Lightspeed Redcat media User manual

LightSPEED
Classroom Amplification System
User Manual
LightSPEED Technologies, Inc.
11509 SW Herman Rd
Tualatin, OR 97062
800.732.8999
www.lightspeed-tek.com
TM

USER NOTES SAFETY INSTRUCTIONS
1.Read Instructions—All the safety
and operation instructions should
be read before this LightSPEED
product is operated.
2. Retain Instructions—The safety and
operating instructions should be
kept for future reference.
3.Heed Warning—All warnings on
this LightSPEED product and in
these instructions should be
followed.
4.Follow Instructions—All operating
and other instructions should be
followed.
5. Water and Moisture—This Light-
SPEED product should not be used
near water.
6. Heat—This LightSPEED product
should be situated away from heat
sources such as radiators, etc.
7. Power Sources—This LightSPEED
product should be connected to a
power supply only of the type
described in these operation
instructions or as marked on this
LightSPEED product.
8. Power Cord Protection—Power supply
cords should be routed so that
they are not likely to be walked upon
or pinched by items placed upon or
against them.
9. Object and Liquid Entry—Care should
be taken so that objects do not fall
onto and liquids are not spilled into
the inside of this LightSPEED product.
0. Damage Requiring Service—This
LightSPEED product should be
serviced only by qualified service
personnel. The user should not
attempt to service this LightSPEED
product.
1. Prevent Electric Shock—do not use
this polarized plug with an extension
cord, receptacle or other outlet
unless the blades can be fully
inserted to prevent blade exposure.
CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER (OR BACK)
NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL
The lightning flash with arrowhead symbol
within an equilateral triangle is intended to alert
the user to the presence of uninsulated “danger-
ous voltage” within the product’s enclosure, that
may be sufficient magnitude to constitute a risk
of electric shock.
The exclamation point within an equilateral
triangle is intended to alert the user to the pres-
ence of important operating and maintenance
(servicing) instructions in the literature accom-
panying the appliance.
1
1
21 | REDCAT User Manual
REDCAT User ManualREDCAT User Manual
REDCAT User Manual | i

LT-7 1
LT-7 1
CH B
CH A
POWER
LT-71
REDCAT User Manual | 20
REDCAT User ManualREDCAT User Manual
TURN ON THE REDCAT
Unplug the LightMic from the charger
and place it around your neck. Adjust
the neck strap so the top of the
microphone rests just below your
collarbone.
POSITION THE LIGHTMIC
DAILY USE INSTRUCTIONS
ii | REDCAT User Manual
A CH B OFF ON
TURN ON THE LIGHTMIC
CHARGE BATTERIES
Turn the microphone ON using the
switch ON/OFF switch on the side of
the LightMic and speak normally.
Recharge the LightMic at the end of
each day by plugging it back into the
charger.
Flip the POWER switch on the side of the REDCAT
to the ON position, the LED will glow.
USER NOTES

REDCAT CLASSROOM AMPLIFICATION SYSTEM
TABLE OF CONTENTS
Safety Instructions
Daily Use Instructions
REDCAT Classroom Amplification System
System Components
Setting up the REDCAT
Unpacking Your System
Determine Set-up Method
Selecting a Location for the REDCAT (Tabletop Setup)
Selecting a Location for the REDCAT (Wall Setup)
Side Panel Controls
Rear and Bottom Panel Controls
LightMic Controls and Connections
System Operation: Turning the System On
Charging the LightMic
Using the LightMic to Amplify External Audio Equipment
Direct Input from External Audio Equipment
Output to Personal FM Transmitter
Operating the Optional HM-70 Handheld Mic
Charging the HM-70 Handheld Mic
Tips on Classroom Amplification/Warranty Statement
Troubleshooting Guide
System Specification
Individual Components and Optional Accessories
User Notes
User Notes
User Notes
19 | REDCAT User Manual
REDCAT User ManualREDCAT User Manual
8
9
10
11
12
13
14
15
16
17
18
19
20
21
i
USER NOTES
Record your system serial numbers and
purchase information. This is helpful
when ordering additional components,
accessories, and/or warranty service.
Components
REDCAT
Serial Number
Microphones
Purchase Information
Your School/Organization
District
Purchase Date
Invoices
Charger
7
6
5
4
3
3
3
3-4
2
1
ii

LightSPEED
1 | REDCAT User Manual REDCAT User Manual | 18
REDCAT User Manual REDCAT User Manual
REDCAT Receiver/Amplifier
(Optional) HM-70
Handheld Microphone
Congratulations on your purchase
of the REDCAT™ Classroom Amplifica-
tion System! This simple, yet power-
ful technology provides crystal-clear
sound throughout the classroom,
allowing every child to hear every
word every time.
As the teacher speaks into the
LightMic pendant-style transmitter,
his or her voice is transmitted to the
REDCAT and then amplified through
the loudspeaker(s). The standard
system includes the REDCAT™ infrared
receiver/amplifier, LT-71 LightMic™
transmitter and speaker package.
The REDCAT is a two-channel receiver
amplifier that allows the use of up to
two microphones simultaneously and
an additional audio input source (such
as TV, VCR, DVD, CD, MP3, etc.).
The LT-71 LightMic is a wireless, pen-
dant-style transmitter. This two-chan-
nel, rechargeable unit is clipped to a
lavaliere cord and worn around the
neck for the teacher to use or can be
used like a standard handheld micro-
phone for the students to pass around
when speaking.
LT- 71
LT-71™
LightMic
Transmitter
REDCAT™ CLASSROOM AMPLIFICATION SYSTEM
Part Number Description
REDCAT
LT71
HM70
BA-NH1
BC-TXLT
AC-LTCB
PS-24V-2.5
MC-TK250LTM
CA-RCA6
CA-RCA24
CA-MMC3535
CA-MMC2435
Infrared receiver/amplifier/mixer w/built-in charger
LightMic rechargeable microphone/transmitter
w/lavaliere cord, batteries and charging cable
Handheld microphone/transmitter w/ batteries and
charging cable
Rechargeable AA battery (Nickel Metal Hydride)
Wall Charger (charges two LT-71 LightMics)
Lavaliere cord for LT-71
Power supply/battery charger for 850iR
Noise-canceling headset microphone to be used
with LT-71
6’ dual RCA audio cable
24’ dual RCA audio cable
3.5 mm mono to 3.5 mm mono audio cable
Audio patch cable (2.5 mm mono to 3.5 mm mono)
INDIVIDUAL COMPONENTS & OPTIONAL ACCESSORIES
AC-71CC Cradle Charger (charges two LT-71 LightMics)
Part Number Description

REDCAT User Manual | 2
17 | REDCAT User Manual
REDCAT User ManualREDCAT User Manual
LT-7 1
REDCAT™ Infrared Receiver/Amplifier w/Table Stand
LT-71 LightMic™
Transmitter
Wall Charger
Optional HM-70 Handheld Microphone
Helpful
Hint:
SYSTEM COMPONENTS
Keep ALL packaging materials. If the system
must be returned, it will be quick, convenient
and undamaged.
LightSPEED
Power Supply
Optional Wall Bracket
Power Output 15 W
Amplifier Frequency Response 100 Hz to 20 kHz ±3 dB
Carrier Frequencies (IR) 2.06/2.54
Signal-to-Noise Ratio > 73 dB
Dynamic Range > 73 dB
Maximum Deviation ±50 dB
Receiver Type Superheterodyne
Receiver Sensitivity 6 µV for 60 dB S/N
Image and Spurious Rejection > 70 dB
Dimensions (W x D x H) 22” x 3.25” x 10.5”
Weight 7 lbs.
Audio Distortion < 1 %
Built-in Microphone Uni-directional Electret
Battery Power (1-year warranty) 2 AA NiMH Rechargeable
Inputs Mic Level 3.5 mm
Line Level 3.5 mm
Dimensions (W x D x H) 1.375” x .75” x 4.625”
Weight 3.7 oz
SYSTEM SPECIFICATIONS
OVERALL SPECIFICATIONS
RECEIVER SPECIFICATIONS
TRANSMITTER SPECIFICATIONS

SETTING UP THE REDCAT
LightSPEED
1. Set it up. Find a flat surface and
keep in mind the following:
• Power Source
Within 7 feet of an electrical outlet
• Proximity
BEST: Along the wall in the back of
the classroom
GOOD: Along either side of the
wall or in a corner
AVOID: Locations next to where
the teacher instructs (can
result in feedback)
• Height
3–6 feet high
2. Plug it in
Uncoil the power cable and plug it
into an electrical outlet.
3. Turn it on
Flip the power switch on and
proceed to page 8 for system
operation instructions.
Tabletop Set-up
UNPACKING YOUR SYSTEM DETERMINE SET-UP METHOD
The REDCAT is shipped with a table
stand connected and ready for use. A
wall bracket is also included.
Advantages of either include:
Tabletop (recommended):
• Virtually no setup time
• Greater flexibility to move to
different locations
Wall-mount:
• More permanent setup
• Greater security
Ensure that you have received all of
the components of your system.
• REDCAT™receiver/amplifier and
power supply
• LT-71 LightMic™ transmitter
• BC-TXLT transmitter wall charger
• Tabletop stand (attached to the
REDCAT) and wall-mount bracket
• Optional: second LightMic or
IR handheld microphone
3 | REDCAT Users Manual REDCAT Users Manual | 16
REDCAT User Manual REDCAT User Manual
SELECTING A LOCATION FOR THE REDCAT
TROUBLESHOOTING GUIDE
Battery Check
• Confirm batteries are charged
each night.
• Make sure the LT-71 is turned off
while charging so that it will attain
a full charge. Full charge will last
eight hours.
• Make sure the charge cord is
connected to the cradle charger.
• Inspect the battery contacts. Clean
and adjust if necessary.
Hearing Static
• Ensure the REDCAT is in an
acceptable location and the line of
site to the IR sensors is not impeded
(refer to placement in manual). A
single sensor will cover a 1600 sq. ft.
enclosed classroom.
• Ensure that no other LT71/HM70 is
operating on the same channel.
• If an external microphone is in use,
try a another LightMic that is known
to be working (if available) to isolate
the problem. If static persists with
“known good” microphone, the
LT-71 input jack has damage and
will need service.
Low Volume or Feedback:
• Ensure microphone is positioned
appropriately, just below the collar
bone. If a headset microphone is in
use, the end of the mic boom
should be positioned at the corner
of the mouth.
• Check volume level on the REDCAT.
If the volume is too high, feedback
WILL occur. Adjust accordingly.
No Sound From Speaker
• Turn the REDCAT on. Confirm that
the POWER light located on the
front panel switch is on.
• Confirm signal is being received
at the REDCAT. The IR signal
light will be lit (red) indicating a
signal is being received.
If you review these instructions and still have questions, write down the serial
number and model number of your system and call LightSPEED Technical Services
at 800.732.8999, 6:30 a.m. – 5 p.m. PST.
Note: Most problems are directly related to low battery power. Please
run through the “Battery Check” items first. For remaining trouble-
shooting, use known good, fully-charged batteries.

REDCAT User Manual | 4
15 | REDCAT User Manual
REDCAT User ManualREDCAT User Manual
EQUALIZER
250 400 600 1K 1K6 2K5 6K3
4K
+10
0
-10
DC IN
24VDC
+–
1. Select a location. Identify an open
area on the wall with the following
characteristics:
• Power Source
Within 7 feet of an electrical outlet
• Proximity
BEST: Centered on the long wall in
the back of the classroom
GOOD: On the wall on either side
of the classroom
AVOID: Locations right next to
where the teacher
instructs (can result
in feedback)
• Height
6–8 feet high
SETTING UP THE REDCAT
LightSPEED
If the walls are drywall:
• Drill a pilot and then screw in the
sheet rock mollies until they are
flush with the surface.
• Hold the bracket back up to the
wall and, using the screws pro-
vided; tightly secure the bracket to
the wall.
If the wall are wood:
• Screw the mounting bracket to the
wall with the two mounting screws
at the market spaces. Tighten the
screws so that the bracket hangs
snug to the wall.
• Hang the REDCAT onto the
bracket so that both ears slide into
the slots on the back of the RED-
CAT. Make sure to route the power
cord down the wall, behind the
REDCAT so that it can be plugged
into the nearby electrical outlet.
• Secure the RECAT to the bracket
using the two screws provided.
3. Plug it in. Plug the power cable into
an electrical outlet or extension
cord.
4. Turn it on. Flip the power switch
on and proceed to page 8 for
system operation instruction.
2. Hang it on the wall
• Remove the table stand from the
REDCAT by unscrewing the two
screws on the bottom of the unit.
• Locate the wall bracket
• Using a level, hold the bracket up to
the wall in the location selected and
use a pencil to mark screw holes.
Bracket Slots
Wall Bracket
REDCAT (rear view)
Wall Bracket
Speak in a natural voice. A normal conversational speech level
will provide an adequate signal. It is not necessary to increase
the intensity of your voice—the amplification system provides
adequate amplification (approximately 5 – 10 dB) above
ambient room noises.
LightSPEED Classroom Amplification Systems are guaranteed against malfunction due to
defects in materials and workmanship for a period of FIVE (5) YEARS, beginning at the date
of the purchase invoice. If such malfunction occurs, the product will be repaired or replaced
(at LightSPEED’s option) without charge during the period and under the limitations stipulated
in the data sheet or the user’s manual.
1. Limited exclusions specifically apply to all microphone elements, rechargeable
batteries, battery chargers and their assemblies, also external cables and wires.
2. Warranty on microphones/microphone elements is limited to original manufacturer’s
warranty (usually ONE (1) YEAR).
3. Warranty on LightSPEED NiMH AA rechargeable batteries is ONE (1) YEAR.
3. Warranty on LightMic’s internal microphone is FIVE (5) YEARS.
4. Prepaid shipping label provided by LightSPEED factory or an authorized warranty
service center.
5. Warranty does not extend to finish, appearance items, or malfunctions due to abuse or
operation other than specified conditions, nor does it extend to incidental or consequential
damages. Repair by other than LightSPEED or its authorized service agencies will void this
guarantee. Information on authorized service agencies is available from LightSPEED
Technologies, Inc.
TIPS ON CLASSROOM AMPLIFICATION
Avoid wearing jewelry that may rub or bump against
the microphone.
Turn the LightMic off during private conversations with a student,
parent, or other classroom visitor. You can also cover the LED
lens on top of the LightMic to block the signal.
Recharge batteries each night. When recharged nightly, operating
time (actual usage) for the transmitters will last through a typical
school day.
Our Service Department (800.732.8999, 6:30 a.m. – 5 p.m.,
PST) will handle all your repair/replacement needs.
1
2
3
4
Five-year limited warranty
Wall Set-up

5 | REDCAT User Manual REDCAT User Manual | 14
REDCAT User Manual REDCAT User Manual
CH B
CH A
POWER
LightSPEED
SIDE PANEL CONTROLS
1. POWER Switch/POWER Indicator:
This switch is used to turn the
REDCAT ON (switch up), or OFF
(switch down). When the POWER
switch is in the ON position, the
POWER light will glow red.
2. A VOLUME: Controls the volume
level of the teacher microphone
that is switched to Channel A.
Rotating the knob clockwise
increases volume level.
3. B VOLUME: Controls the volume
level of a second microphone
that is switched to Channel B.
Rotating the knob clockwise
increases volume level.
4. IR Indicators (IR): These lights will
glow red when the corresponding
microphone is turned on. This light
confirms the REDCAT is receiving a
steady infrared signal.
1
2
3
4
CHARGING THE HM-70 HANDHELD MIC
1. Ensure the HM-70 handheld
microphone is turned OFF (ON/OFF
switch on the side of the unit).
2. Make sure the wall charger is
plugged into an electrical outlet.
Connect one of the charging plugs
into the jack labeled CHARGER on
the side of the HM-70. The HM-70’s
rechargeable batteries are factory
installed.
3. The power indicator light next to
the power switch glows green when
the cable is connected and charg-
ing correctly. The light goes out
when fully charged. Batteries
will charge in 8 to 12 hours. A fully
charged battery will run for up to 8
hours of continuous operation.
All LightSPEED microphone transmitters can
remain charging for up to 10 days. Overcharg-
ing will not create a hazard, but will shorten
battery life.
Helpful
Hint:

REDCAT User Manual | 6
13 | REDCAT User Manual
REDCAT User ManualREDCAT User Manual
1. DC INPUT: Plug the 24 V power
supply into this jack.
2. POWER SUPPLY: Plug the 24 V power
supply into an AC outlet.
3. 8-BAND GRAPHIC EQUALIZER: The
sliding controls adjust the levels of
the various audio frequencies. This
allows the installer to properly
equalize the system to produce
optimum sound quality.
4. AUX INPUT AND ADJ: This
mono RCA jack accepts input from
various audio devices like TV,
CD/DVD, MP3 and computer. The
knob labeled ADJ controls the
input level.
5. AUX OUTPUT AND ADJ: Send
audio out via this 3.5 mm output
jack. The knob labeled ADJ controls
the output level.
Helpful Hint:
The graphic equalizer comes preset from the factory to provide optimum sound in the
majority of classrooms. Sometimes fine-tuning is required to eliminate feedback.
Fine-tuning the Graphic Equalizer:
1. Remove the two screws and take the cover off.
2. Walk around room (near speakers) and listen for squealing or feedback.
3. Lower the 2K5 and/or 4K sliders if a high-pitched squealing is present.
4. Lower the 400 or 700 sliders if a low-pitched ring is present.
5. Reduce volume is feedback is still present.
1. Ensure That the LightMic is turned OFF.
REAR AND BOTTOM PANEL CONTROLS
>>
EQUALIZER
250 400 600 1K 1K6 2K5 6K3
4K
+10
0
-10
DC IN
24VDC
+–
AUX OUT
ADJ ADJ
AUX IN
1
2
3
45
LightSPEED
OPERATING THE OPTIONAL HM-70 HANDHELD MIC
ON
OFF
MUTE
(Center Position)
3. Grip the barrel of the HM-70 in the
center section just below the power
switch. Avoid gripping the HM-70
around the bottom, covering the
infrared emitters circling the base.
This could interrupt signal trans
mission from the microphone to
the receiver.
4. Speak directly into the microphone
at a normal level. Slowly increase
the B VOLUME until you can just
hear your voice.
5. Slide the switch to the OFF position
to turn off the HM-70. (Make sure the
power indicator light is off.)
The Channel A/B switch is located
inside the battery compartment.
The switch is set to Channel B at
the factory.
1. Slide the power switch on the side
of the HM-70 all the way up. The
power indicator LED will glow red
and stay on.
2. The center position of the power
switch is MUTE. When in this mode,
the HM-70 is transmitting a signal,
but no audio can be heard through
the system. This is useful if you
wish to temporarily turn audio off
during a private conversation.

REDCAT User Manual
7 | REDCAT User Manual REDCAT User Manual | 12
REDCAT User Manual
1. ON/OFF/MUTE Switch: This switch,
located on the side of the LightMic,
turns the unit on or off.
2. Channel Select Switch (CH A/B):
This switch allows for selection
between Channel A or B. If you are
using a single microphone/transmit-
ter for your system, we recommend
using Channel A.
3. Power/Charge LED Indicator: The
light glows blue when the LightMic
is powered ON, and red when
charging.
4. External Microphone Input (MIC):
Use the 3.5 mm MIC jack for the
optional TK-250 headset microphone
(part# MC-TK250LTM).
5. Auxiliary (AUX): Plug a laptop, MP3
player or other audio source into
this jack to wirelessly transmit the
audio signal to be played through
the REDCAT.
6. Charger Input (CHARGER): Plug
the wall charger into this jack for
daily charging. The LED on the front
of the LightMic will glow red to
indicate charging.
LIGHTMIC CONTROLS AND CONNECTIONS
LT-71
LT-71
1
2
3
4
5
6
AUX OUT
ADJ ADJ
AUX IN
OUTPUT TO PERSONAL FM TRANSMITTER
2. Determine the size and type of audio input
jack on the device as many manufacturers’
products differ in connector size and
shape. The LightSPEED LES-370 Personal
FM System requires a 3.5 mm to 3.5 mm
patch cable (part# CA-MMC3535, not included).
5. With the REDCAT and ALD turned on, speak into the LightMic and slowly
adjust “ALD VOLUME” control until the appropriate audio level is attained
in the ALD’s receiver headphones.
1. Turn the AUX OUT volume adjust control on the bottom of the REDCAT all
the way down (fully counterclockwise).
3. Connect a patch cable from the ALD’s micro-
phone jack to the 3.5 mm AUX OUT jack on
the bottom of the REDCAT.
4. Adjust the volume control on the ALD’s receiver to
maximum output.
AUX OUT
ADJ ADJ
AUX IN

REDCAT User Manual
11 | REDCAT User Manual REDCAT User Manual | 8
REDCAT User Manual
SYSTEM OPERATION
TURNING THE SYSTEM ON
4. Adjust the volume up or down as needed. At proper
volume level, you will just barely be able to hear your
own voice. Remember! Classroom Amplification Technology
is a low-volume system providing clarity of speech and even
sound distribution throughout the learning environment.
Having the volume set too high will result in feedback
and listener fatigue.
2. Slip the LT-71 LightMic with
lanyard around the neck
and position the top of the
microphone just below the
collarbone. Note: Positioning
of the LightMic is critical for
proper volume adjustment.
LT-71
1. Turn the REDCAT on. The LED on the power switch will glow.
3. Turn on the LightMic and set the operating
channel to “A.” This microphone will be
designated as the “Teacher Mic.”
5. Once initial volume level is set,
walk around the room and listen for
audio dropout and overall audio
quality. Fine-tuning the audio is
accomplished by making minor
adjustments to the 8-Band Graphic
Equalizer on the back panel of the
receiver/amplifier.
6. If a second student pass-around microphone
was purchased with system, repeat steps
3-4 but set the operating channel to “B.”
(If a HM-70 was purchased, see page 16.)
A CH B OFF ON
>>
>>
>>
>>
A CH B OFF ON
CH B
CH A
POWER
CH B
CH A
POWER
>>
>>
EQUALIZER
250 400 600 1K 1K6 2K5 6K3
4K
+10
0
-10
DC IN
24VDC
+
–
AUX OUT
ADJ ADJ
AUX IN
AUX OUT
ADJ ADJ
AUX IN
1
Below are instructions on how to connect an external audio device
like a TV, VCR, DVD, MP3 or computer directly into the REDCAT.
DIRECT INPUT FROM EXTERNAL AUDIO EQUIPMENT
2. Connect a patch cable (not included)
from the audio source into the aux
input jack on the bottom of the
REDCAT.
3. With both the REDCAT and audio source
power on, adjust the AUX IN volume control
until the desired level is achieved. NOTE!
Be careful to not to set the volume to high,
as this can distort the speaker and potentially
cause damage.
1. Turn the aux in volume adjust control on the bottom of the
REDCAT all the way down (fully counterclockwise).
2
AUX OUT
ADJ ADJ
AUX IN
3

REDCAT User Manual
9 | REDCAT User Manual REDCAT User Manual | 10
REDCAT User Manual
USING THE LIGHTMIC TO AMPLIFY EXTERNAL AUDIO EQUIPMENT
LT- 71
The LightMic contains a 3.5 mm audio input jack to connect to an audio
source like a laptop or digital music player. The LightMic will transmit the
audio signal to be played through the REDCAT.
1. Set the LightMic to Channel B. If your system includes two LightMics,
use the student microphone (already set to Channel B). NOTE: This
feature works on both channels but we recommend using Channel B
so the teacher’s volume on the CH A does not have to be adjusted.
2. Plug your laptop, MP3 player or other audio source into the input on
the LightMic labeled “AUX” using a 3.5 mm patch cable.
3. Adjust the volume of the audio source to achieve desired loudness.
If more volume is needed, adjust the volume of the REDCAT.
LT- 71
CHARGING THE LIGHTMIC
Do not attempt to charge alkaline batteries.
They can overheat and expand, creating a
significant hazard and damaging the LightMic.
(This is not covered by the warranty.)
Helpful Hint
1. Ensure that the LightMic is turned OFF.
2. Make sure the wall charger is plugged into a
wall outlet.The LED on the front of the LightMic
will glow red when charging.
3. Leave the LightMic plugged in overnight
(8–10 hrs.) to obtain a full charge.

REDCAT User Manual
9 | REDCAT User Manual REDCAT User Manual | 10
REDCAT User Manual
USING THE LIGHTMIC TO AMPLIFY EXTERNAL AUDIO EQUIPMENT
LT- 71
The LightMic contains a 3.5 mm audio input jack to connect to an audio
source like a laptop or digital music player. The LightMic will transmit the
audio signal to be played through the REDCAT.
1. Set the LightMic to Channel B. If your system includes two LightMics,
use the student microphone (already set to Channel B). NOTE: This
feature works on both channels but we recommend using Channel B
so the teacher’s volume on the CH A does not have to be adjusted.
2. Plug your laptop, MP3 player or other audio source into the input on
the LightMic labeled “AUX” using a 3.5 mm patch cable.
3. Adjust the volume of the audio source to achieve desired loudness.
If more volume is needed, adjust the volume of the REDCAT.
LT- 71
CHARGING THE LIGHTMIC
Do not attempt to charge alkaline batteries.
They can overheat and expand, creating a
significant hazard and damaging the LightMic.
(This is not covered by the warranty.)
Helpful Hint
1. Ensure that the LightMic is turned OFF.
2. Make sure the wall charger is plugged into a
wall outlet.The LED on the front of the LightMic
will glow red when charging.
3. Leave the LightMic plugged in overnight
(8–10 hrs.) to obtain a full charge.

REDCAT User Manual
11 | REDCAT User Manual REDCAT User Manual | 8
REDCAT User Manual
SYSTEM OPERATION
TURNING THE SYSTEM ON
4. Adjust the volume up or down as needed. At proper
volume level, you will just barely be able to hear your
own voice. Remember! Classroom Amplification Technology
is a low-volume system providing clarity of speech and even
sound distribution throughout the learning environment.
Having the volume set too high will result in feedback
and listener fatigue.
2. Slip the LT-71 LightMic with
lanyard around the neck
and position the top of the
microphone just below the
collarbone. Note: Positioning
of the LightMic is critical for
proper volume adjustment.
LT-71
1. Turn the REDCAT on. The LED on the power switch will glow.
3. Turn on the LightMic and set the operating
channel to “A.” This microphone will be
designated as the “Teacher Mic.”
5. Once initial volume level is set,
walk around the room and listen for
audio dropout and overall audio
quality. Fine-tuning the audio is
accomplished by making minor
adjustments to the 8-Band Graphic
Equalizer on the back panel of the
receiver/amplifier.
6. If a second student pass-around microphone
was purchased with system, repeat steps
3-4 but set the operating channel to “B.”
(If a HM-70 was purchased, see page 16.)
A CH B OFF ON
>>
>>
>>
>>
A CH B OFF ON
CH B
CH A
POWER
CH B
CH A
POWER
>>
>>
EQUALIZER
250 400 600 1K 1K6 2K5 6K3
4K
+10
0
-10
DC IN
24VDC
+
–
AUX OUT
ADJ ADJ
AUX IN
AUX OUT
ADJ ADJ
AUX IN
1
Below are instructions on how to connect an external audio device
like a TV, VCR, DVD, MP3 or computer directly into the REDCAT.
DIRECT INPUT FROM EXTERNAL AUDIO EQUIPMENT
2. Connect a patch cable (not included)
from the audio source into the aux
input jack on the bottom of the
REDCAT.
3. With both the REDCAT and audio source
power on, adjust the AUX IN volume control
until the desired level is achieved. NOTE!
Be careful to not to set the volume to high,
as this can distort the speaker and potentially
cause damage.
1. Turn the aux in volume adjust control on the bottom of the
REDCAT all the way down (fully counterclockwise).
2
AUX OUT
ADJ ADJ
AUX IN
3

REDCAT User Manual
7 | REDCAT User Manual REDCAT User Manual | 12
REDCAT User Manual
1. ON/OFF/MUTE Switch: This switch,
located on the side of the LightMic,
turns the unit on or off.
2. Channel Select Switch (CH A/B):
This switch allows for selection
between Channel A or B. If you are
using a single microphone/transmit-
ter for your system, we recommend
using Channel A.
3. Power/Charge LED Indicator: The
light glows blue when the LightMic
is powered ON, and red when
charging.
4. External Microphone Input (MIC):
Use the 3.5 mm MIC jack for the
optional TK-250 headset microphone
(part# MC-TK250LTM).
5. Auxiliary (AUX): Plug a laptop, MP3
player or other audio source into
this jack to wirelessly transmit the
audio signal to be played through
the REDCAT.
6. Charger Input (CHARGER): Plug
the wall charger into this jack for
daily charging. The LED on the front
of the LightMic will glow red to
indicate charging.
LIGHTMIC CONTROLS AND CONNECTIONS
LT-71
LT-71
1
2
3
4
5
6
AUX OUT
ADJ ADJ
AUX IN
OUTPUT TO PERSONAL FM TRANSMITTER
2. Determine the size and type of audio input
jack on the device as many manufacturers’
products differ in connector size and
shape. The LightSPEED LES-370 Personal
FM System requires a 3.5 mm to 3.5 mm
patch cable (part# CA-MMC3535, not included).
5. With the REDCAT and ALD turned on, speak into the LightMic and slowly
adjust “ALD VOLUME” control until the appropriate audio level is attained
in the ALD’s receiver headphones.
1. Turn the AUX OUT volume adjust control on the bottom of the REDCAT all
the way down (fully counterclockwise).
3. Connect a patch cable from the ALD’s micro-
phone jack to the 3.5 mm AUX OUT jack on
the bottom of the REDCAT.
4. Adjust the volume control on the ALD’s receiver to
maximum output.
AUX OUT
ADJ ADJ
AUX IN

REDCAT User Manual | 6
13 | REDCAT User Manual
REDCAT User ManualREDCAT User Manual
1. DC INPUT: Plug the 24 V power
supply into this jack.
2. POWER SUPPLY: Plug the 24 V power
supply into an AC outlet.
3. 8-BAND GRAPHIC EQUALIZER: The
sliding controls adjust the levels of
the various audio frequencies. This
allows the installer to properly
equalize the system to produce
optimum sound quality.
4. AUX INPUT AND ADJ: This
mono RCA jack accepts input from
various audio devices like TV,
CD/DVD, MP3 and computer. The
knob labeled ADJ controls the
input level.
5. AUX OUTPUT AND ADJ: Send
audio out via this 3.5 mm output
jack. The knob labeled ADJ controls
the output level.
Helpful Hint:
The graphic equalizer comes preset from the factory to provide optimum sound in the
majority of classrooms. Sometimes fine-tuning is required to eliminate feedback.
Fine-tuning the Graphic Equalizer:
1. Remove the two screws and take the cover off.
2. Walk around room (near speakers) and listen for squealing or feedback.
3. Lower the 2K5 and/or 4K sliders if a high-pitched squealing is present.
4. Lower the 400 or 700 sliders if a low-pitched ring is present.
5. Reduce volume is feedback is still present.
1. Ensure That the LightMic is turned OFF.
REAR AND BOTTOM PANEL CONTROLS
>>
EQUALIZER
250 400 600 1K 1K6 2K5 6K3
4K
+10
0
-10
DC IN
24VDC
+–
AUX OUT
ADJ ADJ
AUX IN
1
2
3
45
LightSPEED
OPERATING THE OPTIONAL HM-70 HANDHELD MIC
ON
OFF
MUTE
(Center Position)
3. Grip the barrel of the HM-70 in the
center section just below the power
switch. Avoid gripping the HM-70
around the bottom, covering the
infrared emitters circling the base.
This could interrupt signal trans
mission from the microphone to
the receiver.
4. Speak directly into the microphone
at a normal level. Slowly increase
the B VOLUME until you can just
hear your voice.
5. Slide the switch to the OFF position
to turn off the HM-70. (Make sure the
power indicator light is off.)
The Channel A/B switch is located
inside the battery compartment.
The switch is set to Channel B at
the factory.
1. Slide the power switch on the side
of the HM-70 all the way up. The
power indicator LED will glow red
and stay on.
2. The center position of the power
switch is MUTE. When in this mode,
the HM-70 is transmitting a signal,
but no audio can be heard through
the system. This is useful if you
wish to temporarily turn audio off
during a private conversation.

5 | REDCAT User Manual REDCAT User Manual | 14
REDCAT User Manual REDCAT User Manual
CH B
CH A
POWER
LightSPEED
SIDE PANEL CONTROLS
1. POWER Switch/POWER Indicator:
This switch is used to turn the
REDCAT ON (switch up), or OFF
(switch down). When the POWER
switch is in the ON position, the
POWER light will glow red.
2. A VOLUME: Controls the volume
level of the teacher microphone
that is switched to Channel A.
Rotating the knob clockwise
increases volume level.
3. B VOLUME: Controls the volume
level of a second microphone
that is switched to Channel B.
Rotating the knob clockwise
increases volume level.
4. IR Indicators (IR): These lights will
glow red when the corresponding
microphone is turned on. This light
confirms the REDCAT is receiving a
steady infrared signal.
1
2
3
4
CHARGING THE HM-70 HANDHELD MIC
1. Ensure the HM-70 handheld
microphone is turned OFF (ON/OFF
switch on the side of the unit).
2. Make sure the wall charger is
plugged into an electrical outlet.
Connect one of the charging plugs
into the jack labeled CHARGER on
the side of the HM-70. The HM-70’s
rechargeable batteries are factory
installed.
3. The power indicator light next to
the power switch glows green when
the cable is connected and charg-
ing correctly. The light goes out
when fully charged. Batteries
will charge in 8 to 12 hours. A fully
charged battery will run for up to 8
hours of continuous operation.
All LightSPEED microphone transmitters can
remain charging for up to 10 days. Overcharg-
ing will not create a hazard, but will shorten
battery life.
Helpful
Hint:

REDCAT User Manual | 4
15 | REDCAT User Manual
REDCAT User ManualREDCAT User Manual
EQUALIZER
250 400 600 1K 1K6 2K5 6K3
4K
+10
0
-10
DC IN
24VDC
+–
1. Select a location. Identify an open
area on the wall with the following
characteristics:
• Power Source
Within 7 feet of an electrical outlet
• Proximity
BEST: Centered on the long wall in
the back of the classroom
GOOD: On the wall on either side
of the classroom
AVOID: Locations right next to
where the teacher
instructs (can result
in feedback)
• Height
6–8 feet high
SETTING UP THE REDCAT
LightSPEED
If the walls are drywall:
• Drill a pilot and then screw in the
sheet rock mollies until they are
flush with the surface.
• Hold the bracket back up to the
wall and, using the screws pro-
vided; tightly secure the bracket to
the wall.
If the wall are wood:
• Screw the mounting bracket to the
wall with the two mounting screws
at the market spaces. Tighten the
screws so that the bracket hangs
snug to the wall.
• Hang the REDCAT onto the
bracket so that both ears slide into
the slots on the back of the RED-
CAT. Make sure to route the power
cord down the wall, behind the
REDCAT so that it can be plugged
into the nearby electrical outlet.
• Secure the RECAT to the bracket
using the two screws provided.
3. Plug it in. Plug the power cable into
an electrical outlet or extension
cord.
4. Turn it on. Flip the power switch
on and proceed to page 8 for
system operation instruction.
2. Hang it on the wall
• Remove the table stand from the
REDCAT by unscrewing the two
screws on the bottom of the unit.
• Locate the wall bracket
• Using a level, hold the bracket up to
the wall in the location selected and
use a pencil to mark screw holes.
Bracket Slots
Wall Bracket
REDCAT (rear view)
Wall Bracket
Speak in a natural voice. A normal conversational speech level
will provide an adequate signal. It is not necessary to increase
the intensity of your voice—the amplification system provides
adequate amplification (approximately 5 – 10 dB) above
ambient room noises.
LightSPEED Classroom Amplification Systems are guaranteed against malfunction due to
defects in materials and workmanship for a period of FIVE (5) YEARS, beginning at the date
of the purchase invoice. If such malfunction occurs, the product will be repaired or replaced
(at LightSPEED’s option) without charge during the period and under the limitations stipulated
in the data sheet or the user’s manual.
1. Limited exclusions specifically apply to all microphone elements, rechargeable
batteries, battery chargers and their assemblies, also external cables and wires.
2. Warranty on microphones/microphone elements is limited to original manufacturer’s
warranty (usually ONE (1) YEAR).
3. Warranty on LightSPEED NiMH AA rechargeable batteries is ONE (1) YEAR.
3. Warranty on LightMic’s internal microphone is FIVE (5) YEARS.
4. Prepaid shipping label provided by LightSPEED factory or an authorized warranty
service center.
5. Warranty does not extend to finish, appearance items, or malfunctions due to abuse or
operation other than specified conditions, nor does it extend to incidental or consequential
damages. Repair by other than LightSPEED or its authorized service agencies will void this
guarantee. Information on authorized service agencies is available from LightSPEED
Technologies, Inc.
TIPS ON CLASSROOM AMPLIFICATION
Avoid wearing jewelry that may rub or bump against
the microphone.
Turn the LightMic off during private conversations with a student,
parent, or other classroom visitor. You can also cover the LED
lens on top of the LightMic to block the signal.
Recharge batteries each night. When recharged nightly, operating
time (actual usage) for the transmitters will last through a typical
school day.
Our Service Department (800.732.8999, 6:30 a.m. – 5 p.m.,
PST) will handle all your repair/replacement needs.
1
2
3
4
Five-year limited warranty
Wall Set-up

SETTING UP THE REDCAT
LightSPEED
1. Set it up. Find a flat surface and
keep in mind the following:
• Power Source
Within 7 feet of an electrical outlet
• Proximity
BEST: Along the wall in the back of
the classroom
GOOD: Along either side of the
wall or in a corner
AVOID: Locations next to where
the teacher instructs (can
result in feedback)
• Height
3–6 feet high
2. Plug it in
Uncoil the power cable and plug it
into an electrical outlet.
3. Turn it on
Flip the power switch on and
proceed to page 8 for system
operation instructions.
Tabletop Set-up
UNPACKING YOUR SYSTEM DETERMINE SET-UP METHOD
The REDCAT is shipped with a table
stand connected and ready for use. A
wall bracket is also included.
Advantages of either include:
Tabletop (recommended):
• Virtually no setup time
• Greater flexibility to move to
different locations
Wall-mount:
• More permanent setup
• Greater security
Ensure that you have received all of
the components of your system.
• REDCAT™receiver/amplifier and
power supply
• LT-71 LightMic™ transmitter
• BC-TXLT transmitter wall charger
• Tabletop stand (attached to the
REDCAT) and wall-mount bracket
• Optional: second LightMic or
IR handheld microphone
3 | REDCAT Users Manual REDCAT Users Manual | 16
REDCAT User Manual REDCAT User Manual
SELECTING A LOCATION FOR THE REDCAT
TROUBLESHOOTING GUIDE
Battery Check
• Confirm batteries are charged
each night.
• Make sure the LT-71 is turned off
while charging so that it will attain
a full charge. Full charge will last
eight hours.
• Make sure the charge cord is
connected to the cradle charger.
• Inspect the battery contacts. Clean
and adjust if necessary.
Hearing Static
• Ensure the REDCAT is in an
acceptable location and the line of
site to the IR sensors is not impeded
(refer to placement in manual). A
single sensor will cover a 1600 sq. ft.
enclosed classroom.
• Ensure that no other LT71/HM70 is
operating on the same channel.
• If an external microphone is in use,
try a another LightMic that is known
to be working (if available) to isolate
the problem. If static persists with
“known good” microphone, the
LT-71 input jack has damage and
will need service.
Low Volume or Feedback:
• Ensure microphone is positioned
appropriately, just below the collar
bone. If a headset microphone is in
use, the end of the mic boom
should be positioned at the corner
of the mouth.
• Check volume level on the REDCAT.
If the volume is too high, feedback
WILL occur. Adjust accordingly.
No Sound From Speaker
• Turn the REDCAT on. Confirm that
the POWER light located on the
front panel switch is on.
• Confirm signal is being received
at the REDCAT. The IR signal
light will be lit (red) indicating a
signal is being received.
If you review these instructions and still have questions, write down the serial
number and model number of your system and call LightSPEED Technical Services
at 800.732.8999, 6:30 a.m. – 5 p.m. PST.
Note: Most problems are directly related to low battery power. Please
run through the “Battery Check” items first. For remaining trouble-
shooting, use known good, fully-charged batteries.