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QH30NC_userguide 2/5/07 9:32 AM Page 1

90 DAYS WARRANTY

Nady Systems, Inc. warrants to the original consumer purchaser that your unit is free from any defects in material or workmanship for a period of 90 days from the date of purchase. If any such defect is discovered within the warranty period, Nady Systems, Inc. will repair or replace the unit free of charge, subject to verification of the defect or malfunction upon delivery or shipping prepaid to Nady Systems.

Important:

Please do not return our product to the store where it was purchased. Nady Systems, Inc. accepts the responsibility of keeping you a satisfied customer. This warranty does not apply to defects or physical damage resulting from abuse, neglect, accident, improper repair, alteration, or unreasonable use of the unit resulting in cracked or broken cases or parts, or units damaged by excessive heat, and does not apply to batteries or damage caused by leaking batteries. This warranty does not cover finish or appearance items nor items damaged in shipment en route to Nady Systems Inc. for repair. You must include proof of date and place of purchase (i.e. photocopy of your bill of sale) or we cannot be responsible for repairs or replacement. If factory service is required, you must contact our Service Department at 510/652-2411 for a return authorization (RA) number. Make sure the RA number is clearly marked on the outside of the package. Nady Systems, Inc. will not repair nor be held responsible for any units sent without proper identification and return address or RA number clearly marked on the package. For service, ship units prepaid to: Nady

Systems, Inc., Service Department, 6701 Shellmound St., Emeryville, CA 94608.

Any applicable implied warranties including warranties of merchantability and fitness are hereby limited to 90 days from date of purchase. Consequential or incidental damages resulting from a breach of any applicable express or implied warranties are hereby excluded. This warranty is in lieu of all other agreements and warranties, general or special, express or implied and no representative or person is authorized to assume for us any other liability in connection with the sale or use of this Nady System's product. Some states do not allow limitations on how long implied warranties last and do not allow exclusion of incidental or consequential damages so the above limitations and exclusions may not apply to you. This warranty gives you specific legal rights and you may also have other rights which may vary from state to state.

U S E R G U I D E

RacketBlaster™ QH-30NC

Noise Canceling Stereo Headphones

INTRODUCTION

Congratulations! You’ve purchased one of the finest noisecanceling headphones available. Its innovative technology eliminates unwanted outside noise and enables your private listening pleasure even in noisy environments. Please read this user guide carefully to ensure the best performance of your headphones.

FEATURES

State-of-the-art noise canceling circuit design eliminates

virtually all background ambient noise for total quiet listening enjoyment

Large 30mm drivers for unsurpassed audio — rich, powerful, with full frequency response and punchy bass

Compact folding design and leatherette pouch for easy transport while travel- ing—perfect for private listening without distracting ambient noise in airplanes and other noisy environments

Full-size padded leatherette ear cups and adjustable headband for ultimate longlasting wearing comfort and fit for all head sizes

Uses single AAA battery (included)

3.5mm stereo mini-plug — 2-prong airline jack adapter included

Operates as standard passive headphones when noise canceling circuitry is inactivated

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 battery 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 comfortably around your ears. Always wear the headphones with the battery compartment 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 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.

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.