QH30NC_userguide 2/5/07 9:32 AM Page 3

USING YOUR HEADPHONES

1.Your headphones are supplied with an in-line battery compartment on the right headband. Grasping the headphone firmly with your hands and slide the bat- tery door as indicated by the arrow on the cover. Flip open the hinged door and insert a single 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 dual plug adapter supplied. 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 headphones to the equipment to which you will be listening.

3.Unfold the headphone and 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 comfort- ably around your ears. Always wear the headphones with the battery compart- ment on the right as marked on the headbands 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 right earcup. 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 head- phones.

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.

7.Always fold the headphone for storage and transport.

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

30mm diameter

Frequency Response

20Hz-20KHz

Impedance

32 ohms

Maximum Power Output

60mW (P.M.P.O.)

Sensitivity

10dB SPL at 1Khz

Noise Reduction Level

-12dB @ 300Hz

Power Supply

..............................................................

Single AAA alkaline battery

Plug

3.5mm stereo plug (dual prong airline audio plug adapter included)

Length of Cord

5 feet, +/-10%

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.

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Nady Systems QH-30NC warranty Using Your Headphones, Troubleshooting, Specifications, No sound, Noise Reduction Absent
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QH-30NC specifications

Nady Systems QH-30NC is an advanced headphone model designed for professionals and audio enthusiasts who seek optimal sound quality paired with noise-canceling capabilities. This headphone model showcases Nady Systems’ commitment to providing high-performance audio solutions, making it suitable for various applications including music production, live sound, and everyday listening.

One of the standout features of the QH-30NC is its active noise-cancellation technology. This innovative system works by utilizing built-in microphones that detect external sounds and generate sound waves that effectively cancel out background noise. This provides a more immersive listening experience, allowing users to focus solely on their audio without distractions from the surrounding environment.

The QH-30NC boasts a lightweight and comfortable design, featuring padded ear cups and an adjustable headband. This ergonomic build ensures that users can wear the headphones for extended periods without discomfort, making it an excellent option for long studio sessions or during travel. The quality of materials used in the construction guarantees durability, ensuring that these headphones can withstand daily wear and tear.

In terms of audio performance, the headphones offer a balanced and clear sound profile. They are engineered with high-quality drivers that deliver deep bass, warm mids, and clear highs, making them versatile for all genres of music. The frequency response is wide, allowing for accurate reproduction of both subtle details and powerful soundscapes.

Connectivity is another important feature of the QH-30NC, as it is designed for both wired and wireless use. Users can connect the headphones via a standard 3.5mm jack or enjoy the freedom of wireless listening through Bluetooth technology. This flexibility allows for seamless integration with various devices such as smartphones, tablets, and laptops.

Additionally, the QH-30NC comes equipped with an in-line microphone and remote control, enabling hands-free calling and convenient audio playback controls. The built-in rechargeable battery offers impressive battery life, ensuring users can enjoy their music for extended periods without interruption.

In conclusion, the Nady Systems QH-30NC combines effective noise-canceling technology, superior audio performance, and user-friendly features to create a compelling choice for anyone in need of high-quality headphones. With its focus on comfort and functionality, the QH-30NC stands out in a crowded market, catering to the needs of both casual listeners and professional users alike.
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