1. Produktüberschreitungview
The Koss QZ-99 Noise Reduction Stereophones are designed to provide an isolated listening experience by reducing ambient sounds. They feature Pneumalite™ ear cushions and a secure headband for effective passive noise isolation. Integrated controls allow for convenient volume adjustment and stereo/mono switching.
These headphones are suitable for environments where external noise reduction is beneficial, such as with racing scanners or metal detectors, or for focused audio listening.
Hauptmerkmale:
- Passive Noise Reduction system isolates the listener from ambient sounds.
- Neodymium magnet structures for clear audio reproduction.
- Closed Pneumalite™ ear cushions and an extra-secure headband create a sealed listening environment.
- Volume control located on the ear cup for easy level adjustment.
- Stereo/Mono switch for enhanced flexibility.
- Single-entry, 8-foot coiled cord for extended reach and tangle resistance.
2. Einrichtung und Verbindung
2.1 Auspacken und Prüfen
Carefully remove the Koss QZ-99 headphones from their packaging. Inspect the headphones and cable for any visible damage. Ensure all components, including the 8-foot coiled cord and the 3.5mm jack, are present and intact.
2.2 Anschluss an eine Audioquelle
- Locate the 3.5mm audio jack on your audio device (e.g., laptop, desktop, tablet, cellphone, music production equipment).
- Insert the 3.5mm plug of the Koss QZ-99 coiled cord into the audio output jack of your device.
- If your device requires a 1/4-inch adapter, use the provided adapter by screwing it onto the 3.5mm plug.
Image: The 3.5mm audio jack, 1/4-inch adapter, and the in-line stereo/mono switch on the Koss QZ-99 cable.
2.3 Anpassung für mehr Komfort
Place the headphones over your ears. Adjust the headband to ensure a snug yet comfortable fit. The Pneumalite™ ear cushions should fully enclose your ears to maximize passive noise reduction and sound quality.
3. Bedienung
3.1 Lautstärkeregelung
The volume control knob is located on one of the ear cups. Rotate the knob clockwise to increase the volume and counter-clockwise to decrease it. Adjust to a comfortable listening level.
3.2 Stereo/Mono-Schalter
An in-line switch on the cable allows you to select between stereo and mono audio output. Set the switch to "STEREO" for standard stereo sound. If your audio source is mono or if you prefer a mono output, slide the switch to "MONO".
Video: Ein Produkt überview demonstrating the features and controls of the Koss QZ-99 headphones, including the adjustable fit, on-ear volume control, and the stereo/mono switch.
4. Wartung und Pflege
- Reinigung: Reinigen Sie die Außenseite der Kopfhörer mit einem weichen, trockenen Tuch. Verwenden Sie keine flüssigen Reiniger oder Lösungsmittel.
- Ohrpolster: The Pneumalite™ ear cushions are designed for durability. If they become worn or damaged, contact Koss customer support for replacement options.
- Lagerung: Store the headphones in a clean, dry place away from extreme temperatures and direct sunlight. Avoid tangling the coiled cord.
- Kabelpflege: Do not pull on the cable to disconnect the headphones from an audio source. Always grasp the plug firmly.
5. Fehlerbehebung
5.1 Kein Ton oder geringe Lautstärke
- Stellen Sie sicher, dass der 3.5-mm-Stecker vollständig in die Audioquelle eingesteckt ist.
- Check the volume control knob on the ear cup and turn it clockwise to increase volume.
- Verify the volume settings on your audio source device.
- Testen Sie die Kopfhörer mit einer anderen Audioquelle, um gerätespezifische Probleme auszuschließen.
5.2 Verzerrter Ton
- Reduce the volume on both the headphones and the audio source.
- Stellen Sie sicher, dass das Audiokabel fest angeschlossen und nicht beschädigt ist.
- Check the stereo/mono switch position. Incorrect settings for certain audio sources can cause distortion.
5.3 Poor Noise Isolation
- Adjust the headband to ensure the ear cushions form a complete seal around your ears.
- Ensure the ear cushions are not damaged or worn, as this can compromise the seal.
6. Spezifikationen
| Besonderheit | Detail |
|---|---|
| Modellnummer | QZ99 |
| Lärmschutz | Schallisolierung (Passive Geräuschreduzierung) |
| Frequenzgang | 40-20,000 Hz |
| Empfindlichkeit | 102 dB |
| Impedanz | 60 Ohm |
| Konnektivitätstechnologie | Verdrahtet |
| Kopfhöreranschluss | 3.5 mm Jack (with 1/4-inch adapter) |
| Kabelfunktion | 8-foot Coiled Cord |
| Steuerungstyp | Volume Control (on ear cup), Stereo/Mono Switch (in-line) |
| Platzierung des Ohrs | Über dem Ohr |
| Material | Metall (Rahmen) |
| Artikelgewicht | 15 Unzen (425 Gramm) |
| Technische Daten | 8.63 x 4.13 x 8.38 Zoll |
7. Garantie und Support
7.1 Haftungsausschluss
The product warranty does not cover misuse of the product. Please refer to the official Koss webDie vollständigen Garantiebedingungen finden Sie auf unserer Website oder in Ihrer Kaufdokumentation.
7.2 Kundendienst
For technical assistance, replacement parts, or further inquiries, please contact Koss customer support. Contact information can typically be found on the Koss official weboder innerhalb Ihrer Produktverpackung.
