Upgrade your car audio system with the Infinity Kappa Speaker Combo , combining the Infinity KAPPA-63XF 6.5-inch 2-Way Coaxial Speakers with the Infinity KAPPA603CF Component/Midrange Speakers for a more complete and immersive in-car listening experience. Designed around Infinity's Kappa-series acoustic engineering, this combination brings together powerful glass-fiber woofer technology, high-resolution tweeter performance, and carefully engineered speaker components to deliver detailed highs, rich midrange, and strong bass response.
The KAPPA-63XF is a 6.5-inch 2-way coaxial speaker designed for full-range sound reproduction from a compact installation footprint. With up to 255W peak power handling , 85W RMS power handling, a 45Hz–40kHz frequency response, and 93dB sensitivity at 2.83V, it is well suited for upgrading factory door or rear-deck speakers. Its glass-fiber woofer cone and hi-roll rubber surround provide controlled bass response and durability, while the integrated tweeter delivers detailed high frequencies.
The Infinity KAPPA603CF adds dedicated speaker components to the combination, featuring Infinity's Plus One™ glass-fiber woofer technology , high-resolution textile dome tweeter technology, UniPivot and angled tweeter positioning, adjustable tweeter output, and a compact crossover design. The Kappa-series architecture is designed to provide greater control over sound staging and frequency reproduction compared with a basic factory speaker setup.
Combo Includes
Infinity Kappa: KAPPA-63XF 6.5-Inch 2-Way Coaxial Car Speaker
Infinity Kappa: KAPPA603CF Component/Midrange Speaker
Complete Infinity Kappa Speaker Combo: Combines the KAPPA-63XF coaxial speaker with KAPPA603CF speaker components.
Infinity Plus One™ Technology: Glass-fiber woofer technology increases effective cone area for powerful bass performance.
High-Resolution High Frequencies: Kappa-series textile dome tweeter technology delivers detailed and smooth treble reproduction.
Up to 255W Peak Power – KAPPA-63XF: High power handling provides dynamic performance for upgraded car audio systems.
85W RMS – KAPPA-63XF: Suitable for high-quality factory and amplified car audio installations.
40kHz High-Frequency Capability: Kappa-series speaker design extends high-frequency reproduction for detailed sound.
Hi-Roll Rubber Surround: Helps provide controlled woofer movement, durability, and consistent bass performance.
Adjustable Tweeter Output: KAPPA603CF features 0dB or -3dB tweeter output level control for sound adjustment.
UniPivot & Angled Tweeter Design: Allows improved tweeter positioning and sound direction.
Compact Installation: Designed for practical automotive installations while maintaining high-performance components.
Infinity Kappa Speaker Comparison
Speaker Type: 2-Way Coaxial Component / Midrange Speaker
Speaker Size: 6.5 Inch Kappa 603CF Midrange Driver
Woofer Technology: Glass-Fiber Woofer Plus One™ Glass-Fiber Woofer Technology
Tweeter: Integrated 2-Way Tweeter High-Resolution Textile Dome Tweeter Technology
RMS Power: 85W Not Specified
Peak Power: 255W Not Specified
Frequency Response: 45Hz – 40kHz Up to 40kHz High-Frequency Capability
Sensitivity: 93dB at 2.83V Not Specified
Tweeter Adjustment: Not Specified 0dB / -3dB
Tweeter Positioning: Integrated UniPivot & Angled Tweeter
Mounting Depth: 2 1/8" Top / 2 1/2" Bottom Not Specified
Woofer Surround: Hi-Roll Rubber Not Specified
Infinity KAPPA-63XF Specifications
Model: KAPPA-63XF
Speaker Type: 6.5-Inch 2-Way Coaxial
Maximum Power: 255W Peak
RMS Power: 85W
Frequency Response: 45Hz – 40kHz
Sensitivity: 93dB at 2.83V
Top-Mount Depth: 2 1/8 Inches
Bottom-Mount Depth: 2 1/2 Inches
Cutout Diameter: 5.128 Inches
Frame Width: 6.136 Inches
Frame Length: 6.136 Inches
Infinity KAPPA603CF Features
40kHz High-Resolution Textile Dome Tweeter
Patented Plus One™ Glass-Fiber Woofer Technology
0dB / -3dB Tweeter Output Level Control
UniPivot Tweeter Design
Angled Tweeter Positioning
3-Way Upgradability
Compact Speaker Design
High-Sensitivity Midrange Configuration
Slim Crossover Design
What's Included
2 × 6.5-Inch 2-Way Speakers: 2 × KAPPA 603CF Midrange Drivers
2 × Plastic Adapter Brackets: 2 × Grilles
8 × 1-3/8" Screws: 2 × Cables
8 × 1/2" Screws: 2 × Custom-Fit Mounting Adapters
8 × Speed Clips: 2 × Foam Gaskets
2 × Foam Gaskets: 24 × Screws
2 × Infinity Logo Badges: 8 × Speed Clips
Installation Template: 1 × 2.5mm Allen Head Bit
Installation Manual: 2 × Infinity Logo Badges
—: 2 × Brand Stickers + Owner's Manual
Why Choose the Infinity Kappa Speaker Combo?
Complete Kappa-Series Upgrade: Combines coaxial and component-oriented speaker technology in one package.
Powerful Bass: Infinity Plus One™ glass-fiber woofer technology delivers strong and controlled low-frequency performance.
Detailed Highs: High-resolution textile dome tweeter technology provides extended high-frequency detail.
Flexible Sound Tuning: The KAPPA603CF offers adjustable tweeter output for system tuning.
OEM Audio Upgrade: An excellent choice for replacing factory speakers with higher-performance Infinity components.
Amplifier Friendly: The KAPPA-63XF's 85W RMS handling makes it suitable for use with appropriately matched aftermarket amplifiers.
Frequently Asked Questions
What speakers are included in this Infinity Kappa combo?
The combo includes the Infinity KAPPA-63XF 6.5-inch 2-way coaxial speakers and the Infinity KAPPA603CF component/midrange speaker set .
How much power can the KAPPA-63XF handle?
The KAPPA-63XF is rated at 85W RMS with 255W peak power handling.
What is the frequency response of the KAPPA-63XF?
The supplied specification lists a frequency response of 45Hz–40kHz.
Does the KAPPA603CF have tweeter adjustment?
Yes. The supplied specifications list 0dB and -3dB tweeter output level control.
Does the combo include mounting accessories?
Yes. Both products include their respective mounting hardware, adapters, gaskets, wiring/accessories, and installation documentation as listed above.
Is professional installation recommended?
Yes. Professional installation is recommended to ensure correct mounting, polarity, wiring, crossover/tweeter adjustment, and proper integration with the vehicle's audio system.
