DOWNLOAD THESE JUMPER SETTINGS IN PDF FORMAT.

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We offer this section so that you may evaluate and possibly correct any problem you may have with your PRO EARS before returning them to us. If it becomes necessary to return anything for service, please call our Service Department at 800-891-3660 to obtain an RMA (Return Merchandise Authorization) before shipping.

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1. Check the batteries. While we actually receive a low number of Warranty returns, over half of the units returned are battery related. Please make sure the batteries are the correct 'N' Size, 1.5 volt, are in good working order, and are facing in the proper direction. The spring end in the battery box is the negative end of the battery (as marked in the battery box). Many of the battery problems occur when using the wrong batteries. There is a similar sized, 12 volt battery on the market that is the same length with a slightly smaller diameter. Using this wrong model battery will void your warranty. Use only the 'N' size, 1.5 volt battery.

2. Make sure the Jumpers have not become dislodged. All PRO EARS electronic models (except the Predator) use Jumpers on the circuit board to allow you to customize the Sensitivity and Gain. To make sure the Jumpers have not become dislodged, you can check this by opening the foam battery flap in the ear cup. The Jumpers are located below the lower right corner of the battery box. Make sure a Jumper is covering either the pins marked L, M, or H. A second Jumper will either be connecting the pins labeled Gain (on position), or be stored over one pin or the other (off position).

3. Check the Jumper settings. All PRO EARS Dimension Series models have a special, internal set of Connector Pins or Jumpers that are used to alter the circuit board sensitivity and Gain settings. These Jumpers are independent of the volume controls. The internal sensitivity is set at the factory to a neutral (medium) setting. However, under certain consistent, high-noise level situations such as industrial machinery, aviation, engine noise as in auto racing, or when unusually high (110 dB to 130 dB) levels are encountered, it is recommended that the circuit board sensitivity be set at the lower level. Doing so will further dampen the high background noise levels and increase the ability to hear lower level sounds such as conversation.

To change the circuit board sensitivity setting, (see diagram) gently pull back the foam cover inside each cup. Position the cup so the batteries are on the top and the speaker is on the bottom. You will see 4 sets of stainless steel pins to the lower right of the battery box. From the left set of pins to the right, they are marked L, M, H, Gain. To adjust the sensitivity it will be necessary to use needle-nose pliers or pointed tweezers to CAREFULLY pull the black cover straight off from its current setting (usually medium) and place it on one of the other pin sets, L for low, or H for high*.

IMPORTANT
1.	PRO EARS ARE EXTREMELY DURABLE, HOWEVER, IT IS NOT ADVISABLE TO EXPOSE THEM TO EXTREME HEAT OR COLD.
2.	CHECK TO ENSURE BATTERIES ARE IN GOOD CONDITION. EVEN THOUGH PRO EARS USE EXTREMELY LONG-LIFE BATTERIES, IT IS ADVISABLE TO ALWAYS CARRY A SPARE SET.

The right most set of pins is for gain. If the black Jumper is covering both of the end-pins, the Gain is on. If it is only covering the bottom pin the Gain is off (this is how the jumper is stored when the Gain is off). In most normal situations, you would use your PRO EARS with the Gain off. Having the Gain on allows you to hear amplified sounds at a very great distance and would prove to be distracting in most situations. A situation where having the Gain 'on' could be advantageous, would be in a hunting or photography situation. You would have the advantage of hearing a game bird calling or animals such as deer, elk, bear, etc., moving through brush at distances up to 100 yards, depending on the surrounding environment.

*Changing the Jumper setting is a delicate operation. RidgeLine is not responsible for damage caused as a result of this procedure.

DOWNLOAD THESE JUMPER SETTINGS IN PDF FORMAT.

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If, after reviewing the troubleshooting information provided above, you still have a question about your PRO EARS, please call our Service Department at 800-891-3660 between 8AM-4:30PM MST, or send an email to Service@Pro-Ears.com. Many times it is possible to rectify your problem over the phone. However, if it is necessary to return the unit(s), you will be given an RMA number for return. Because of the low rate of repairs/returns, your PRO EARS will normally be repaired and shipped back to you within 72 hours of receipt. Please see the Warranty section to ascertain what repairs are covered without cost.