TeachLogic Forum User Manual
owner’s manual
Infrared Wireless Microphone System
Forum
owner’s manual
notes
Date of Purchase:
Model Number:
Serial Number:
Notes:
Forum
owner’s manual
thank you
Congratulations on the purchase of your new Forum
Infrared Wireless Microphone Sound System. You
can be assured that the Forum fulfills all
specifications and was produced to very high
quality control standards. TeachLogic incorporates
the latest state of the art technology, employs the
most advanced manufacturing methodology and
uses only premium quality components to assure
many years of reliable performance. We appreciate
your confidence by your selection of our product. It
is TeachLogic’s intent to uphold that confidence by
providing factory assistance and dealer support.
We hope you will take the time to view this manual
to familiarize yourself with the product operation
and features. This manual will help you learn to use
and gain the maximum benefit of the Forum
system. The manual provides a basic explanation on
the principles and advantages of infrared
transmission. Followed by the system description,
operation and installation instructions, the manual
will conclude with maintenance and troubleshooting
procedures.
contact
If you should encounter
some unresolved issue,
please contact TeachLogic
customer service department for further assistance.
Brian Van Waay
President
1•800•588• 0018
sales @teachlogic.com
1•760•631•1283
www.teachlogic.com
4
safety instructions
Read Instructions
All safety and operation instructions should be read
before operating this TeachLogic product.
Retain Instructions
Safety and operating instructions should be kept
for future reference.
certifications
US CA
Listed
TeachLogic systems are
manufactured using leadfree processes and are free
of materials harmful to the
environment. They conform
to the most stringent new
European guidelines for
consumer products (RoHS).
caution
Recycle—Do not dispose
rechargeable batteries in
trash. Actually it is unlawful
to do so in CA, NY & ME.
Contact: Earth911.com
1-800-CLEANUP
Save our resources and
don’t contaminate.
Go Green
Water & Moisture
This product should not be operated near water.
Heat Environment
Do not subject this product to excessive heat
conditions.
Power Source
This product must be connected to an AC power
source per the voltage input specified and marked
on the power supply.
Power Cord Caution
Power cable should be routed clear of foot traffic
and supported clear of kinking or abrasion.
Object Protection
Locate the operating unit so it will not be subjected
to falling objects or water entry.
Internal Service
User should not attempt to service this product.
All internal service must be accomplished by a
qualified technician.
Electric Shock
Do not adapt or modify the AC power plug thus
lifting the earth ground connection.
Forum
owner’s manual
-9
table of contents
About Infrared ............................................................
Product Description ...................................................
Forum System Description IMA-320 ........................
Sapphire Microphone/Transmitters IRT-55 .............
Handheld Microphone/Transmitter IRH-35 .............
Drop-in Chargers BRC-55/Ceiling Sensor ICS-55 ...
Installation of Ceiling Sensor .....................................
Instalation of Wall and Ceiling Speakers ..................
System Wiring ............................................................
Operation of Wireless Microphone .........................
Troubleshooting ..........................................................
transmitter
1
2
3
4
5
6
7
8-9
10-11
12
13
General Specifications ...............................................
Microphone Specifications ........................................
Five Year Limited Warranty .......................................
14
15
16
6
IR transmission
The IR transmitter
transmits directly to the
sensor. However; due to
the strength of the IR
transmitter, the infrared
signal will bounce off the
walls, ceiling and floor for
reception thus providing
continuous connectivity
throughout the room.
Benefit: total freedom
of movement within the
room with no restriction
of orientation.
“What’s said in
the room, stays in
the room”.
Infrared will not
penetrate a solid surface
thus preventing any
transmission from
going out of the room.
a brief word about infrared
Infrared is a light ray that is below the visible
spectrum, just like the sound spectrum extends
beyond your hearing ability. An example of infrared
transmission is the remote control for your TV set.
When a button is pressed, a beam of infrared light
is emitted by a Light Emitting Diode (LED) from the
remote control. It is detected by a receiving diode
in your TV set. When you press a certain command
on your control, the internal electronics cause the
infrared light to flicker in a programmed sequential
pattern (called modulating the light beam). The
modulated infrared beam is detected by the
receiving diode and is electronically decoded. The
decoded signal activates the circuitry to perform
the command function on your TV set.
So how does t his apply to the inf rared commu nication
system you are about to start using? The
microphone/transmitter has several Light Emitting
Diodes (LED) that emit infrared light beams to the
sensor located in the corner of the room. Now
when you talk into the microphone, the microphone
element modulates the light beam, causing it to
flicker in sync with your speech. The sensor detects
the sequential signal and the electronic circuitry in
the Forum converts that sequential signal into a line
level analog audio signal. Now that audio signal can
be fed into an amplifier. The amplifier magnifies
the electronic signal and sends it to the speakers.
This causes the speaker cone to move in sync with
your voice. The speaker replicates your voice and
disperses your voice evenly throughout the room.
1
Forum
owner’s manual
product description
The Forum is an infrared wireless microphone
sound system. It is the nucleus of the classroom
sound field system which provides optimum voice
reinforcement.
The addition of a Forum sound field system will
transform your classroom into a totally hands free,
voice re-enforcement system, resulting in reduced
voice fatigue, enhanced student listening and
improved student learning. The wireless function
permit s 360° connec tivity throughout the classroom
regardless of body position or orientation.
The system is comprised of an infrared detecting
sensor(s) installed in the ceiling. The sensor
collects the IR wireless signal from the microphone/
transmitter and sends a composite signal to
the mixer/amplifier. The receiver transforms the
composite signal into an analog audio signal
which is fed to the Forum mixer. Two other audio
sources, such as; computer, DVD, VCR or Projector
can be plugged in to the Forum. The volume level
of each input will be controlled by the individual
volume control of each input. The audio will then
be fed to the speakers in the room for even voice
reinforcement throughout the room.
On the front panel of the Forum, there are two
3.5mm output jacks for interface with an assistive
listening system (ALS) and lesson capture (REC).
The microphone / transmitter can be one or two
Sapphires Pendant or a Handheld and a Sapphire
Pendant. The rechargeable batteries will provide
6 – 8 hours of service per charge. The drop-in
charger will recharge the batteries overnight, ready
for another day’s use.
2
Reliable
performance.
Use with
confidence.
2
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