Kicker
KICKER 51KSS6904 KS Series 6x9" Component Speakers â 150W RMS
● In stock
Ask our Morayfield team about fitment, installation parts and labour pricing.
Take your vehicle's audio system to the next level with the KICKER 51KSS6904 KS Series 6x9-Inch Component Speakers. Designed for enthusiasts who demand powerful output, exceptional detail, and installation flexibility, the KS Series delivers premium sound quality with concert-level performance.
The 6x9-inch woofers feature internally dampened polypropylene cones and durable rubber surrounds to produce accurate midbass and midrange response with excellent control. Paired with premium 25mm silk dome tweeters, the system delivers smooth, natural highs and impressive detail across the entire frequency range.
One of the standout features of the KSS6904 is its versatile installation design. The removable phase plug allows the tweeters to be mounted directly into the woofer using the included articulating adapter, creating a premium coaxial-style setup with adjustable tweeter positioning. Alternatively, the tweeters can be installed separately for a traditional component speaker configuration and superior sound staging.
With high power handling, compact crossover networks, and multiple mounting options, the KSS6904 is an ideal upgrade for both factory and aftermarket audio systems.
Key Features
- Premium 2-way component speaker system
- 6x9-inch (160mm x 230mm) woofers
- 25mm silk dome tweeters for smooth, natural highs
- Up to 150 Watts RMS power handling
- Convertible component or coaxial-style installation
- Articulating tweeter pod for improved off-axis performance
- Polypropylene woofer cones for accurate sound reproduction
- Durable rubber surrounds for long-lasting reliability
- Compact crossover networks for easier installation
- Multiple tweeter mounting options included
- High sensitivity for impressive output
- Protective grilles included
Specifications
| Specification | Details |
|---|---|
| Speaker Type | 2-Way Component System |
| Woofer Size | 6x9" (160 x 230mm) |
| Tweeter Size | 1" (25mm) |
| Tweeter Dome Material | Silk |
| Rated Impedance | 4 Ohms |
| Recommended Amplifier Power | 15-150 Watts RMS |
| Sensitivity | 92 dB (1W/1m) |
| Frequency Response | 35Hz â 21kHz |
| Woofer Mounting Hole Diameter | 143 x 215mm |
| Woofer Mounting Depth | 75mm |
| Flush Mount Tweeter Hole Diameter | 45mm |
| Flush Mount Tweeter Depth | 17mm |
| High Pass Crossover | 12dB @ 4,000Hz |
| Low Pass Crossover | None |
| Tweeter Level Adjustment | 0dB, -4.5dB, -9dB |
| Grilles Included | Yes |

Specifications
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Audio Specifications
- Power Rating
- RMS Power
- 150 W
- Peak Power
- 450 W
- Recommended Amplifier
- Speaker Size
- Impedance
- 4 Ohm
- Audio Type
- Product Role
- Brand
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