Watts peak.

Explore More

Shop Infinity Kappa 683XF speakers at 12 Volt Outlet. Want to learn more about Infinity? Explore our Infinity brand profile.

Need an amplifier to run these speakers?

Compare car-audio amplifiers by channel count. Ratings shown at 4 Ω. Check your speakers’ impedance and RMS power before choosing an amplifier.

2-Channel Amplifiers

50–125W RMS per channel at 4 Ω

4-Channel Amplifiers

50–125W RMS per channel at 4 Ω

6-Channel Amplifiers

Actual 4 Ω ratings shown for each amplifier

8-Channel Amplifiers

Actual 4 Ω ratings shown for each amplifier

Product Details