Koss Headphones HB79S User Manual

Trouble Shooting Guide  
Note: The stereophone will not function, and distortion will  
occur anytime the signal from the screen to the stereophone is  
blocked.  
HB79s / HB80s / HB90s  
INFRARED WIRELESS STEREOPHONE  
OWNER'S MANUAL  
No sound from the stereophone  
Check that the unit is "on" / Check that the stereophone batteries are  
fresh and inserted in the correct direction. / Adjust volume control  
Distortion, background noise  
Verify you are facing the screen / Check batteries  
HB79s / HB80s / HB90s  
1
No*Questions*Asked Lifetime Warranty  
What does your warranty cover? Any defect in material or workmanship.  
For how long after the original purchase? A lifetime  
What will we do? Provide you with a new, or at our option, a reconditioned unit.  
How do you make a warranty claim? First, you must register your product. Go to  
Follow the instructions below to send in your product. Properly pack your unit. Include any  
cables, etc., which were originally provided with the product. We recommend using the original  
carton and packing materials. Include in the package a copy of the sales receipt or other  
evidence of date of original purchase. Also print your name and address and a description of the  
defect.  
Ship the unit standard UPS or equivalent prepaid to:  
Koss Stereophones  
Warranty/Repair Center  
2
4129 N Port Washington Ave  
Milwaukee, WI 53212-1052 USA  
A new or reconditioned unit will be shipped to you prepaid freight.  
What does your Warranty not cover? Installation and set-up service adjustments, Batteries,  
Damage from misuse and neglect, Products which have been modified or incorporated into other  
products, or Products purchased or serviced outside the USA.  
5
How does state law relate to this warranty? This warranty gives you specific legal rights,  
and you may also have other rights which may vary from state to state.  
3
6
For products purchased outside the United States and Canada, see dealer for warranty.  
LIFETIME WARRANTY  
4
This Koss product has a Lifetime Limited Warranty which covers normal use by the initial user  
or purchaser of this particular Koss product. Koss hereby warrants only to the initial user or  
purchaser that this Koss product will be free of any defect in materials and workmanship for  
the life of the product. THIS WARRANTY DOES NOT APPLY TO ANY INITIAL USER OR  
PURCHASER WHO ALLOWS THIS PRODUCT TO BE USED BY MULTIPLE PERSONS. THIS  
WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY FOR THIS KOSS PRODUCT AND IS  
IN LIEU OF ALL OTHER WARRANTIES (EXPRESS OR IMPLIED), INCLUDING ANY WARRANTY  
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. THE SOLE AND  
EXCLUSIVE REMEDIES AVAILABLE TO THE INITIAL USER OR PURCHASER FOR ANY  
DEFECTS IN MATERIALS OR WORKMANSHIP SHALL BE THE OBLIGATION OF KOSS, AT ITS  
SOLE OPTION, TO EITHER REFUND THE PURCHASE PRICE OF THE KOSS PRODUCT, OR  
REPAIR OR REPLACE THE NON-FUNCTIONING OR DEFECTIVE KOSS PRODUCT PROVIDED IT  
IS RETURNED TO KOSS IN SECURE PACKAGING TOGETHER WITH A CHECK FOR $6.00 TO  
OUR FACTORY AT 4129 N. PORT WASHINGTON AVE, MILWAUKEE, WI 53212. If purchased  
outside the U.S., contact the local Koss Authorized Dealer for details. Koss reserves the right  
to replace any discontinued product with one of equal value. KOSS SHALL NOT BE LIABLE  
FOR ANY LOSS, INJURY OR DAMAGES TO PERSONS OR PROPERTY RESULTING FROM THE  
USE OF THIS PRODUCT OR ANY FAILURE OF OR DEFECT IN THIS PRODUCT, NOR SHALL  
KOSS BE LIABLE TO THE INITIAL USER OF THIS PRODUCT OR TO ANY OTHER PERSON OR  
ENTITY FOR ANY GENERAL, SPECIAL, DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL,  
EXEMPLARY, PUNITIVE, OR OTHER DAMAGES OF ANY KIND OR NATURE WHATSOEVER.  
THE REPAIR OR REPLACEMENT OF ANY NON-FUNCTIONING OR DEFECTIVE PRODUCT OR  
THE REFUND OF THE PURCHASE PRICE, AT KOSS' OPTION, SHALL CONSTITUTE KOSS'  
ONLY LIABILITY TO THE INITIAL USER OR PURCHASER, WHETHER SUCH LIABILITY IS  
BASED ON CONTRACT, TORT, STRICT LIABILITY OR OTHERWISE. Some states may not  
allow the exclusion or limitation of damages set forth herein in which case the above language  
may not apply to you. This limited warranty gives you specific legal rights and you may also  
have other rights which may vary among states or provinces. If usage of this Koss product  
violates the guidelines of this limited warranty, Koss will repair the product and charge the  
purchaser for the cost of company time and materials.  
7
COMPONENTS  
The HB79s / HB80s / HB90s IR wireless stereophone  
includes the following components:  
1. Headband  
2. Battery Door  
3. LED  
4. Power On / Off  
Insert Batteries  
5. Noise Cancellation On / Off (HB90s ONLY)  
6. Channel Selector A / B (HB80s, HB90s ONLY)  
7. Volume Control  
1. Locate the battery door on the right earcup.  
2. To open the battery door, insert a flat-ended  
object (like a key) into the slot.  
3. Gently open the door.  
4. Insert 2 "AAA" batteries.  
5. Close battery door(s).  
SLOT  
Turn on wireless operation  
1. Locate the power on / off button on the right earcup.  
2. Press button to "on".  
3. The LED will be red when the unit is powered on.  
Set Volume Control  
IMPORTANT SAFETY INFORMATION  
1. Locate the volume control on the left earcup.  
Avoid playing your stereophone at high volume levels. Some studies have concluded that  
prolonged and extensive exposure to noise in excess of 95dB may impair hearing. Never wear  
your stereophone while operating a motorized vehicle. It may create a traffic hazard and is  
illegal in many areas. Exercise caution if you are wearing your stereophone while engaged in  
activities such as walking, race-walking, jogging, cycling, etc. which may bring you in contact  
with vehicular traffic.  
We are committed to bringing the finest in personal listening to each and  
every one of our customers. If we can ever be of service, please do not hestitate  
to call us at 1-800-USA-KOSS (U.S., Canada & Mexico only).  
Or contact us through the web at WWW.KOSS.COM.  
2. Adjust the volume to a comfortable setting.  
Turn on noise cancellation (HB90s ONLY)  
1. Locate the noise cancellation button on the left earcup.  
2. Press button "on".  
Channel Selection (HB80s and HB90s ONLY)  
1. Locate the channel selection button on the left earcup.  
2. Press this button to alternate between the two channels.  
4129 North Port Washington Ave. Milwaukee, WI 53212-1052 USA  
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