Using Your Headphones, Troubleshooting

QH50NC_userguide 2/5/07 10:01 AM Page 3

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

QH50NC specifications

The Nady Systems QH50NC is a premium set of headphones designed for audio professionals and enthusiasts who value sound quality, comfort, and advanced noise-cancellation technology. This model is particularly popular among musicians, sound engineers, and everyday users looking for an immersive listening experience.

One of the standout features of the QH50NC is its active noise-cancellation capability. This technology effectively reduces ambient sounds, allowing users to focus on their music, podcasts, or audio tasks without distractions. The headphones incorporate dual microphones that continuously analyze the surrounding sound environment, canceling out unwanted noise. This feature is especially useful in noisy environments such as airplanes, busy offices, or city streets.

Comfort is another key characteristic of the QH50NC. The headphones feature plush ear cushions and an adjustable headband crafted from premium materials. This ergonomic design ensures extended wear without discomfort, making them suitable for long listening sessions or studio work. Weighing in at a lightweight design, users can enjoy their audio experience without feeling weighed down.

In terms of audio performance, the QH50NC does not disappoint. The headphones are equipped with high-fidelity drivers that deliver crystal-clear sound across a wide frequency range. Whether it is deep bass, clear mid-range tones, or crisp highs, the QH50NC provides a well-balanced audio experience. Moreover, they support high-resolution audio formats, ensuring that users experience their music as it was intended by the artists.

Another notable technological advancement in the QH50NC is its Bluetooth connectivity, allowing for wireless pairing with a variety of devices. This feature provides users with the freedom to move around without being tethered by cables, offering convenience while listening or taking calls. The headphones come with an extended battery life, ensuring they can last through long workdays or travel without the need for frequent recharging.

Additionally, the QH50NC is built with durability in mind. The robust construction and foldable design make them easy to store and travel with, while also ensuring they can withstand the rigors of daily use.

Overall, the Nady Systems QH50NC is a compelling option for users seeking advanced features in noise cancellation, comfort, and sound quality. Whether for professional audio applications or everyday listening, these headphones stand out as a reliable companion that delivers an exceptional audio experience.