1. Introduction
Thank you for choosing the Koss UR40 Collapsible Over-Ear Headphones. These headphones are designed for comfortable listening with a lightweight, retro-style design. This manual provides essential information for the proper use and care of your headphones.
2. Product Overview
The Koss UR40 headphones feature a lightweight, collapsible design for portability and comfort. Key features include:
- Frequency Response: 10-20,000 Hz for a wide audio range.
- Impedance: 60 ohms.
- Diaphragms: Titanium-coated, high-polymer diaphragms for accurate sound reproduction.
- Magnets: Neodymium iron boron rare-earth-magnet structures for enhanced sound.
- Voice Coils: Oxygen-free-copper voice coils for high signal clarity.
- Ear Cushions: Closed leatherette ear cushions provide maximum isolation and deep bass.
- Headband: Airy mesh sling for soft, breathable support.
- Design: Lightweight frame (approximately 0.19 kg) folds into a compact configuration for easy portability.
3. Setup
To begin using your Koss UR40 headphones, follow these steps:
- Unfold the Headphones: Gently unfold the headphones from their compact position until the earcups are ready to be placed over your ears.
- Connect to Audio Source: Insert the 3.5 mm (1/8-inch) audio plug into the headphone jack of your audio device (e.g., smartphone, computer, MP3 player).
- Use 6.3 mm Adapter (if needed): If your audio device requires a larger connection, attach the included 6.3 mm adapter to the 3.5 mm plug before inserting it into the device.
This video demonstrates the features of the Koss UR40 headphones, including the 3.5mm plug and 6.3mm adapter, open-back design, isolating ear cushions, and collapsible structure for portability.
4. Operating Instructions
Once connected, you can begin using your headphones:
- Wearing the Headphones: Place the earcups over your ears, ensuring a comfortable fit. The adjustable headband and airy mesh sling are designed for extended wear.
- Adjust Volume: Control the audio volume directly from your connected audio device.
- Folding for Storage: When not in use, fold the headphones into their compact form for easy storage and transport. This protects the headphones and saves space.
5. Maintenance
Proper maintenance ensures the longevity and performance of your headphones:
- Cleaning Ear Cushions: Wipe the leatherette ear cushions with a soft, damp cloth. Avoid harsh chemicals or abrasive materials.
- Cable Care: Avoid sharp bends or excessive pulling on the audio cable. Store the cable neatly to prevent tangling and damage.
- Storage: Store the headphones in a clean, dry place, preferably in their folded configuration, to protect them from dust and physical damage.
6. Troubleshooting
If you encounter issues with your Koss UR40 headphones, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound | Loose connection, incorrect volume setting, faulty audio source. | Ensure the audio plug is fully inserted. Check the volume on your device. Test with another audio device. |
| Distorted sound | Volume too high, damaged cable, audio source issue. | Lower the volume. Inspect the cable for damage. Test with another audio device. |
| Uncomfortable fit | Improper adjustment. | Adjust the headband for a comfortable fit over your ears. The airy mesh sling should rest gently on your head. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Koss |
| Model Name | UR40 |
| Model Number | 155524 |
| Ear Placement | Over Ear |
| Impedance | 60 Ohms |
| Frequency Range | 10 Hz - 20 kHz |
| Additional Features | Foldable, Lightweight |
| Connectivity Technology | Wired |
| Headphone Jack | 3.5 mm Jack |
| Item Weight | 0.19 Kilograms |
| Enclosure Material | Iron |
| Included Accessories | 6.3 mm adapter |
8. Warranty and Support
The Koss UR40 Collapsible Over-Ear Headphones are covered by a Lifetime Limited Warranty on parts and labor, provided by Koss. For warranty claims or technical support, please refer to the official Koss website or contact their customer service directly.
Manufacturer: Koss
For more information, visit the Koss Store on Amazon.