Nady Systems QH50NC warranty Using Your Headphones, Troubleshooting, Specifications, No sound

USING YOUR HEADPHONES

1.Your headphones are supplied with an in-line battery compartment on the cable. Grasping the housing firmly with your hands remove the battery door by sliding it open as indicated by the arrow on the cover. Insert a fresh alkaline AAA battery.

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 in-line battery compartment housing on the headphones cable. The red LED will light whenever power is ON and you should then hear that the ambient noise is reduced. If you're using the headphones in a quiet location you may not need the noise-canceling feature. In that case, simply leave the power OFF and use like standard passive headphones.

5.Turn on the power of the equipment to which are connected and you are ready to enjoy listening noise-free, even if you are in a noisy environment.

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	20Hz-20KHz
Impedance	32 ohms
Sensitivity	120dB/mW (power on)/ 115dB/mW (power off)
Noise Reduction Level	-10dB, 50Hz-1KHz
Power Supply	Single AAA alkaline battery
Plug	3.5mm stereo mini-plug
Cord	50 inches, +/-5%
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