User Guide
Table Of Contents
- System Overview
- Receiver Safety Information
- Recycling Instructions
- Setting Up the PPA VP 37
- Locking Instructions
- Receiver Model PPA R37 Instructions
- Receiver Model PPA R37-8 (optional) Instructions
- Receiver Model PPA R38 (optional) Instructions
- Belt Clip Installation (all Receiver models)
- Using A Receiver With A Hearing Aid
- Receiver Management Suggestions
- Receiver Battery Information
- Troubleshooting Guide
- Personal PA Value Pack System Specifications
- Lifetime Limited Warranty
- Repair Services
PPA T27
17
Sound through receivers is loud, but distorted. Noise (room noise or electronic
noise) seems to grow after talking stops. Audio Indicator Light is continuously on.
• On the front of the T27 transmitter, use a screwdriver to turn the audio
level control counter-clockwise. This will decrease the audio level. The
audio indicator light should flash occasionally, but not be lit continuously.
Sound through the receivers is weak and noisy.
• On the T27 front panel, use a screwdriver to turn the audio level control
clockwise. This will increase the input signal strength. The audio
indicator light should flash occasionally.
• Increase the input signal level from the sound system.
Buzzing or humming noise in sound system.
• There is nothing wrong with the T27 Transmitter. One or more pieces
of equipment in the sound system are being disturbed by RF (Radio
Frequency) signals produced by the T27. The most likely suspects are
the amplifier, mixer, or the audio source. The RF energy 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:
• Move the transmitter away from the other sound equipment.
• Make sensitive equipment more immune to Radio Frequency (RF)
or Electromagnetic Interference (EMI). The manufacturers of your
audio equipment may oer guidance for this purpose. Unless you
have the necessary technical skills, this is best left to a qualified
electronics repair technician.
• Williams AV oers a document giving suggestions for improving
RF immunity in existing audio equipment—Technical Bulletin:
Remedies For Buzz or Hum in Sound System or PPA. This
document is available on our website.