10-Watt Powerhorn (320-2038) Operation Faxback Doc. # 8610 ADJUSTING THE SHOULDER STRAP The powerhorn comes with the shoulder strap attached. Follow these steps to remove the plastic bands (included for shipping) and adjust the strap's length. 1. Slide the ends of the strap through the buckle and the strap hanger bar. 2. Slide off the plastic bands. 3. Slide the ends of the strap back through the buckle and the strap hanger bar. Leave enough slack in the strap around the buckle so you can slide the strap back through. 4. Slide the ends of the strap through the buckle again until the strap is the desired length and no slack remains around the buckle. USING THE POWERHORN WITH THE MICROPHONE MOUNTED You can use the powerhorn with the microphone mounted if you want to point the powerhorn in the desired direction with one hand. Follow these steps to use the powerhorn with the microphone mounted. 1. Slide SIREN ON/OFF on the left side of the handle to OFF. 2. Align the slot in the microphone's back with the bracket on the battery compartment cover. Then slide the microphone onto the bracket and push down until the microphone locks into place. 3. Make sure the TALK bar on the left side of the microphone is not in the LOCK position, since this disables the talk button on the powerhorn's handle. 4. Firmly hold the powerhorn and place the microphone about 5 inches from your mouth. 5. Press the talk button on the powerhorn's handle and speak into the microphone. Release the talk button when you are finished speaking. 6. Rotate the VOLUME knob on the right side of the microphone counterclockwise toward 10 to increase, or clockwise toward 0 to decrease the powerhorn's sound level. USING THE POWERHORN WITHOUT THE MICROPHONE MOUNTED For extended use, you can shoulder the powerhorn and hold the lightweight microphone (instead of the entire powerhorn) in your hand. Follow these steps to use the powerhorn without the microphone mounted. 1. Slide SIREN ON/OFF on the left side of the handle to OFF. 2. Place the strap over your shoulder. 3. Place the microphone about 5 inches from your mouth and press the TALK bar on the left side of the microphone when you speak. To lock the bar in place so you can speak continuously, slide it in the direction of the LOCK arrow until it clicks. Slide the bar to the opposite position to unlock it. 4. Rotate the VOLUME knob on the right side of the microphone counterclockwise toward 10 to increase, or clockwise toward 0 to decrease the powerhorn's sound level. USING THE POWERHORN'S SIREN To turn on the siren, push SIREN ON/OFF to ON. To turn it off, push SIREN ON/OFF to OFF. Warning: Do not point the powerhorn directly at someone when you sound the alarm. USING THE FEEDBACK CONTROL The powerhorn might cause feedback when the microphone is too close to the speaker, or when you use it indoors. If the microphone is too close to the speaker, move the microphone away from the speaker. If you experience feedback problems while using the powerhorn indoors, use a small Phillips screwdriver to rotate the FEEDBACK CONTROL inside the battery compartment counterclockwise to reduce feedback. Note: Adjusting the FEEDBACK CONTROL also reduces the volume. To increase the volume, rotate the FEEDBACK CONTROL clockwise until the sound is audible without feedback. If you are unsure how to make this adjustment, have a professional electronics technician adjust it for you. (br/all-9/21/94)