Introduction
The Koss CS100 Speech Recognition Computer Headset is designed for clear audio communication and accurate voice input. This headset is suitable for various applications including speech recognition software, online gaming, and general computer telephony. Its design focuses on user comfort and reliable performance.
Product Features
- Noise-Cancellation Microphone: Delivers clear voice transmission by reducing background noise, ideal for noisy environments.
- Comfortable Ear Cushions: Foam ear cushions provide an open, hear-through sound and maximize comfort during extended use.
- Adjustable Headband: Ensures a secure and comfortable fit for various head sizes.
- Dual 3.5mm Plugs: Separate 3.5mm connectors for headphone audio and microphone input, ensuring broad compatibility with computers and other devices.
- Long Cable: An eight-foot (2.4 meter) cord allows for flexible movement and comfortable positioning.
- Dynamic Audio Elements: Provides high sensitivity and reduced distortion for clear, high-performance sound across all volume levels.
Setup Instructions
- Identify Audio Ports: Locate the audio output (headphone) and microphone input ports on your computer or device. These are typically color-coded (green for audio, pink for microphone) or marked with corresponding icons.
- Connect Headphone Plug: Insert the 3.5mm plug with the headphone icon (often black) into your device's audio output port.
- Connect Microphone Plug: Insert the 3.5mm plug with the microphone icon (often grey) into your device's microphone input port.
- Adjust System Settings: After connecting, you may need to adjust your computer's sound settings to select the Koss CS100 as the default playback and recording device. Refer to your operating system's sound settings for detailed instructions.

Operating Instructions
- Wearing the Headset: Place the headset over your head so that the ear cushions comfortably cover your ears. Adjust the headband for a snug fit.
- Adjusting the Microphone: Position the flexible boom microphone approximately one to two inches from your mouth for optimal voice pickup. The boom can be rotated up and down to move it out of the way when not in use.
- Volume Control: Adjust the audio volume using your computer's system volume controls or the volume settings within your application.
- Microphone Mute: If your computer or application has a microphone mute function, use it to temporarily disable the microphone when needed.

Maintenance
- Cleaning Ear Cushions: Gently wipe the foam ear cushions with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials. Allow to air dry completely before use.
- Cleaning Microphone: Wipe the microphone foam cover with a soft, dry cloth. If necessary, a slightly damp cloth can be used, ensuring no moisture enters the microphone element.
- Cable Care: Avoid sharp bends or excessive pulling on the cable to prevent internal damage. Store the cable neatly when not in use.
- Storage: Store the headset in a clean, dry place away from extreme temperatures and direct sunlight. The headset can be folded for compact storage.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| No sound from headphones |
|
| Microphone not working |
|
| Sound distortion or static |
|
Specifications
- Brand: Koss
- Model: CS100
- Connectivity: Wired (Dual 3.5mm Jack)
- Ear Placement: On-Ear
- Microphone Type: Electret Noise-Cancelling Boom Microphone
- Frequency Range: 30Hz-20kHz
- Cable Length: 8 feet (approximately 2.4 meters)
- Color: Silver and Black
- Item Weight: 0.5 Grams
Warranty and Support
The Koss CS100 Speech Recognition Computer Headset is covered under a Limited Lifetime Warranty. For warranty claims, technical support, or further assistance, please contact Koss customer service through their official website or the retailer where the product was purchased. Keep your proof of purchase for warranty validation.
For more information, visit the official Koss website: www.koss.com