Lightspeed 880iR User manual

880iR
Classroom Audio System
Lightspeed Technologies, Inc.
11509 SW Herman Rd
Tualatin, OR 97062
800.732.8999
www.lightspeed-tek.com User Manual
Turn on the 880iR.
MN0046US01-2
LES 880iR Classroom Amplification System
123456
MN0046US01-2
DAILY REDMIKE USE
TURN ON THE REDMIKE
CHARGE BATTERIES
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 audio system provides
adequate amplication (approximately 5 – 10 dB) above
ambient room noises.
Avoid wearing jewelry that may rub or bump against
the microphone.
Turn the REDMIKE off during private conversations with a
student, parent, or other classroom visitor. You can also cover
the LED lens on top of the REDMIKE 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.
START OF THE DAY
Turn the
microphone
ON using the
ON/OFF switch
on the side of
the REDMIKE
and speak
normally. Set
the channel
switch to A.
Return the
REDMIKE to
the cradle
charger and
recharge the
REDMIKE at
the end of
the day.
1
2
3
4
Remove the
REDMIKE from
the charger and
place it around
your neck. Adjust
the neck strap
so the top of the
microphone rests
just below your
collarbone.

880iR User Manual
880iR User Manual | i
880iR User Manual
CONGRATULATIONS!
Congratulations on your purchase of the 880iR Classroom Audio
System! This simple, yet powerful technology provides crystal-clear
sound throughout the classroom, allowing every child to hear every word
every time.
As the teacher speaks into the REDMIKE™classroom microphone, his
or her voice is transmitted to the 880iR and then amplied through
the loudspeaker(s). The standard system includes the 880iR infrared
receiver/amplier, REDMIKE classroom microphone, SR-70F infrared
sensor and speaker package.
The 880iR is a two-channel receiver amplier that allows the use of up
to two microphones simultaneously and up to four additional audio input
sources such as TV, VCR, DVD, CD, MP3, etc. In addition, Lightspeed
offers various speaker options that are included with your system to
provide optimal sound in rooms of all shapes and sizes.
The REDMIKE is an infrared classroom microphone. This pendant-style
microphone is clipped to a lavaliere cord and worn around the teacher’s
neck. It can be used as a standard handheld microphone for student
interaction and class participation.

880iR User Manual
ii | 880iR User Manual
880iR User Manual
1. Read Instructions—All 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 Warnings—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
Lightspeed 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 the 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 Lightspeed product.
10.Damage Requiring Service—This
Lightspeed product should be serviced
only by qualied service personnel.
The user should not attempt to service
this Lightspeed product.
11.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.
SAFETY INSTRUCTIONS AND CERTIFICATIONS
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER (OR BACK)
NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL
RISK OF ELECTRIC SHOCK DO NOT OPEN
The lightning ash with arrowhead symbol
within an equilateral triangle is intended to
alert the user to the presence of uninsulated
“dangerous voltage” within the product’s
enclosure, that may be sufcient magnitude to
constitute a risk of electric shock.
The exclamation point within an equilateral
triangle is intended to alert the user to
the presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.
CAUTION
CERTIFICATIONS
Complies with 72/23/EEC Low Voltage Directive
and 89/336/EEC Electromagnetic Compatibility
Directive. Compliance was demonstrated to the
following specications as listed in the Ofcial
Journal of the European Union:
EN 60950: Electrical Safety – A1:1993,
A2:1993, A3:1993, A4:1997
EN 55022: RF Emissions, Information
Technology Equipment
EN 55024: EMC Immunity Standard
EN 61000-3-2: Harmonics
EN 61000-3-3: Voltage Fluctuation
Lightspeed Technologies launched a formal
product recycle program in Europe that
complies with the European Union Directive
2002/96/EC on Waste Electrical and Electronic
Equipment (“WEEE Directive”). Please visit our
website at www.lightspeed-tek.com for more
information.
This product is manufactured using lead-free
processes and is free of other materials
harmful to the environment. It conforms to the
most stringent new European guidelines for
consumer products (RoHS).

880iR User Manual
880iR User Manual | iii
880iR User Manual
TABLE OF CONTENTS
880iR CLASSROOM AUDIO SYSTEM
Safety Instructions and Certications ........................................................................ii
SECTION 1: System Overview ................................................................................. 1
System Components ............................................................................................. 2
Front Panel Controls............................................................................................... 3
Speaker Control .................................................................................................................. 4
Rear Panel Controls ............................................................................................... 5
Teacher Voice Priority.......................................................................................................... 5
Page First: Emergency Page Priority.................................................................................... 6
REDMIKE Controls and Connections ...................................................................... 7
Attaching the Lanyard to REDMIKE........................................................................ 8
Cradle Charger Controls and Connections............................................................. 9
Optional LT-71 Controls and Connections .............................................................10
Optional HM-70 Controls and Connections ...........................................................11
SECTION 2: Installation ..........................................................................................12
Unpacking Your System .................................................................................................... 13
Location of the Receiver/Amplier.................................................................................. 14
IR Sensor Installation............................................................................................15
Suspended Ceiling Mount...................................................................................................... 16
Wall/Solid Ceiling Mount.................................................................................................... 16
Speaker Installation............................................................................................................... 17
Audio Integration ................................................................................................................... 18
Finalizing Connections ...................................................................................................... 20
Final Check .......................................................................................................................... 21
SECTION 3: Initial Set-up, Charging and Optional Features ................................22
Initial Set-Up: REDMIKE ........................................................................................23
Initial Set-Up: Optional LT-71 ................................................................................24
Initial Set-Up: Optional HM-70 ..............................................................................25
Charging the REDMIKE .........................................................................................26
Charging the Optional LT-71 .................................................................................27
Charging the Optional HM-70 ...............................................................................28
Output to Personal FM Transmitter .......................................................................29
Using the REDMIKE to Amplify External Audio Equipment....................................30
SECTION 4: Troubleshooting, Daily Use and Warranty.........................................31
Troubleshooting Guide..........................................................................................32
Daily Use Instructions...........................................................................................33
Tips on Classroom Audio ......................................................................................34
Warranty Statement .............................................................................................35
System Specications ..........................................................................................35
Individual Components and Optional Accessories ................................................36
User Notes............................................................................................................37

880iR User Manual
1 | 880iR User Manual
SECTION 1
System Overview

880iR User Manual
880iR User Manual | 2
SYSTEM COMPONENTS
Keep ALL packaging materials. If the system must be returned, using the
original packing material will be quick, convenient and prevent damage.
880iR Infrared Receiver/Amplier and Power Supply
REDMIKE Classroom
Microphone
SR-70F Infrared
Sensor
Sensor Cable
Optional LT-71 LightMic
and Charger Cable
Optional HM-70
Handheld Microphone
and Charger Cable
Speakers and
Speaker Wire
LES 880iR Classroom Amplification System
123456
Charging Cradle and Power Supply
L T - 71
Helpful Hint

880iR User Manual
3 | 880iR User Manual
LES 880iR Classroom Amplification System
123456
FRONT PANEL CONTROLS
1. POWER Switch/Indicator:
This switch is used to turn the
880iR ON or OFF. The POWER light
will glow RED when the system is
on.
2. IR Indicators (IR): These
lights will glow RED when the
corresponding microphone is
turned on. A steady light conrms
the 880iR is receiving a strong
infrared signal.
3. AF Indicators (AF): These lights
ash GREEN when audio (voice)
from the microphone is detected.
3
4. A VOLUME: Controls the volume
level of the microphone set to
channel A. Rotating the knob
clockwise increases volume level.
5. B VOLUME: Controls the volume
level of the microphone set to
channel B. Rotating the knob
clockwise increases volume level
2
1
3
45

880iR User Manual
880iR User Manual | 4
LES 880iR Classroom Amplification System
123456
Speaker Control
6. AUDIO INPUT VOLUME:
• COMPUTER: Controls the volume
level of the audio input from
a COMPUTER or other device
connected to the “COMPUTER”
input. Rotating the knob clockwise
increases volume level.
• TV/VCR: Controls the volume level
of the audio input from a TV/VCR
or other device connected to the
“TV/VCR” input. Rotating the knob
clockwise increases volume level.
• CD/DVD: Controls the volume level
of the audio input from a CD/DVD
or other device connected to the
“CD/DVD” input. Rotating the knob
clockwise increases volume level.
• AUX: Controls the volume level of
the audio input from a AUX or other
device connected to the “AUX”
input. Rotating the knob clockwise
increases volume level.
7. SPEAKER ZONING: These switches
turn the corresponding speaker
(connected to the same numbered
jack on the back of the unit) ON
or OFF.
• Speaker Zoning: By “zoning” or separating the classroom into different areas
where audio may or may not be desired, the teacher has greater exibility
controlling the dispersion of sound throughout the room. Zoning is especially
useful in large classrooms and media centers.
• Speaker Volume Control: An area of the classroom might contain a noise
emitter such as an HVAC system. In this case, it may be necessary to turn up
the volume of the affected speaker to overcome the noise in that area. When
this situation arises, the 880iR allows the user to ne tune the output level.
FRONT PANEL CONTROLS (cont’d)
7
6

880iR User Manual
5 | 880iR User Manual
SPEAKER
OUTPUTS
2504007001K 1K42K54K 6K
+10
0
-10
AUX
VOL
ADJ
COMPUTER
AUDIO INPUTS
TV/VCR CD/DVD
800iX
INPUT
PAGING INPUT
DC POWER
CHARGERS24VDC
L
R
SENSOR INPUTS
SENSOR
SHORT
1234
AUX
ALD
VOL
ADJ
ALD
OUT
AUX
OUT
CH A
PRIORITY
R
L
ADJ
SPEAKER
VOLUME
56
CH. B/Audio IN
Audio
IN
OFF
REAR PANEL CONTROLS
2
1. SPEAKER VOLUME (1–6): These knobs
control the output volume of each
corresponding speaker. Under normal
conditions, the volume controls should
remain in the center (12:00) position.
2. SPEAKER OUTPUTS: These euro-block
connectors are used to connect the
880iR to the loudspeakers. Depending
on the speaker package, all the outputs
may not be used.
3. CH A PRIORITY SENSITIVITY: Adjusts
the audio level required to activate the
priority function. Fully counterclockwise
requires a much stronger audio level to
activate the function (less sensitivity).
4. DC POWER: Plug the power supply
(24V/1.75A) into this jack.
5. CH A PRIORITY CONTROL: This
3-position switch activates the Teacher
Voice Priority function.
6. CHARGERS: These jacks can be used
to charge the optional LightMic or
handheld mic as an alternative to
connecting them to the REDMIKE
cradle charger.
7. ALD/AUX VOL ADJ: These controls
adjust the audio output level to an
assisted listening device or recorder.
Rotating the knob clockwise increases
volume level.
8. ALD/AUX AUDIO OUT: 3.5mm output
to an ALD or recording device.
9. PAGING ADJ: Adjusts the audio level
required to activate the optional
PageFirst system feature.
8
Teacher Voice Priority
This feature allows the teacher’s voice to be heard over the other audio being played
through the 880iR. The three position switch has the following functionality:
• OFF: Normal operation—turns Teacher Priority off.
• CH.B/Audio IN: Teacher’s voice (the microphone set to Channel A) has priority over the student
microphone (Channel B) and audio inputs. When the teacher speaks into the microphone, the audio
of the other sources will mute. When the teacher stops talking or the REDMIKE is turned off, the
audio returns.
• Audio In: Teacher’s voice has priority over any audio sources that are plugged into the Audio Inputs
only (Computer, TV/VCR, CD/DVD, etc.). When the teacher speaks into the microphone, the audio
of the input sources will mute. When the teacher stops talking or the REDMIKE is turned off, the
audio returns.
1
46
3
5
8
7
9

880iR User Manual
880iR User Manual | 6
SPEAKER
OUTPUTS
2504007001K 1K42K54K 6K
+10
0
-10
AUX
VOL
ADJ
COMPUTER
AUDIO INPUTS
TV/VCR CD/DVD
800iX
INPUT
PAGING INPUT
DC POWER
CHARGERS24VDC
L
R
SENSOR INPUTS
SENSOR
SHORT
1234
AUX
ALD
VOL
ADJ
ALD
OUT
AUX
OUT
CH A
PRIORITY
R
L
ADJ
SPEAKER
VOLUME
56
CH. B/Audio IN
Audio
IN
OFF
REAR PANEL CONTROLS (cont’d)
10. PAGING INPUT: Input from optional
PageFirst sensor.
11. 800iX INPUT: This input jack allows
for interface with the Lightspeed
800iX wireless microphone
system, which adds two additional
microphone channels.
12. AUDIO INPUTS:
• COMPUTER: Plug the 3.5mm cord
from a computer or other audio
source into this jack.
• TV/VCR: Plug the RCA stereo cord
from any TV/VCR into this mono
input jack.
•CD/DVD: Plug the RCA stereo cord
from any CD/DVD into this mono
input jack.
• AUX: Plug the RCA stereo cord
from any CD/DVD into this mono
input jack.
13. 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.
14. SENSOR INPUT: The IR sensor cable
connects to either of these two
inputs. Connect additional sensors
to the 880iR to cover large or
odd-shaped classrooms.
15. SENSOR SHORT: This LED glows red
when there is a short in the sensor
or cable.
This optional feature interfaces with an independent classroom paging system. When the
page is broadcast, the system is muted, ensuring important and even emergency school-wide
messages are never missed.
How it works:
1. PageFirst sensor clip is hung around the lead wires attached to the classroom paging
speaker.
2. The clip is hard-wired to the Lightspeed 880iR.
3. As a page is broadcast, the sensor clip detects the audio signal though induction and
immediately mutes the 880iR.
4. When the page is over, the audio to the 880iR returns to normal volume level.
(For full installation instructions refer to the install sheet included with the optional PageFirst sensor.)
13
15
11
14
12
PageFirst: Emergency Page Priority
10

880iR User Manual
7 | 880iR User Manual
1. POWER BUTTON: Press this button
to turn the REDMIKE ON, press
again to turn it OFF (mute).
2. POWER/LOW BATTERY INDICATOR:
A BLUE light indicates the REDMIKE
is on and fully charged. A RED light
indicates a charge is needed.
3. BATTERY COMPARTMENT: To
access the battery compartment,
slide the door downward.
The battery should only be
replaced by a Lightspeed AA
rechargeable sensing battery
(part # BA-NH2A27).
4. AUDIO/MICROPHONE INPUT: Use this
input to plug in a laptop, MP3 player
or other audio source to wirelessly
transmit audio to be played through
the system. Alternatively, an external
microphone can be connected.
5. CHANNEL SELECT SWITCH (CH A/B):
This switch allows for selection between
Channel A or B. If you are using a single
microphone, we recommend using
Channel A.
6. CHARGER CONTACTS (+ -): These
contacts interface with the charging
tabs in the BC-RMCC cradle charger
for daily charging. Simply place the
REDMIKE in the charger.
REDMIKE CONTROLS AND CONNECTIONS
1
2
3
4
5
6

880iR User Manual
880iR User Manual | 8
1. ATTACH THE FOAM HOLDER
Insert the REDMIKE clip into the slot
at the bottom of the foam holder.
ATTACHING THE LANYARD TO REDMIKE
2. POSITION THE REDMIKE
Slip the REDMIKE with lanyard
around the neck. Adjust the neck
strap so the top of the microphone
rests just below your collarbone.

880iR User Manual
9 | 880iR User Manual
CRADLE CHARGER CONTROLS AND CONNECTIONS
1
2
3
1. CHARGE INDICATORS: The light
glows RED while the REDMIKE is
charging. When fully charged, the
light will glow GREEN. A blinking
RED light indicates that no battery
is sensed, (paper insulator may not
have been completely removed.)
A blinking Green LED means a
non- Lightspeed battery has been
installed (possibly an alkaline
battery).
2. DC POWER PORT: Connect the DC
power cord here.
3. OPTIONAL CHARGING PORT: Plug the
charging cord for the optional LT-71 or
the HM-70 microphones here.

880iR User Manual
880iR User Manual | 10
1. ON/OFF/MUTE Switch: This switch
turns LT-71 ON or OFF (mute).
2. Channel Select Switch (CH A/B):
This switch allows for selection
of Channel A or B. If you are
using a single microphone, we
recommend using Channel A.
3. Power/Charge Indicator: The
light glows BLUE when the LT-71
is powered ON, RED when being
charged.
4. External Microphone Input (MIC):
Use the 3.5mm 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 system.
6. Charger Input (CHARGER): Plug
the charging cable from the
charger into this jack for daily
charging. The LED on the front will
glow RED to indicate charging.
LT- 71
LT- 71
1
2
4
5
63
OPTIONAL LT-71 CONTROLS AND CONNECTIONS

880iR User Manual
11 | 880iR User Manual
1
5
34
1. ON/OFF/MUTE Switch: This switch
turns the unit ON, OFF or MUTE.
2. Channel Select Switch (CH A/B):
Located in the battery compartment,
the switch is set to Channel B at
the factory.
3. Power/Charge Indicator: The
light glows RED when the HM-70
is powered ON, GREEN when
charging.
4. Charger Input (CHARGER): Plug
the charging cable from the charger
into this jack for daily charging.
5. Infrared Emitters: Avoid covering
the emitters as you grip the HM-70
as this could interrupt signal
transmission from the microphone.
6. Volume Gain Adjustment:
Optimum volume level is
pre-set at the factory and no
adjustment should be necessary.
62
NiMH
OPTIONAL HM-70 CONTROLS AND CONNECTIONS

880iR User Manual
880iR User Manual | 12
SECTION 2
Installation

880iR User Manual
13 | 880iR User Manual
Ensure that you have received all of the components of your system.
1. UNPACKING YOUR SYSTEM
880iR Infrared Receiver/Amplier and Power Supply
REDMIKE™Classroom
Microphone
SR-70F Infrared Sensor and cable
LES 880iR Classroom Amplification System
123456
Charging Cradle and Power Supply
Speakers and Speaker Wire
Systems are congured with one of ve
speaker types shown to the right.
NXQ (x 1)
CNXQ (x 1)
WMQ (x 4)
DRQ (x 4)
MCQ (x 1)

880iR User Manual
880iR User Manual | 14
2. LOCATION OF THE RECEIVER/AMPLIFIER
• Before running wires to the 880iR
or plugging in, nd a suitable,
stable location for the amplier.
Ideally, the teacher should have
ready access and an electrical
outlet should be within
six feet. The best
possible location
for the 880iR is in a
media cabinet with
any existing audio/
video equipment.
• A good location would be on any
stable bookcase or shelf within
6 feet of an electrical outlet. The
optional Lightspeed wall shelf (part
#AC-800WB) is specically designed
to support the 880iR.
• Wires should be routed back directly to the
amplier, so select a location that is free from
obstructions that may make routing wire
difcult.
(Example: placing the 880iR near
a whiteboard or bulletin board
would require the wiring
to be run an extra
distance in
order to reach
the amplier.)
Best
Good
Avoid!

880iR User Manual
15 | 880iR User Manual
3. IR SENSOR INSTALLATION
Sensor location is very important for optimum performance of the 880iR Classroom
Audio System.
• BEST: On the ceiling at or near the middle of the classroom.
• GOOD: High and centered on the long wall.
• AVOID: Locations in corners, on walls at heights lower than 7 feet, or in places
where the line of sight is or could be obstructed.
Before adjusting the graphic equalizer refer to the intial set-up on page 22.
Sometimes ne-tuning is required to eliminate feedback.
Fine-tuning the Graphic Equalizer:
1. Slide up and ip down the EQ cover door.
2. Walk the room listening for feedback (squealing).
3. Lower the 2K5 and/or 4K sliders if a high-pitched ring is present.
4. Lower the 400 and/or 700 sliders if a low-pitched ring is present.
5. Reduce volume if feedback is still present.
Helpful Hint
Good placement
Best placement
Avoid!

880iR User Manual
880iR User Manual | 16
1. Lift the ceiling tile nearest the grid
rail in your desired sensor location.
Guide one side of the C-clip over
one edge of the grid rail. Providing
rm support to the back of the
grid rail with one hand (to prevent
bending), rmly and carefully snap
the second side of the C-clip over
the edge of the rail.
2. Uncoil sensor wire. Connect one
end of the sensor cable to the
plug on the sensor. Secure wire
overhead and route it back to
the system.
3. Connect the other end of the
sensor cable into one of the sensor
inputs on the back of the system.
IR SENSOR INSTALLATION (cont’d)
1. Screw the plastic mounting strip to
a place high on the wall or in the
middle of the solid ceiling. Mount the
strip horizontally as shown above.
2. Firmly snap the C-clip on the back
of the IR sensor onto the plastic
mounting strip with the sensor plug
hanging down (if a wall mount)
or toward the receiver location (if
ceiling mount).
3. Uncoil the sensor wire. Screw one
end of the sensor cable to the plug
on the sensor. Route the wire back to
the system, securing it along
the way.
4. Connect the other end of the sensor
cable to one of the sensor inputs on
the back of the system.
wall
mounting
strip
c-clip
sensor plug
Suspended Ceiling Mount Wall/Solid Ceiling Mount