QH50NC_userguide 2/5/07 10:01 AM Page 3
USING YOUR HEADPHONES
1.Your headphones are supplied with an
2.The headphones are provided with a 3.5mm stereo mini plug for the signal input and can be used with a variety of AV equipment as supplied: CD, DVD, or MP3/4 players, personal or laptop computers, or home stereo systems. It can also be used for most airline audio with the optional dual plug adapter (not sup- plied). Some audio sources with a 1/4” jack, such as professional audio mixers, require the use of an optional readily available 1/4”— 3.5mm mini stereo plug adapter. After you have confirmed plug/jack compatibility, connect the head- phones to the equipment to which you will be listening.
3.Adjust the headband by pulling up or down on each end so it rests gently on top of your head and the ear cup cushions fit comfortably around your ears. Always wear the headphones with the cable on the left to ensure proper L/R stereo sound.
4.Turn on the power for the noise canceling circuitry with the sliding ON/OFF switch on the
5.Turn on the power of the equipment to which are connected and you are ready to enjoy listening
6.Always make sure the power is turned off and LED is not lit whenever you are storing the headphones or not using them.
TROUBLESHOOTING
No sound
•Check the connection of the headphones and the AV equipment to which is connected
•Check that the connected AV equipment is turned on and the volume is up
Noise Reduction Absent
•Check that the headphones power is turned on (LED lit)
•Replace the battery with a fresh alkaline
SPECIFICATIONS
Driver | 50mm diameter |
Frequency Response | |
Impedance | 32 ohms |
Sensitivity | 120dB/mW (power on)/ 115dB/mW (power off) |
Noise Reduction Level | |
Power Supply | Single AAA alkaline battery |
Plug | 3.5mm stereo |
Cord | 50 inches, |
Typical Battery Life | Up to 25 hours (depending on listening volume) |
For product improvement purposes, design and specifications are subject to change at any time without prior notice