Toa IR-802T User manual

This manual offers not only the installation and usage of the IR-802T but also the general descriptions
for the entire Wireless microphone system* such as system configuration and connection.
For details about the system components, refer to the instruction manual attached to each component.
* The Wireless microphone system is comprised of the following components:
• IR-802T CU AQ, IR-802T CU 1Q Infrared Wireless Tuner
• IR-820SP Y 4Q Infrared Wireless Speaker
• IR-200M Y 4Q and IR-310M Y PQ Infrared Wireless Microphones
• IR-200BC Battery Charger
• IR-200BT-2 Ni-MH Battery
OPERATING INSTRUCTIONS
INFRARED WIRELESS TUNER IR-802T
Thank you for purchasing TOA’s Infrared Wireless Tuner.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.
TOA Canada Corporation

2
TABLE OF CONTENTS
1. IMPORTANT SAFETY INSTRUCTIONS ................................ 3
2. SAFETY PRECAUTIONS ..................................................... 4
3. GENERAL DE SCRIPTION ................................................... 6
4. FEATURES .............................................................................. 6
5. HANDLING PRECAUTIONS .................................................... 6
6. NOMENCLATURE AND FUNCTIONS .................................. 7
Front ............................................................................................................................... 7
Rear................................................................................................................................ 8
7. SYSTEM CONFIGURATION .............................................. 9
8. OPERATIONS........................................................................... 9
8.1. Setting and Adjustment Methods............................................................................. 9
8.1.1. Infrared wireless microphone setting ............................................................. 9
8.1.2. Sound quality adjustment ............................................................................ 10
8.2. Operation ...............................................................................................................11
8.2.1. When making microphone announcements.................................................11
8.2.2. When broadcasting audio signals from the external equipment................. 12
8.2.3. When using an Assistive listening device ................................................... 12
9. CONNECTIONS ....................................................................13
10. WHEN MOUNTING IN A RACK............................................14
11. VOLUME CONTROLL COVER ...........................................14
12. TROUBLESHOOTING ........................................................15
13. SPECIFICATIONS.............................................................. 16
Accessories .................................................................................................................. 16
Optional products ......................................................................................................... 16

3
1. IMPORTANT SAFETY INSTRUCTIONS
• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.
• Do not use this apparatus near water.
• Clean only with dry cloth.
• Do not block any ventilation openings. Install in accordance with the manufacture's instructions.
• Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including
amplifiers) that produce heat.
• Do not defeat the safety purpose of the polarized or grounding-type plug.
A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a
third grounding prong. The wide blade or the third prong are provided for your safety.
If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
• Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and
the point where they exit from the apparatus.
• Only use attachments/accessories specified by the manufacturer.
• Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or
sold with the apparatus.
When a cart is used, use caution when moving the cart/apparatus combination to avoid
injury from tip-over.
• Unplug this apparatus during lightning storms or when unused for long periods of time.
• Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged
in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into
the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been
dropped.

4
These precautions apply only to the IR-802T Infrared Wireless Tuner.
for precautions regarding other infrared microphone system devices, please refer to the
instruction manual included with each device.
Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor personal injury, and/or property damage.
Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.
WARNING
CAUTION
2. SAFETY PRECAUTIONS
• Before installation or use, be sure to carefully read all the instructions in this section for correct and safe
operation.
• Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or
cautions regarding safety.
• After reading, keep this manual handy for future reference.
Safety Symbol and Message Conventions
Safety symbols and messages described below are used in this manual to prevent bodily injury and property
damage which could result from mishandling. Before operating your product, read this manual first and
understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.
WARNING When the Unit is in Use
• Should the following irregularity be found during
use, immediately switch off the power, disconnect
When Installing the Unit
• Do not expose the unit to rain or an environment
where it may be splashed by water or other liquids,
as doing so may result in fire or electric shock.
• Use the unit only with the voltage specified on
the unit. Using a voltage higher than that which is
specified may result in fire or electric shock.
• Do not cut, kink, otherwise damage nor modify
the power supply cord. In addition, avoid using the
power cord in close proximity to heaters, and never
place heavy objects -- including the unit itself -- on
the power cord, as doing so may result in fire or
electric shock.
• Avoid installing or mounting the unit in unstable
locations, such as on a rickety table or a slanted
surface. Doing so may result in the unit falling
down and causing personal injury and/or property
damage.
• Since the unit is designed for indoor use, do not
install it outdoors. If installed outdoors, the aging of
parts causes the unit to fall off, resulting in personal
injury. Also, when it gets wet with rain, there is a
danger of electric shock.
• The apparatus shall be connected to a mains socket
outlet with a protective earthing connection.
• L'appareildoit être branché à une prise d'alimentation
avec mise à la terre de protection.
the power supply plug from the AC outlet and
contact your nearest TOA dealer. Make no further
attempt to operate the unit in this condition as this
may cause fire or electric shock.
· If you detect smoke or a strange smell coming
from the unit.
· If water or any metallic object gets into the unit
· If the unit falls, or the unit case breaks
· If the power supply cord is damaged (exposure of
the core, disconnection, etc.)
· If it is malfunctioning (no tone sounds.)
• To prevent a fire or electric shock, never open nor
remove the unit case as there are high voltage
components inside the unit. Refer all servicing to
qualified service personnel.
• Do not place cups, bowls, or other containers of
liquid or metallic objects on top of the unit. If they
accidentally spill into the unit, this may cause a fire
or electric shock.
• Do not touch the power supply plug during thunder
and lightning, as this may result in electric shock.

5
When Installing the Unit
• Never plug in nor remove the power supply plug
with wet hands, as doing so may cause electric
shock.
• When unplugging the power supply cord, be sure to
grasp the power supply plug; never pull on the cord
itself. Operating the unit with a damaged power
supply cord may cause a fire or electric shock.
• The socket-outlet shall be installed near the
equipment and the plug (disconnecting device)
shall be easily accessible.
• When moving the unit, be sure to remove its power
supply cord from the wall outlet. Moving the unit
with the power cord connected to the outlet may
cause damage to the power cord, resulting in fire or
electric shock. When removing the power cord, be
sure to hold its plug to pull.
• Avoid installing the unit in humid or dusty locations,
in locations exposed to the direct sunlight, near the
heaters, or in locations generating sooty smoke
or steam as doing otherwise may result in fire or
electric shock.
• Avoid touching the unit’s sharp metal edge to
prevent injury.
• To avoid electric shocks, be sure to switch off
the unit’s power when connecting the IR-820SP
Infrared Wireless Speaker.
• To avoid damage to the unit and/or connected
equipment:
· Never connect the IR-820SP connection terminal
to a PC or LAN.
· Never short-circuit the terminal to ground.
• Be sure to follow the instructions below when rack-
mounting the unit. Failure to do so may cause a fire
or personal injury.
· Install the equipment rack on a stable, hard floor.
Fix it with anchor bolts or take other arrangements
to prevent it from falling down.
· When connecting the unit’s power cord to an AC
outlet, use the AC outlet with current capacity
allowable to the unit.
· Rack-mounting screws are not supplied with the
unit. Prepare them that are appropriate for the
equipment rack.
When the Unit is in Use
• Make sure that all volume controls are set to
minimum position before power is switched on.
Loud noise produced at high volume when power is
switched on can impair hearing.
• Use the specified AC adapter for the unit. Note that
the use of other adapter may cause a fire.
• If dust accumulates on the power supply plug or
in the wall AC outlet, a fire may result. Clean it
periodically. In addition, insert the plug in the wall
outlet securely.
• Switch off the power, and unplug the power supply
plug from the AC outlet for safety purposes when
cleaning or leaving the unit unused for 10 days or
more. Doing otherwise may cause a fire or electric
shock.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference with
radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/television technician for help.
F
CC
Compliance
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired
operation.
Any modifications made to this device that are not approved by TOA Corporation may void the authority
granted the user by the FCC to operate this equipment.
CAUTION

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3. GENERAL DE SCRIPTION
The Infrared Wireless Microphone System using this IR-802T is a PA system designed for use in the school
classrooms assuming that their size is about 10 m x 10 m (30 ft x 30 ft).
The IR-802T is a 2-channel Infrared Wireless Tuner employing a fixed frequency system with 3 AUX inputs.
It is combined with an infrared wireless microphone and an infrared wireless speaker to make up the infrared
wireless microphone system.
The infrared wireless microphone system eliminates problems with interference or eavesdropping, allowing
simultaneous use in adjacent school classrooms.
4. FEATURES
• Connected to the IR-820SP Infrared wireless speaker (with a built-in infrared receiver) using a single Category
5 straight through cable fitted with an RJ-45 connector, the IR-802T receives infrared signals and sends
mixed audio signals through the cable.
• Sets priority to the teacher microphone by muting the other student microphone when the teacher
microphone is used.
• Equipped with a feedback suppression function that helps avoid harsh squealing noise that would occur
when a microphone gets too close to a speaker.
• 3 AUX inputs for PC, TV/DVD, and MP3 audio player.
• The IR-802T’s output can be muted by telephone paging input signals.
• Equalizer control knobs for low-, middle-, and high-frequency outputs.
• Mixing output terminal for the ALD (Assistive Listening Device).
• Operated on 24 V DC using the supplied AC adapter (UL/cUL approved product).
• Frequency response optimized to reduce occurrence of acoustic feedback in a classroom whose typical size
is about 10 m x 10 m (30 ft x 30 ft).
5. HANDLING PRECAUTIONS
• The supplied power supply cord is designed for exclusive use with the IR-802T. Never use it with other
equipment.
• Install the IR-802T as far as possible from fluorescent lights, digital equipment, PCs and other devices that
generate high-frequency noise.
• The Infrared Wireless Microphone System prevents transmitted contents from being revealed to people
outside walls or other shields. However, since transmissions may be eavesdropped by malicious third parties,
it is strongly suggested that the user take responsibility for carrying out measures to prevent eavesdropping.
TOA assumes no responsibility for any damages that may be sustained without taking appropriate protective
measures against eavesdropping.
• When cleaning, be sure to first switch off the tuner’s power, then wipe with a dry cloth. If the tuner is extremely
dirty, use a cloth moistened in a neutral detergent. Do not use benzene, thinner, alcohol and chemically-
processed towels, as they can cause damage to the tuner’s components and parts.

7
2
3
4
5
6
7
8
9
1
6. NOMENCLATURE AND FUNCTIONS
[Front]
1. Power switch/indicator
To turn on the power, set this switch to the ON
position, causing the power indicator to light. To
turn off the power, set this switch back to the OFF
position.
2. Teacher’s microphone volume control
Adjusts the sound volume of the Teacher’s infrared
wireless microphone (to be set for Channel A).
Rotate the knob clockwise to increase and
counterclockwise to decrease the volume.
3. Reception indicator (Channel “A” or “1”)
Lights amber during reception of the infrared
wireless microphone set to Channel “A” in IR-802T
CU AQ and Channel “1” in IR-802T CU 1Q.
And also lights green during muting the student
microphone with IR-310M Y PQ
4. Student’s microphone volume control
Adjusts the sound volume of the Student’s infrared
wireless microphone(to be set for Channel B).
Rotate the knob clockwise to increase and
counterclockwise to decrease the volume.
5. Reception indicator (Channel “B” or “2”)
Lights amber during reception of the infrared
wireless microphone set to Channel “B” in IR-802T
CU AQ and Channel “2” in IR-802T CU 1Q.
6. Auxiliary input volume controls
Adjust the sound volume of each AUX input for PC,
TV/ DVD, and MP3.
Rotate the knob clockwise to increase and
counterclockwise to decrease the volume.
7. ALD (Assistive Listening d evice) output volume
control
Adjust the sound volume of the ALD output (8).
Rotate the knob clockwise to increase and
counterclockwise to decrease the volume.
8. ALD (Assistive Listening d evice) output terminal
–10 dB*, 10 kΩ, unbalanced, monaural mini jack.
Connect this terminal to the amplifier’s line input
terminal for the assistive listening system.
9. Mute indicator
Lights red when the rear-mounted Mute input
terminal (12) receives a telephone paging call from a
school intercom system or other paging equipment,
muting the infrared wireless microphone system.
* 0 dB = 1 V

8
10
11
12
13
14
15
16
17
DC24V
18
(Bottom Panel)
[Rear]
10. Cable clip
Run the AC adapter cable through this clip to
prevent its plug from being removed.
AC adapter plug
Cable clip
11. DC inlet terminal
Connect the supplied AC adapter.
12. Mute input terminal
Mutes the infrared microphone system when 25
V line signal from the telephone paging comes in.
13. MP3 input terminal
–10 dB*, 10 kΩ, unbalanced, stereo mini jack.
Accepts MP3 player output signals.
14. TV/DVD input terminal
–10 dB*, 10 kΩ, unbalanced, RCA jacks.
Accepts TV or DVD output signals.
15. PC input terminal
–10 dB*, 10 kΩ, unbalanced, stereo mini jack.
Accepts PC audio output signals.
16. Equalizer controls
Adjust low (bass), middle, and high (treble)
frequency response.
Rotate each knob clockwise to increase and
counterclockwise to decrease low, middle, or high
frequency output.
17. IR-820SP connection terminal
Connect this terminal to the IR-820SP Y 4Q
Infrared Wireless Speaker using a Category 5
cable (straight type).
Notes
• Use a Category 5 plenum cable (straight type)
when routing the cable in locations where
plenum-rated cable is required.
• Cross type cables cannot be used.
18. Marking Plate
Shows the Manufacturer's name, Model name,
and Electrical rating.
* 0 dB = 1 V
CAUTION
Toavoid damage to this tuner and/or connected
equipment:
• Never connect this terminal to a PC or LAN.
• Never short-circuit this terminal to ground.

9
B
7. SYSTEM CONFIGURATION
Category 5 cable (straight type)
IR-820SP Y 4Q
Infrared Wireless Speaker
IR-200M Y 4Q
Infrared Wireless Microphone
IR-802T CU AQ / IR-802T CU 1Q
Infrared Wireless Tuner
IR-310M Y PQ
Infrared Wireless Microphone
8. OPERATIONS
8.1. Setting and Adjustment Methods
8.1.1. Infrared wireless microphone setting
Set the channel selector switch of the Teacher's Infrared wireless microphone IR-310M Y PQ to Channel “A” or
“1” and that of the Student's Infrared wireless microphone IR-200M Y 4Q to Channel “B”, “1” or “2”.
[IR-310M] [IR-200M]
[Inside of the
battery cover
[Inside the battery case]
Note
(Rear)
Channel selector switch
(Front)
For details about the setting method, refer to the instruction manual supplied with the infrared wireless
microphone.
MB
-
15B
-
BK
Half Width Blank Panel
IR
-
200BT
-
2
Ni-MH Battery
for Infrared wireless microphones
(pack of 2)
IR
-
200BC
Battery Charger
Channel
selector switch
A

10
8.1.2. Sound quality adjustment
Adjust the sound quality when installing the IR-802T.
The example here shows the procedure to adjust the sound quality of the IR-802T using the infrared wireless
microphone.
Power switch
IR-200M
Infrared Wireless Microphone
IR-310M
Infrared Wireless Microphone
Step 1. Turn on the unit’s power switch.
The power indicator lights.
Step 2. Turn on the infrared wireless microphone’s power switch.
The reception indicator lights amber for the channel receiving a
signal.
Step 3. Adjust the volume control knob for an appropriate output sound.
Lights
Note
Output signal distortion is more likely to increase when the volume control knob is set beyond the “7”
position.
Step 4. Adjust the equalizer controls for an appropriate sound quality.
Each of low-, middle-, and high-frequency outputs can be individually adjusted.
Notes
• Sound quality of the infrared wireless microphones and each audio signal input to the AUX terminals
cannot be individually adjusted.
• Acoustic feedback tends to occur when the MID level is set relatively high.
2
Rear
4
3
1
IR
-
802T
2

11
IR
-
802T
8.2. Operation
8.2.1. When making microphone announcements
3 1
Power switch
IR-200M
Infrared Wireless Microphone
IR-310M
Infrared Wireless Microphone
Step 1. Turn on the unit’s power switch.
The power indicator lights.
Step 2. Turn on the infrared wireless microphone’s power switch.
The reception indicator lights amber for the channel receiving a
signal.
Step 3. Adjust the volume control knob for an appropriate output sound.
Lights
Notes
• Output signal distortion is more likely to increase when the volume control knob is set beyond the “7”
position.
• When a telephone paging call from a school intercom system or other paging equipment enters the
unit, the Mute indicator lights and the current broadcast being made from the unit is muted.
• Do not cover the microphone head with your hand(s), as doing so may cause acoustic feedback* to
occur.
* A phenomenon that squealing will occur when sound from the speakers enters the microphone, is
then re-amplified, and output through the speakers, forming a feedback loop.
[Priority function for teacher microphone]
Toggle on the priority function switch on IR-310M Y PQ
while speaking into the microphone.
Audio from the channel "B" in IR-802T CU AQ or
channel "2" in IR-802T CU 1Q as the student
microphone make mute.
And also, the reception indicator of the channel “A” in
IR-802T CU AQ or channel “1” in IR-802T CU 1Q as the
teacher microphone lights green.
2
2
IR-310M Y 4Q
Power switch
Priority function
switch

12
8.2.2. When broadcasting audio signals from the external equipment
Step 1. Turn on the unit’s power switch.
The power indicator lights.
Step 2. Turn on the external equipment's power switch, then reproduce audio signals.
Step 3. Adjust the corresponding Auxiliary input volume control for an appropriate output sound.
Notes
• Adjust each input volume control knob depending on the audio signal input level from the external
equipment.
• When a telephone paging call from a school intercom system or other paging equipment enters the
unit, the Mute indicator lights and the current broadcast being made from the unit is muted.
8.2.3. When using an Assistive listening device
3 1 2
Step 1. Connect the Assistive listening system to the ALD output terminal on the front panel.
Step 2. Turn on the unit’s power switch.
The power indicator lights.
Step 3. Adjust the ALD output volume control for an appropriate output sound.
Note
When a telephone paging call from a school intercom system or other paging equipment enters the
unit, the Mute indicator lights and the current broadcast being made from the unit is muted.
IR
-
802T
3
1
IR
-
802T

13
9. CONNECTIONS
Category 5 cable (straight type)
IR-820SP Y 4Q
Infrared Wireless Speaker
AC adapter plug
Cable clip
Run the AC adapter
cable through this clip to
prevent its plug from
being removed.
Front
Notes
• Connect the “TO IR-820SP” terminal to the
IR-820SP Infrared Wireless Speaker using
a Category 5 cable (straight type).
• Use a Category 5 plenum cable (straight
type) when routing the cable in locations
where plenum-rated cable is required.
• Cross type cables cannot be used.
• The cable length must not exceed 50 m
(54.68 yd).
To ALD (Assistive Listening
Device) equipment
IR-802T CU AQ / IR-802T CU 1Q
DC24V
PC
AC adapter
(accessory,
UL/cUL
approved
product)
TV/DVD
MP3 player
To AC mains
From a school intercom system or
other paging equipment
CAUTION
• To avoid electrical shocks, be sure to switch off the IR-802T’s power when connecting the IR-820SP.
• To avoid damage to the IR-802T and/or connected equipment:
· Never connect the “TO IR-820SP” terminal to a PC or LAN.
· Never short-circuit this terminal to ground.

14
10. WHEN MOUNTING IN A RACK
Use the optional MB-15B-BK Half Width Blank Panel when installing the unit in a 19" rack (1 unit size.)
The MB-15B-BK consists of all the rack-mounting parts such as brackets and screws as shown below.
Be sure to remove the rubber feet located on the unit’s bottom surface before mounting.
3 x 8 tapping screw
3 x 14 tapping screw*
IR-802T
Blank bracket
3 x 14 tapping screw*
Rack mounting bracket
5 x 12 rack mounting screw Fiber washer (for M5)
* Secure the brackets with the screws supplied with the MB-15B-BK after removing the case holding screws,
which are no longer used.
11. VOLUME CONTROL COVER
To prevent the accidental change of the setting of the volume controls, remove the knobs after setting them to
the desired position and attach the optional cover instead.
Volume control cover
(accessory)
Input volume control knob

15
12. TROUBLESHOOTING
Symptom Cause and Points to Check Remedy
The power indicator does not
light when the power switch is
turned on.
Power plug is unplugged from an
AC mains outlet.
Plug the power plug into an AC wall
outlet.
The power indicator flashes. The connection cable to IR-820SP
is possibly failed.
Confirm correctness of the connection
to IR-820SP and connection cable.
If faulty is found, connect correctly
or replace the cable with appropriate
one.
No signal received. Infrared wireless microphone’s
power switch is not set to ON.
Set the microphone’s power switch to
ON.
Infrared wireless microphone’s
battery has become discharged.
Replace the battery with a new one.
If a rechargeable battery is used,
recharge it.
The microphones’ channels are
incorrectly set.
Set the microphones’ channels
correctly.
No sound outputs. IR-802T is not connected to IR-
820SP properly.
Confirm correctness of the connection
to IR-820SP and connection cable. If
faulty is found, connect correctly or
replace the cable with appropriate
one.
External equipment is not connected
to IR-802T properly.
Connect correctly.
Sound is too faint to hear. IR-802T’s volume control is set to
too low a level.
Set the IR-802T’s volume control to
an appropriate volume level.
The volume control of the external
equipment is set to too low a level.
Set the volume control of the external
equipment to an appropriate volume
level.
Noise or strange (i.e. muddy)
sound is heard.
IR-820SP is installed in close
proximity to a device generating
radio noise or infrared light.
Install IR-820SP properly, referring
to “Installation precautions” for the
infrared wireless speaker.
Teacher’s microphone and student’s
microphone are set at the same
channel.
Set the microphones’ channels as
follows:
Teacher’s microphone: Channel A
Student’s microphone: Channel B
Short transmission distance. IR-820SP is not properly installed. Install IR-820SP properly.
Microphone’s volume controls
are not adjustable.
The microphones’ channels are
incorrectly set.
Set the microphones’ channels
correctly.
Acoustic feedback occurs
easily.
The microphone head is covered
with your hand(s).
Do not cover the microphone head
with your hand(s).
The MID level of the equalizer
controls is set relatively high.
Decrease the MID level of the
equalizer controls.

13. SPECIFICATIONS
Version IR-802T CU AQ IR-802T CU 1Q
Power Source 120 V AC, 50/60 Hz
(supplied AC adapter must be used)
Power Consumption 8 W (based on UL standards)
Max. 40.8 W (rated output at IR-820SP)
Receiving Frequency Teacher (Channel A): 3.100 MHz
Student (Channel B): 3.350 MHz
Teacher (Channel 1): 4.100 MHz
Student (Channel 2): 4.725 MHz
Receiver Sensitivity 50 dB or more, Signal to Noise ratio (40 dBµV input, 1 kHz modulation,
±4.8 kHz deviation)
Signal to Noise Ratio Tuner: 60 dB or more (60 dBµV input, 1 kHz modulation, ±4.8 kHz deviation,
A-weighted, Equalization: Centered)
AUX: 75 dB or more (A-weighted, Equalization: Centered)
Tone Squelch
Frequency
32.768 kHz
Input AUX PC: line, –10 dB*, 10 kΩ, unbalanced, stereo mini jack (internal mixing)
AUX DVD/TV: line, –10 dB*, 10 kΩ, unbalanced, 2P RCA jack (internal mixing)
AUX MP3: line, –10 dB*, 10 kΩ, unbalanced, stereo mini jack (internal mixing)
Mute: 25 V line signals of telephone paging from a school intercom
system
Output ALD (Assistive Listening Device): line, –10 dB*, 10 kΩ, unbalanced, monaural
mini jack
Speaker: RJ45 (dedicated terminal for IR-820SP
connection)
Equalization High: ±10 dB at 10 kHz
Mid: ±10 dB at 1.3 kHz
Low: ±10 dB at 100 Hz
Feedback Suppression Valid for mixing out of 2 infrared wireless microphones
Mute Function Muted by 25 V line signals
LED Indicator Power (green) x 1, Infrared reception (yellow) x 2, Mute (red) x 1
Operating Temperature –10 to +50 °C (14 to 122 °F)
Operating Humidity 90 %RH or less (no condensation)
Finish Panel: Aluminium, black
Case: Steel plate, black
Dimensions 210 (w) x 46 (h) x 312 (d) mm (8.27" x 1.81" x 12.28")
Weight 1.8 kg (3.97 lb)
* 0 dB = 1 V
Note: The design and specifications are subject to change without notice for improvement.
• Accessories
AC adapter (UL/cUL approved product, DC cord length: 1.8 m or 5.91 ft)................1
AC power cord (2 m or 6.56 ft) ..................................................................................1
Volume control cover.................................................................................................6
Removable terminal plug (2 pins)..............................................................................1
• Optional product
MB-15B-BK Half Width Blank Panel
133-07-00124-00
www.toacanada.com
TOA Canada Corporation