Infinity Kappa 123WDSSI 12″ 1500W Subwoofer
R2,495.00

The Infinity Kappa 123WDSSI | 12″ 1500W Subwoofer
FEATURES:
- 12″ high-performance car subwoofer
- Selectable Smart Impedance (SSI) — switch between 2Ω or 4Ω
- 500W RMS / 1500W Peak power handling
- Glass-fiber reinforced cone for tight, accurate bass
- High-roll rubber surround for extended excursion
- Oversized motor structure for strong low-frequency output
- High sensitivity design for louder bass with less power
- Heavy-duty steel basket for rigidity and durability
- Accepts up to 8-gauge speaker wire
- Suitable for sealed or ported enclosures
Out of stock
Infinity Kappa 123WDSSI 12″ 1500W Subwoofer

Product Packaging
PRODUCT FEATURES:
Infinity Kappa 123WDSSI 12″ 1500W Subwoofer

The Infinity Kappa 123WDSSI | 12″ 1500W Sub
FEATURES:
- 12″ high-performance car subwoofer
- Selectable Smart Impedance (SSI) — switch between 2Ω or 4Ω
- 500W RMS / 1500W Peak power handling
- Glass-fiber reinforced cone for tight, accurate bass
- High-roll rubber surround for extended excursion
- Oversized motor structure for strong low-frequency output
- High sensitivity design for louder bass with less power
- Heavy-duty steel basket for rigidity and durability
- Accepts up to 8-gauge speaker wire
- Suitable for sealed or ported enclosures
Experience powerful, controlled bass with the Infinity Kappa 123WDSSI 12″ Subwoofer, engineered for enthusiasts who want flexibility, output, and premium sound quality.
Delivering 500W RMS and up to 1500W peak power, this high-performance subwoofer features Infinity’s Selectable Smart Impedance (SSI) technology, allowing you to switch between 2Ω or 4Ω operation to perfectly match your amplifier setup. The glass-fiber reinforced cone and high-roll rubber surround provide tight, accurate low frequencies with excellent durability, while the oversized motor structure ensures strong, deep bass response across a wide frequency range.
Designed for both sealed and ported enclosures, the Kappa 123WDSSI offers impressive efficiency with its 92dB sensitivity, producing louder bass with less power. Heavy-duty steel construction and installer-friendly terminals (accepting up to 8-gauge wire) make installation simple and reliable.
Whether you’re upgrading your daily driver or building a serious sound system, the Kappa 123WDSSI delivers the punch, clarity, and versatility expected from Infinity’s premium Kappa series.
Please note that Click and Collect is only applicable for items weighing a volumetric maximum of 7 kg; items that weigh more than the maximum will be received through standard My Audio shipping.
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Related
| Brand |
Infinity |
|---|---|
| Color |
Black |
| Packaging Weight |
7.50 kg |
| Item Weight |
6.21 kg |
| Packaging Size |
39.7 x 39.7 x 23 cm (L x W x H) |
| Volumetric Weight |
9.06 kg |
| EAN |
692581983931 |
| Specification | Detail |
|---|---|
| Brand | Infinity |
| Model | Kappa 123WDSSI |
| Speaker Size | 12″ Subwoofer |
| Power Handling (RMS) | 500W |
| Max Power | 1500W |
| Impedance | Selectable 2Ω / 4Ω (SSI Switch) |
| Sensitivity | 92 dB |
| Frequency Response | 25Hz – 175Hz |
| Voice Coil | Single Voice Coil with Smart Impedance Selector |
| Cone Material | Glass-Fiber Reinforced |
| Surround | Rubber |
| Basket | Steel |
| Mounting Depth | ±178 mm |
| Cut-Out Diameter | ±284 mm |
| Recommended Sealed Box | ±1.3 cu.ft |
| Recommended Ported Box | ±2.5 cu.ft |
| Terminal Type | Heavy-duty push terminals |
| Enclosure Material (for Makro field) | MDF (recommended) |
| Grille | Not Included |
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1 × Infinity Kappa 123WDSSI 12″ Subwoofer
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1 × Trim Ring / Screw Cover
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1 × Adhesive Foam Gasket
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8 × Mounting Screws
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1 × Mounting Template
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1 × User Manual
