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13

2. Remove the screw from the center of the volume control and remove the knob.

3. Lift the clear plastic cover on the control and spray GC SPRA-KLEEN, LPS Contact

Cleaner, or equivalent into the control. Replace the knob and rotate the control
several times.

4. Replace the screw and close the case.

B

UZZING OR HUMMING NOISE IN SOUND SYSTEM

.

þ

There is nothing wrong with the T17 Transmitter. One or more pieces of equipment in
the sound system are being disturbed by RF (Radio Frequency) signals produced by the
T17. The most likely suspects are your amplifier, mixer, or tape deck. The RF gets into
the other equipment primarily through the power cord, speaker wires, or unshielded
inputs, all of which can act as antennas. Try the following steps.

1. Move the Transmitter away from the other sound equipment. 

2. Make sensitive equipment more immune to RFI/EMI. The manufacturers of your

audio equipment may offer application notes for this purpose. Williams Sound offers
a document giving suggestions for improving RF immunity in existing audio
equipment. (

Technical Bulletin: Buzz Or Hum In The Sound System, 

FRM 531)

Unless you have the necessary technical skills, this is best left to a qualified
electronics repair technician. 

Williams Sound 

®

Helping People Hear

Summary of Contents for PPA VPE

Page 1: ...s Sound Helping People Hear MAN 035G PERSONAL PA Value Pack System Wide Band FM Wireless Listening System Model PPA VPE Transmitter Model T17 T17 6 Receiver Model R7 R7 4 R7 6 Installation Guide User...

Page 2: ......

Page 3: ...IO CONNECTION USING A MICROPHONE TURNING OFF DC MICROPHONE POWER RECEIVER USE INSTRUCTIONS 9 PPA R7 RECEIVER ADDITIONAL RECEIVERS USING A RECEIVER WITH A HEARING AID BATTERY INFORMATION 11 SINGLE USE...

Page 4: ...has two principal parts the T17 Transmitter and the R7 Receivers Much like a miniature radio station the Transmitter and microphone pick up the sounds you want to hear and broadcast them over an FM ra...

Page 5: ...denser microphones Supplies DC power for condenser microphones Level Control Screwdriver adjust control used to set the microphone input level or the audio input level ON Indicator Light Glows when po...

Page 6: ...For use with the rubber duckie type antenna supplied with the T17 T17 TRANSMITTER REAR PANEL POWER INPUT JACK Connects to the plug on the wall transformer power supply AUDIO INPUT An RCA type jack for...

Page 7: ...with a 3 5 mm mini phone plug can be used with the T17 Plug the microphone into the Mic jack on the front panel of the T17 The T17 is designed to supply positive DC voltage to the plug tip of 2 wire...

Page 8: ...cord from the T17 and remove its antenna Step 2 Use a phillips type screwdriver to loosen the two screws on the rear of the Transmitter Remove the cover Slide the circuit board out of the case Step 3...

Page 9: ...he On indicator will light Turning the knob in the direction of the arrow will increase the volume Turning the knob against the arrow will decrease the volume To avoid depleting the battery make sure...

Page 10: ...ers can be used with hearing aids using three different methods NECKLOOP TELECOIL COUPLER Neckloops are cords which hang around the neck and couple magnetically with T Coil equipped hearing aids SILHO...

Page 11: ...003 rechargeable If the sound becomes weak or distorted replace the battery The indicator light may still be on even with a battery that is weak Do not leave dead batteries in the receivers FURTHER S...

Page 12: ...und microphone is plugged into the Mic jack on the front of the T17 transmitter Make sure the antenna is installed and connected properly See page 7 INSUFFICIENT RANGE GOOD RECEPTION NEAR TRANSMITTER...

Page 13: ...ly suspects are your amplifier mixer or tape deck The RF gets into the other equipment primarily through the power cord speaker wires or unshielded inputs all of which can act as antennas Try the foll...

Page 14: ...istance you must yield to them A list of cities where other radio services are known to exist is included with the transmitter Do not use frequencies that are known to be used by licensed radio servic...

Page 15: ...two channels away from the one you are experiencing interference on DO NOT TOUCH ANY OF THE OTHER ADJUSTMENTS Step 5 Re assemble the Transmitter and plug it in Connect a tape player or radio to the tr...

Page 16: ...vers R7 6N channels 1 6 are set to frequencies 72 1 72 5 72 9 75 7 74 7 and 75 3 MHz respectively The Receiver must be tuned with a weak and somewhat noisy signal If tuned too close to the transmitter...

Page 17: ...will be much louder Tune back and forth to find the center of the point of best response to the program being heard Step 9 Mark down the date and if a new frequency has been chosen mark it down inside...

Page 18: ...use or products that have been modified If you experience difficulty with your system call for Customer Assistance 1 800 328 6190 If it is necessary to return the system for service a Williams Sound...

Page 19: ...n 3 5 mm plug 32 Other styles available R7 4 Channel Selector 4 position rotary switch Dimensions Weight 3 25 W x 6 875 L x 1 75 H 82 5 mm x 174 6 mm x 44 5 mm 13 oz 368 5 g Color Black Power U S Cana...

Page 20: ...Williams Sound Corp 10321 West 70th St Eden Prairie MN 55344 U S A 800 328 6190 952 943 2252 FAX 952 943 2174 www williamssound com 2005 Williams Sound Corp MAN 035G...

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