Williams Sound T800 User Manual
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Ma n u a l a n d us e r Gu i d e
Hearing Helper™ T800 Transmitter
Wireless FM Listening System
Transmitter Model T800
Optional Receiver Model R863
MAN XXX © 2008 Williams Sound Corp.
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Hearing Helper™ T800 Tr a n s M i T T e r
Ma n u a l a n d us e r Gu i d e
Co n T e n T s Pa G e
System Overview .....................................................................3
T800 Transmitter Instructions ................................................ 4-6
Features and Controls ......................................................... 4
Antenna Connection ........................................................... 4
Power Connection .............................................................. 4
Selecting a Frequency ......................................................... 5
Connecting an Audio Source .............................................. 5
Adjusting the Audio Source .............................................. 5-6
Receiver Safety Information .................................................. 7-8
R863 Receiver Instructions ................................................... 9-13
Features & Controls ............................................................ 9
R863 Belt Clip Instructions ............................................... 11
Receiver Battery Information ......................................... 12-13
Receiver Charger Information ................................................14
Troubleshooting Guide ........................................................ 15-16
Warranty ............................................................................... 17-18
System Specications .............................................................19
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sy s T e M ov e r v i e w
Sound System Amplifier
Loudspeakers
Mics
Line-Level Output
R863 Wide-band
Receivers w/Earphones
Line-Level Input
T800 Transmitter
Thank you for purchasing the Hearing Helper™ T800
transmitter from Williams Sound Corp. This wide-band FM
transmitter operates on the 863 MHz bandwidth and connects directly to your facility’s sound system; alternatively,
it can used with a microphone as a stand-alone system. The
T800 is designed for use with the optional R863 FM receiver
to provide hearing assistance or language interpretation to a
listening audience.
The T800 transmitter operates much like an FM radio station.
The transmitter picks up the audio directly from the facility’s
mic or sound system which are broadcasted over an FM radio
signal. Listeners use the R863 receivers equipped with headsets to pickup the FM broadcast up to 400 feet away.
To avoid difculties, please read through these instructions as
you begin to use the system. Then save the manual for questions that arise as you continue to use your system. If at any
time you are having problems with this product, please contact
Williams Sound toll free for assistance: +1 952 943 2252.
Fi g. 1: Ov e r a l l Sy S t e m Di a g r a m
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se T T i n G u P T h e T800
Fi g.2:Fe a t u r e S &co n t r o l S
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2 3 54 6 7 8
1. Headphone Jack
2. Headphone Volume Control
3. Frequency Display (LCD)
4. Up Button
5. Down Button
6. Set Button
7. Menu Control
8. Power ON/OFF Control
10 12 1413
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9. Antenna Connector
10. RF Power Output Switch
11. Audio Input Jack, RCA Type
(Line-level, Unbalanced) with
Gain Control
• St e p 1:Se l e c t lo c a t i o n
Position the T800 transmitter near the audio source (i.e. sound
system, mixer) from which it will receive audio.
t e p 2:in S t a l l t h e an t e n n a
• S
Gently thread the antenna onto the stud recessed in the hole on
the back of the transmitter. To use a remote antenna, contact
your dealer or Williams Sound.
• S
t e p 3:co n n e c t t h e po w e r
Locate the power supply cord equipped with the 3-pin connector, then plug the connector into the “AC Power In” jack
located in the back of the T800. Plug the power supply into
the AC outlet. Press the “Power ON/OFF” control on the front
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12. Mic Input Jack, Combo 3-Pin XLR
or 1/4” TRS (Balanced/unbalanced)
with Gain Control
13. DC Power In Jack
14. AC Power In Jack
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of the unit. On power up, “Williams Sound T800” will appear
briey while the system initializes. The system will then display the current operating “CHANNEL” (1-16).
• St e p 4:Se l e c t t h e Fr e q u e n c y
The T800 operates on the 863-864 MHz bandwidth with sixteen selectable preset channels. Channels 1-3 are standard and
coincide with channels 1-3 on the R863 (optional) receiver:
CH 1 = 863.250 MHz, CH 2 = 863.750 MHz, CH 3 = 864.750 MHz
Non-standard operating channels (4-16) available are:
CH 4 = 863.050 MHz, CH 5 = 863.400 MHz, CH 6 = 863.550 MHz
CH 7 = 864.000 MHz, CH 8 = 864.150 MHz, CH 9 = 864.300 MHz
CH 10 = 864.450 MHz, CH 11 = 864.600 MHz, CH 12 = 864.950 MHz
CH 13 = 863.150 MHz, CH 14 = 863.650 MHz, CH 15 = 863.900 MHz,
CH 16 = 864.850 MHz
The T800 is set at the factory to Channel 1 (863.250 MHz).
To change the channel, press and hold the “Set” button for 3
seconds (cursor will ash), then press the “+” Up or “-” Down
button until the desired channel (1-16) is displayed. No further
action is required, the selection will be saved into memory
after 3 seconds.
To view the current operating frequency (i.e. “863.250 MHz”)
on the T800, press the “MENU” button once. To change the
operating frequency, press and hold the “Set” button for 3
seconds (cursor will ash), then press the “+” Up or “-” Down
button until the desired frequency is displayed. The selection
will be saved into memory after 3 seconds.
• St e p 5:co n n e c t t h e au d i o So u r c e
On the back of the T800, two audio input jacks are available:
an RCA-type jack for line-level, unbalanced audio sources;
and a combo XLR (3-pin) and 1/4” TRS jack for connecting
unbalanced/balanced audio sources. Connect the desired audio
source to the T800 transmitter and proceed to Step 6.
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• St e p 6:ad j u S t t h e a u d i o le v e l
Locate the “Gain Control” on the rear of the T800. With
the audio source playing, use a small screwdriver or tuning
wand to rotate the “Gain Control” clockwise “+” to increase
or counterclockwise “-” to decrease gain. Monitor the audio
indicator “bars” on the display as you make your adjustments.
As a general guideline:
No audio indicator bars present = Audio source is TOO LOW.
Some audio indicator bars present = Audio source is ACCEPTABLE
“Limiting” message is displayed = Audio source is TOO HIGH.
Ensure the audience is receiving the highest quality
audio: listen to the audio through the headphone
jack on the front of the T800 (FIG. 2).
• St e p 7:li S t e n w i t h a n FMre c e i v e r
IMPORTANT: The FM receiver being used with the T800
transmitter will need to be on the same frequency as the transmitter!
Install the receiver batteries, plug in the earphone, turn on the
receiver and walk around the listening area. The signal should
be clear and quite loud when the volume is turned up. See
page 9 for detailed operating instructions on the R863 receiver.
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