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Infinity Kappa 123WDSSI (INFSUBKA123WDSSIAM)

1500W Peak (500W RMS) 12” Kappa Series Selectable 2 or 4-ohm Subwoofer

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• Peak Power: 1500 watts
• RMS Power: 500 watts
• Impedance: 2 or 4 ohm
• Glass Fiber Cone
• Rubber Surround
• Mount depth: 7"
• Sensitivity: 92 dB

Learn more about the infsubka123wdssiam

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Description


Infinity brand icon

Authorized dealer


Infinity Kappa 123WDSSI

Take Infinity car audio for a ride. Innovative materials and breakthrough engineering have always placed Infinity products in front of the competition. You can expect extreme output from Kappa subs, so be prepared for accuracy and detail that will simply blow you away. The Kappa Series subwoofers feature SSI (Selectable Smart Impedance), a HARMAN-exclusive impedance selector that lets you choose a 2- or 4-ohm impedance at the flip of a switch. Our proprietary aero-cooling design keeps the voice coil cool while optimizing power handling and long-term reliability. Finally, the acoustically damped glass-fiber cones have been engineered to minimize distortion and unwanted artifacts. More performance and flexibility: you get both when you step up to an Infinity Kappa subwoofer.


Product Details:

  • 12" Single 2 or 4 ohm Kappa Series Subwoofer
  • Power Handling:
    • Peak: 1500 watts
    • RMS: 500 watts
  • Glass Fiber Cone
  • Rubber Surround
  • Aero-cooling oversized voice coil design
  • Premium integrated push terminals
  • Terminals accept up to 8-gauge speaker wire
  • 2" High Temperature Voice coil
  • 10.25 mm Xmax
  • Frequency Response: 25 - 175 Hz
  • Smart Selectable Impedance: 2 or 4 ohm
  • Resonance Frequency (Fs): 34.2 Hz
  • Sensitivity: 92 dB
  • Recommended sealed box volume: 1.3 cubic feet
  • Recommended ported box volume: 2.5 cubic feet
  • Top-mount depth: 7"
  • Cutout diameter: 11-1/8"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Infinity Kappa 123WDSSI (INFSUBKA123WDSSIAM) Subwoofer

Mono Amp

Wiring Guide to Wire 2 Infinity Kappa 123WDSSI (INFSUBKA123WDSSIAM) Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 3 Infinity Kappa 123WDSSI (INFSUBKA123WDSSIAM) Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 Infinity Kappa 123WDSSI (INFSUBKA123WDSSIAM) Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp


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Specifications & Details


Subwoofer Specifications
Series
Kappa Series
Subwoofer Size
12"
Peak Power Handling
1500 watts
RMS Power Handling
500 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
2 or 4 ohm
Voice Coil Diameter
2"
Frequency Response
25 - 175 Hz
Sensitivity
92 dB
Xmax (millimeters)
10.25 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Glass Fiber
Woofer Surround
Rubber
Magnet Structure
Single Stacked
Subwoofer Grille
No
Re-Cone Kit Available
No
CTA-2031 Compliant
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Minimum Sealed Box Volume
1.3 cubic feet
Minimum Ported Box Volume
2.5 cubic feet
Top-Mount Depth (Mounting Depth)
7"
Cutout Diameter
11-1/8"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
34.2 Hz
Equivalent Compliance (Vas)
58.7 liters
Total Speaker Q Value (Qts)
0.778
What is in the box?
Paperwork
User manual
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

Kappa 123WDSSI-2

Weight:

16.87lbs

Internal SKU:

infsubka123wdssiam

Internal Product ID:

183189

Customer Ratings & Reviews


Infinity Kappa 123WDSSI (INFSUBKA123WDSSIAM) thumbnail image

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



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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great quality

Easy to install and the changeable impedance is a great feature. Works great with Infinity's kappa One 6 amplifier

By Cole on July 30, 2025 Checkmark Icon Verified purchase

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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.