Touchboards TeachLogic VoiceLink Plus User manual

owner’s manual
Infrared Wireless Microphone System
VoiceLink

owner’s manual
VoiceLink

notes
Date of Purchase:
Model Number:
Serial Number:
Notes:

contact
thank you
If you should encounter
some unresolved issue,
please contact TeachLogic
customer service depart-
ment for further assistance.
4
owner’s manual
Congratulations on the purchase of your new Voic-
eLink PLUS Infrared Wireless Microphone Sound
System. You can be assured that the VoiceLink
PLUS fulfills all specifications and was produced
to very high quality control standards. TeachLogic
incorporates the latest state of the art technol-
ogy, employs the most advanced manufacturing
methodology and uses only premium quality com-
ponents to assure many years of reliable perfor-
mance. 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 Voic-
eLink PLUS system. The manual provides a basic
explanation on the principles and advantages of
infrared transmission. Following by the system
description, operation and installation instruc-
tions, the manual will conclude with maintenance
and troubleshooting procedures.
Brian Van Waay
President
1•800•588•0018
[e-mail]
1•760•631•1283
www.teachlogic.com
VoiceLink

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.
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.
certifications
Listed
US CA
TeachLogic systems are
manufactured using lead-
free processes and are free
of materials harmful to the
environment. They conform
to the most stringent new
European guidelines for
consumer products (RoHS).
Recycle—Do not dispose
of 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
caution

transmitter
table of contents
About Infrared..............................................................
Product Description.....................................................
VoiceLink Plus Components......................................
Corner Sensor...............................................................
Microphone/Transmitters....................................
Drop-in Battery Chargers.........................................
Installation of Receiver/Amplifier............................
Installation of Speakers.......................................
Installation of Sensor...................................................
System Operation........................................................
Troubleshooting...........................................................
Specifications.........................................................
Five Year Limited Warranty.......................................
1
2
3
4
5–9
10
11
12–13
14
15
16
17–18
19
6
owner’s manual
VoiceLink

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 infra-
red 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 receiv-
ing 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 a receiving diode and is electronically decoded.
The decoded signal activates the circuitry to per-
form the command function on your TV set.
So how does this apply to the infrared communi-
cation 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 micro-
phone 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 VoiceLink PLUS converts that se-
quential 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 output 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
IR transmission
The microphone/trans-
mitter transmits the voice
directly to the sensor
via an infrared signal.
Although infrared light is
straight line directional,
the signal is transmitted in
a special pattern and can
bounce off solid surfaces.
Thus, continuous connec-
tivity is assured through-
out the room.
Benefit: total freedom
of movement within the
room with no restriction
of orientation.
Infrared will not
penetrate a solid surface
thus preventing any
transmission going
out of the room.
“What’s said in
the room, stays in
the room”

2
owner’s manual
2
product description
The VoiceLink PLUS is a complete classroom sound
system. It includes an infrared wireless micro-
phone/transmitter receiver and a 20 watt power
amplifier. A corner sensor senses the infrared
signal emitted from the microphone/transmitter
and sends the voice signal to the receiver. The
receiver can also accept an input from another au-
dio source such as an iPod™, Computer, DVD, or
video projector. The receiver passes the composite
signal to the power amplifier which drives the two
speakers. In addition, a drop-in charger is included
to recharge the transmitter battery for daily use.
Reliable
Performance.
Use with
confidence.
VoiceLink

SPEAKER OUTPUT SENSOR INPUTS DC IN: 12V
POWER
CH A AUX IN
3
front of IMA-100 receiver/mixer
back of IMA-100 receiver/mixer
Power LED (Red)
Power Button (Black)
Microphone Volume Control
Microphone Transmission Indicator
LED (Orange)
Two Amplifier Outputs (10 Watts ea.) (Dual 2-pin Phoenix Connector)
Two Sensor Inputs (RCA)
Power Input: 12VDC
Auxiliary Input (3.5mm)
Auxiliary Volume Control
Auxiliary Signal Present Indicator
LED (Orange)
1
2
3
4
5
6
7
1
2
3
7654321
321
VoiceLink plus system
The VoiceLink PLUS system is comprised of a
microphone/transmitter, either the Crescent (IRT-
30), the Pendant (IRT-89), or a Body-Pack with an
external microphone (IRB-30) for voice transmis-
sion to a corner sensor (IWS-30). The sensor sends
the signal to the receiver/mixer (IMA-100). The
receiver processes the signal and produces an
analog signal which is fed to the power amplifier.
The output of the amplifier is fed to the speakers
(SP-628 or SP-2000).

2
owner’s manual
4
IWS-30 corner sensor
30'cable
The Sensor is the component that receives the
infrared transmission from the microphone/trans-
mitter and sends the signal to the receiver via a
dual shielded cable. The sensor has 15 receiv-
ing diodes providing 90° conical reception from
the front. It is designed for mounting in a corner
near the ceiling. Its interconnect is a short cable
with a female RCA connector. The sensor can
be installed on a wall with satisfactory perfor-
mance., but many have some disconnectivity
at extreme off-axis reception. An additional
sensor can be installed for broader coverage
or as a supplement to cover a remote area.
A Cable (30') connects the sensor to the receiver.
The cable is dual-shielded with a male RCA con-
nector on each end and is plenum rated.
Green light indicates that the sensor is receiving power
from the receiver.
power “on” LED
VoiceLink

5
infrared microphone/transmitters
The infrared microphone/transmitter is comprised of a microphone input, signal processing
circuits and several emitting diodes that transmit the vocal signal to the sensor.
The microphone/transmitter can be the Crescent or Pendant style worn around neck, or
Body-Pack clipped to your waist with your choice of microphone (Lapel, Collar, or Head-
band). The rechargeable batteries will provide 6–8 hours of service per charge. Place the
microphone/transmitter in the charger for overnight charge and it will be ready for another
day’s use.
The drop-in battery chargers are specifically designed to recharge NiMH batteries at an opti-
mum rate for maximum operating capacity and extended service life. Charger will automati-
cally start charging the batteries upon insertion and will shift to a maintenance charge when
batteries are fully charged.
The Crescent is a lightweight microphone/
transmitter designed to be worn under the chin
suspended by an adjustable lanyard. The Crescent
shape was designed for efficient performance
and user comfort. The dual internal microphones
render optimum voice pick up and quality vocal
reproduction. The Crescent provides an auxiliary
input (3.5mm) to accommodate the insertion of
an iPod™or similar device for supplementary
program material.
A soft touch mute button cuts the microphone
“off” for private conversation (the power LED
will flash in the mute position). A volume control
allows adjustment of the microphone volume.
The external battery contacts accommodate the
convenient use of a drop-in charger.
features
•Snap-in lanyard attachment
(Breakaway Safety)
•Push “on/off” power button
•Battery level indicator
•Useable charge–Green LED
•Recharge needed–Red LED
•Push “on/off” mute button
(Blinking LED)
•Powerful infrared transmis-
sion output
•Dual internal microphones
•Auxiliary input jack:
(Switchable to Mic or Line
Level)
•Channel “A” or “B” Selector
switch
•Volume Control
•Single “AA” rechargeable
NiMH battery
•External contacts for drop-
in charger
(IRT-30) crescent transmitter

owner’s manual
4
IRT-89 pendant transmitter
LM-300 plug-in microphone capsule
The Pendant Transmitter (IRT-89) is a complete
self-contained unit with a built-in microphone. It
is worn around the neck, suspended by an adjust-
able lanyard to position for optimum performance
and comfort. The transmitter is easily unclipped
from the lanyard for handheld use and student
participation. Ten transmitting diodes assure
continuous connectivity. A volume control allows
remote adjustment of the microphone volume. An
external mic input (top/center) permits insertion of
a unidirectional microphone for enhanced perfor-
mance and anti-feedback. The external battery
contacts accommodate the convenient use of a
drop-in charger.
Although the built-in microphone provides satis-
factory performance, the optional plug-in micro-
phone is a unidirectional microphone thus repro-
ducing better vocal quality and rendering more
gain (more volume before feedback). With the
windscreen, the pendant can be used as a hand-
held microphone without breath pops.
features
•Excellent performance
•Quality vocal reproduction
•Conducive to handheld use
•Power “on/off ” switch on
front panel
•Battery level indicator,
LED: Green–useable
charge; Red–needs
recharging
•Channel selector switch:
Ch. “A” or “B”
•Volume Control
•External microphone in-
put: Top center (3.5mm)
•Rechargeable batteries:
Two “AA” NiMH
•External battery contacts
for drop-in charger
•Dimensions: 5.25"H x
1.5"W x 1"D
•Weight: 4.8 oz. with
batteries
6
VoiceLink

7
IRB-30 body-pack transmitter
The Body-Pack Transmitter (IRB-30) is usually worn
on the waistband with an external microphone
plugged in, i.e., Lapel (LM-835), Collar (CM-835)
or Headband (HBM-935). Or with a lanyard and a
Plug-in microphone capsule (LM-300) plugged into
the top, it can be worn as a pendant microphone/
transmitter. Ten transmitting diodes provide 180°
spherical transmission, assuring optimum connec-
tivity. A volume control allows remote adjustment
of the microphone volume. The external battery
contacts accommodate the convenient use of a
drop-in charger.
features
•Power ON/OFF switch on
side with LED indicator
•Battery level indicator:
Green—useable charge;
Red—needs recharging
•Channel selector switch:
Ch. “A” or “B”
•Power output switch:
Hi/Lo (located inside bat-
tery compartment)
•Volume Control
•External microphone in-
put: Top center (3.5mm)
•Rechargeable batteries:
Two “AA” NiMH
•External battery contacts
for drop-in charger
•Dimensions: 4.75"H x
2.75"W x 0.75"D
•Weight: 4.8 oz. with bat-
teries
It is imperative that the
transmission window not
be covered or obstructed
from transmitting to the
sensor. Do not place in
pocket.
note

owner’s manual
8
optional microphones for body-pack transmitter
LM-835 lapel microphone
HBM-935 headband microphone
CM-835 collar microphone
The Lapel Microphone (LM-835) is a small capsule
microphone with a spring clip for securing it on to
a clothing edge. The lapel microphone renders ex-
cellent vocal reproduction. The lapel microphone
is less obtrusive to the user and least visible.
However, due to the greater distance from mouth
to microphone it will require additional gain. As a
result it is more prone to feedback. So adjustment
of volume is more critical, especially near or under
a speaker.
The Headband Microphone (HBM-935) is worn
around the head with a unidirectional microphone
located on the end of a flexible boom. This is the
best performing microphone due to its unidirec-
tional mic element and its always close proximity
to the mouth. The microphone also renders maxi-
mum gain and is least prone to feedback.
The Collar Microphone (CM-835) is a flexible rod
that can be formed to fit around the neck. The end
with the microphone is then contoured up toward
the mouth. The cord exits the flexible rod from
the back, out of the way. The collar microphone
utilizes a unidirectional element for excellent voice
reproduction and minimizes feedback.
Any of the microphones below may be used with the Body-Pack Transmitter.
VoiceLink

9
ULM-835 ultra-lite microphone
LM-300 plug-in microphone
The Ultra-Lite Microphone (ULM-835) is a minia-
ture boom style microphone supported by a wire
around the left ear. The unidirectional microphone
element renders excellent vocal quality and
maximum clarity. Its lightweight and miniature size
make it comfortable and inconspicuous. It is avail-
able in either beige or black.
The Plug-in Microphone (LM-300) is a small
capsule size microphone that plugs directly into
the top of the Body-Pack or pendant transmitter.
An adjustable lanyard is included to accommo-
date wearing the Body-Pack around the neck as a
pendant style microphone. The Body-Pack is easily
removed from the lanyard to facilitate use as a
handheld microphone.
The boom can be formed to fit but it is not considered to
be flexible.
So it cannot be bent back and forth; IT WILL BREAK!
caution

owner’s manual
10
drop-in battery chargers
BRC-50
BRC-40
BRC-101
The BRC-50 charger recharges the Crescent
(IRT-30) and Body-Pack transmitter (IRB-30). You
merely place the Crescent or Body-Pack in their
respective slot. Connection will be made and
charging will commence. Charger will automatically
control the rate and maintain the charge.
The BRC-40 charger recharges the (IRB-30) Body-
Pack transmitter and (IRH-30N) Handheld trans-
mitter. You merely place the Body-Pack and/or
Handheld in their respective slots. Upon insertion
connection will be made and charging will com-
mence. Charger will automatically control the rate
and maintain the charge.
The BRC-101 drop-in charger is for the Pendant
transmitter (IRT-89). The single slot (BRC-101) can
also charge a pair of “AA” batteries in the tray.
Charger will automatically control the rate and
maintain the charge.
The battery chargers are specifically designed to recharge NiMH batteries at an optimum
rate for maximum operating capacity and extended service life. The chargers feature a recy-
cle function, which is used to restore the battery charge capacity and extend their service life.
VoiceLink

11
installation of receiver/amplifier
Location of the receiver/amplifier is primarily determined by user accessibility, availabil-
ity of an electrical outlet, location of the auxiliary input source, and routing of the sensor
and speaker cables. The receiver/amplifier can be placed on desk top, mounted on the wall,
mounted on top or under a shelf using the mounting flanges and hardware provided.
mounting receiver/amplifier
Desk Top Location
•Install soft vinyl pads on bottom of receiver
•Locate for convenient use
Shelf or Wall Mount
•Attach the mounting flanges using round holes
and small plastic rivets.
Caution: Assure rivets are aligned and seated
before pushing rivet into hole
•With flanges attached, hold receiver in place.
•Mark mounting holes
•Drill a 3/32" pilot hole for screwing directly into a
solid surface using the mounting screws.
•Drill a 5/32" hole and insert a plastic anchor in
drywall or concrete wall.

owner’s manual
12
installing two SP-628 ceiling speakers
•Determine the listening area.
•Divide listening area into two quadrants
•Locate and identify the center most tile in each
quadrant
•Lay ceiling tile face down on clean flat surface
•Lay tile bridge on ceiling tile and center it
•Trace and cut the large hole using a keyhole or
drywall saw
•Strip the speaker cable ends, approx. ½"
•Route speaker wire from speaker opening to
amplifier
•Reinstall ceiling tile with tile bridge in place
above the hole
•Pull speaker cable back down through speaker
hole
•With a pointed tool or paper clip, lift up and
remove speaker grille
•Set speaker on top of ladder and connect speaker
cable connect
•Observe speaker polarity, connect Red wire to (+)
terminal and other wire to the (C) terminal
•With the mounting clamps folded back, position
speaker into speaker hole
•With a #2 Phillips screwdriver, tighten the quick
clamps
•Reinstall speaker grille and remove any soil or
fingerprints
•Repeat same for other speaker
continued on next page
installation of speakers
Two wall mount or ceiling speakers can be powered by the receiver/amplifier. It has two
amplifiers (10 watts ea.). One speaker will be connected to each amplifier.
Optional: Two additional speakers can be powered by the amplifier. Connect two speak-
ers in parallel. Then bring a cable from each pair to the amplifier. Connect one pair to each
amplifier.
VoiceLink
Optional:
Two Additional Speakers
Wall Sensor
Listening Area
Front of Room
Ceiling Speakers

Optional:
Two Additional Speakers
13
installing SP-2000 wall mount speakers
•First observe the shape of the room: ceiling
height, door locations, windows, mounting sur-
face, and seating area
•Ordinary installation would be to locate the
speakers on each side wall approximately even
with the front row of listeners
•Mount the speakers 6–7 feet above the floor
•Install the mounting brackets in the vertical (up/
down) orientation
•Mount brackets using the appropriate hardware
•Insert speaker with the tweeter in upper position
•Secure speaker in bracket with the hand fasteners
•Orient each speaker toward the center of that
half of the listening area
•Strip speaker cable ends ½” and connect to
speaker
•Observe speaker polarity: Connect (+) wire
(with printed writing) to (+) terminal and (-) wire
(unprinted & textured) to the (-) terminal
•Route speaker cable to the receiver/amplifier in a
safe, least visible, tidy manner
final connection of the system
With receiver/amplifier located, speaker and sensor
cables neatly routed, we are ready to complete the
installation.
•Cut the speaker wire to the appropriate length
•Strip about 3/8” off the end of each speaker
wire.
•Twist the wire and if you have a soldering iron,
tin the wire ends
•Unplug the phoenix connector, insert (+) wire
(with printed writing) into either outside (+)
terminal. Plug the other (-) wire into center (-).
•Tighten set screws.
•Repeat for other pair and insert plug firmly into
speaker receptacle
•Plug power supply into AC outlet

owner’s manual
14
corner mounting
wall mounting
installation of IWS-30 corner sensor
•Reshape the bracket so when screwed to the
wall, the sensor will be diagonally across the
corner
•Locate sensor near ceiling, within 12 inches is
preferred
•Slide sensor onto bracket in most appropriate
position for routing sensor cable
•Connect sensor cable and route in tidy manner
to receiver
•Plug into either sensor input on receiver
•Locate sensor bracket on front or side wall, pref-
erably side wall near ceiling
•Slide sensor onto bracket in most appropriate
position for routing sensor cable
•Connect sensor cable and route in tidy manner
to receiver
•Plug into either sensor input on receiver
Bracket bent out and
oriented sideways.
corner install
front wall install
The corner sensor is a critical component of the system for reliable operation of the wireless
transmitter. It receives the infrared signal and sends it to the receiver/amplifier. Its location
is very important. Corner installation provides the best performance. The receiving pattern
is spherical shaped about 90º. By mounting in the corner, the infrared transmission can
bounce off the walls and ceiling giving a reflective funnel effect.
Bracket oriented
downward
VoiceLink
For large or odd shaped rooms, an additional sensor can
be added to the system for additional wireless transmis-
sion coverage.
optional