Williams Sound
®
Helping People Hear
8
multiple transmitters are used. Placing the
transmitter high above the audience (15 to 30 feet)
and aimed slightly downward (5 to 15°) will ensure
the longest “throw” of the infrared beam. Angling
the transmitter inward towards the center of the room
also increases the coverage of the seating area.
Remember that opaque objects block the infrared
light. Thus, transmitters cannot be concealed behind
an opaque walls, curtains, etc. Neither should
transmitters be used in areas of extreme high or low
temperatures, humidity, or chemical environments.
Mounting the TX3 to a wall or ceiling:
Step 1:
Use the 5/32" allen wrench to loosen the
tension bolt in the clamp assembly enough
to release the ball. DO NOT unscrew the
tension bolt completely. Using the
mounting plate as a template, mark the
hole locations on the mounting surface.
Use fasteners appropriate for the mounting
surface (wood screws, lag bolt, wall
anchor) to attach the mounting plate.
Recommended fastener size is 1/4".
Step 2:
Attach the clamp plate to the rear of the
transmitter, using (2) 1/4 x 20 x 1/2"
socket head screws and 3/16 hex wrench
provided. Place the mounting plate in the
position indicated for ceiling or wall
mounting.
Step 3:
Place the transmitter/clamp plate assembly
onto the the mounting plate ballshaft. Aim
the transmitter at the desired downward
angle and support it fully while using the
hex wrench to tighten the tension screw.
After initial installation, the ball will
slowly compress under pressure. Check
the tension screw after 15 minutes and re-
tighten if necessary. DO NOT over-
tighten.
If rotational adjustment is required, use a
7/16" open-end wrench to loosen the jam
nut on the ballshaft. Rotate the transmitter
and re-tighten the jam nut.
Fig. 8: Bracket 012 Ceiling Mounting
Front of TX3
Jam Nut
Fig. 9: Bracket 012 Wall Mounting
Fig. 7: SB-3 Wall/Ceiling Mount
Mounting Plate
Ballshaft
Clamp Plate
To
Wall
Or
Ceiling
To
Transmitter
Jaw
Tension Screw
