Installation guide

Williams Sound
®
Helping People Hear
11
DETAILED SETUP PROCEDURE
STEP 1: CHOOSE A LOCATION AND INSTALL THE TRANSMITTER
It’s usually most convenient to locate the T4 next to the public address equipment because
your transmitter location must have the audio feed and 120 VAC power available.
FOR SIMPLE INSTALLATIONS
Place the transmitter on a level surface where there are no substantial metal or other
electrically conductive objects between the antenna and the listening area. After initial
adjustments, there will be no need to access the unit.
FOR ENGINEERED INSTALLATIONS
The transmitter can be mounted in an equipment rack. Use a Williams Sound rack mount kit
(RPK 005 or RPK 006). Make sure there is good electrical contact between the transmitter
chassis and the rack cabinet.
Ambient temperature of the transmitter location must not exceed 125° F.
STEP 2: CHOOSE A LOCATION AND INSTALL THE ANTENNA
The T4 is equipped with a with a short flexible antenna (ANT 021). The ANT 021 threads
onto a stud recessed in a hole on the top of the transmitter. Do not use excessive force to
tighten the antenna; it need only be finger tight.
The T4 can also be purchased with a coaxial antenna (ANT 005) or Wall Mount Dipole
Antenna (ANT 024).
REMOTE ANTENNA LOCATION TIPS
Install the ANT 005 or ANT 024 with its elements vertical. It should be near or within
the listening area and somewhat above the seats. However, do not install the antenna
directly overhead. There is a null in the coverage area off the ends of the antenna.
The antenna is best installed on a wall 10 to 15 feet above the floor. It may be located in
the next room from the listening area if the separating wall does not contain metal lath,
steel studs, or significant ductwork. Do not install the antenna in an organ chamber. The
numerous pipes of an organ significantly deflect and absorb the radio signal.
The ANT 005 and ANT 024 feedline is classified under the National Electrical Code as
Class II wiring and may be installed in conduit with other Class II wiring. It SHOULD
NOT be installed with Class I (power) wiring.
Even though regulations allow the feedline to be installed with other audio system
wiring, you might still choose not to do this. Because all coaxial cable leaks to some
degree, other improperly shielded audio equipment might be interfered with. In these
cases, either avoid such installation or take steps as outlined in Williams Sound’s
Technical Bulletin: Buzz Or Hum In The Sound System (FRM 531). Other audio
equipment will not disturb the transmitter or its antenna.
Do not connect the coaxial cable to the building or electrical ground in any way.