Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your Infinity KAPPA203S 2" (50mm) Silk Dome Midrange with Bandpass Crossover. Please read this manual thoroughly before use to ensure proper functionality and longevity of your product.

Figure 1: Infinity KAPPA203S 2" (50mm) Silk Dome Midrange with Bandpass Crossover components.
What's in the Box
- KAPPA203S Midrange Speakers (Quantity: 2)
- Bandpass Crossovers (Quantity: 2)

Figure 2: The Infinity KAPPA203S product packaging, containing the midrange speakers and bandpass crossovers.
Features
- Silk Dome Tweeters: Edge-driven silk dome tweeters with oversized voice coils for smooth highs and impressive thermal power handling up to 40kHz.
- Glass Fiber Woofer Cones: Lighter and stiffer cones with increased surface area for high-output, deep, and robust bass.
- Adjustable Tweeter Output: Push-button on the angled tweeter allows output level control of 0dB or -3dB for system linearity optimization.
- Compact Crossovers: 2-way component system crossovers are compact and offer 2-way and 3-way selections for midrange upgrades.
Specifications
| Model Name | KAPPA203S |
| Speaker Type | Component |
| Mounting Type | Flush Mount |
| Material | Glass Fiber |
| Speaker Size | 2 Inches |
| Woofer Diameter | 2 Inches |
| Tweeter Diameter | 0.75 Inches |
| Impedance | 3 Ohms |
| Speaker Maximum Output Power | 100 Watts |
| Frequency Response | 40 KHz |
| Signal-to-Noise Ratio | 94 dB |
| Product Dimensions | 6"D x 2"W x 4"H |
| Item Weight | 1.8 Pounds |
Setup
Proper installation is crucial for optimal performance. The KAPPA203S system is designed for flexibility in vehicle integration.
Midrange Speaker Installation
The 2" (50mm) midrange speakers are designed for flush mounting. Ensure adequate space and secure mounting to prevent vibrations.

Figure 3: Detailed view of the Infinity KAPPA203S midrange speaker, highlighting its glass fiber cone.
Tweeter Installation and Orientation
The silk dome tweeters can be rotated 270° for excellent stereo imaging, allowing you to direct the sound precisely towards the listening area. This flexibility helps optimize the soundstage based on your vehicle's interior.

Figure 4: The Infinity KAPPA203S silk dome tweeter, designed for high-resolution audio.
Crossover Network Configuration
The compact bandpass crossovers are essential for directing the correct frequency ranges to the midrange speakers. They feature 2-way and 3-way selections, enabling an upgrade from a 2-way component system to a 3-way system with perfect tonal balance by adding an optional 2" or 3" midrange speaker.

Figure 5: The compact bandpass crossover for the KAPPA203S system, showing input and output terminals.

Figure 6: The KAPPA203S crossover module, indicating the midrange output connection.
Operating
The KAPPA203S system is designed to deliver high-fidelity audio. Utilize the adjustable features to fine-tune your listening experience.
Tweeter Output Level Control
The tweeters include a push-button for adjusting the output level to either 0dB or -3dB. This allows you to optimize the brightness of the high frequencies to your personal preference and the acoustics of your vehicle, ensuring a balanced sound profile.
Sound Performance
The combination of silk dome tweeters and glass fiber woofer cones provides a wide frequency response and high sensitivity, resulting in clear highs and punchy, defined bass. The true 4-ohm impedance technology (as shown in the product video) ensures efficient power draw from your amplifier.
Video 1: Official product video demonstrating the features and sound capabilities of the Infinity Kappa Speakers, including tweeter adjustability and woofer technology.
Maintenance
To ensure the longevity and optimal performance of your KAPPA203S speakers, follow these general maintenance guidelines:
- Regularly inspect speaker cones and surrounds for any signs of damage or wear.
- Keep speakers free from dust and debris using a soft, dry cloth.
- Avoid exposing speakers to extreme temperatures or moisture.
- Ensure all wiring connections remain secure and free from corrosion.
Troubleshooting
If you encounter any issues with your KAPPA203S speakers, consider the following common troubleshooting steps:
- No Sound: Check all wiring connections from the amplifier to the crossovers and speakers. Ensure the amplifier is powered on and receiving a signal.
- Distorted Sound: Reduce the volume level. Check for proper gain settings on your amplifier. Ensure speakers are not over-powered or under-powered. Verify that the crossover settings are correct.
- Weak Bass: Confirm correct polarity of speaker connections. Ensure the woofer cones are free to move without obstruction.
- Harsh Treble: Adjust the tweeter output level to -3dB using the push-button on the tweeter.
If problems persist, consult a professional car audio installer or contact customer support.
Warranty
This product is covered by a manufacturer's warranty. For specific details regarding warranty coverage, duration, and claims procedures, please refer to the warranty card included with your product or visit the official Infinity website. Extended protection plans may also be available for purchase.
Support
For additional support, product information, or to explore other Infinity products, please visit the official Infinity Store:





