Chiayo IRX2 User manual

IRX2
Infrared Wall Mounted Amplifier System
ISO 9001:2008
GREEN PRODUCT
Operation manual

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Thank you for purchasing our infrared wireless microphone system. Please be sure to read the
user's manual thoroughly and keep it for future reference.
Cautions
Do not cover the infrared emitter area of the wireless microphone or the surface of the infrared
sensor.
Do not have the microphone near the speaker to prevent from howling.
Do not replace the battery when power is on.
Do not install near heat source or in a place subject to direct sunlight, excessive dust,
mechanical vibration or shock.
Do not use both channels at same time because it may cause abnormal operation.
Parts and functions of amplifier
1. External sensor connectors. Allows 3 external sensors to be used with this system.
2. Mic In volume control
3. Mic In
4. Aux In. Allows 3 audio sources to apply to this system.

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5. Line Out
6. Audio output connector for assistive listening device. The volume level can be adjusted
individually via the volume knob below.
7. Emergency Override (EO). When this function is activated, all operation of this unit will be
stopped temporarily, emergency audio source will be amplified through this input. This
function is specifically designed for emergency or public broadcast.
8. Sensitivity setting of emergency override (EO). Clockwise to increase the sensitivity.
9. Volume setting of EO. Clockwise to increase the volume.
10. Main speaker out (R/L)
11. Power output. Offers power for connected microphone charger (HC-40).
12. DC in
13. IR2 volume control
14. IR1 volume control
15. Aux In volume controls. Individually for 3 audio inputs.
16. Line Out volume control
17. Volume control of assistive listening device
18. 3-band tone controls. Individually for bass, middle and treble.
19. IR2 reception indicator
20. IR1 reception indicator
21. Audio indicator
22. Power indicator
23. Power switch
24. Lock hole
Operating the system
First, find the best position with a wide view of the room to install the receiver.
Plug adaptor into nearby power outlet, and then connect the DC plug of adaptor to the amplifier.
Connect the amplifier to the speaker.
Turn on the amplifier and speaker.
Switch on the transmitter and the channel indicator(s) will light up.
Adjust the volume control of amplifier to comfortable level.

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Handheld IR Microphone IWH-201/IWH-301
Parts and functions
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1. Grille cover.
2. Status LED: Bicolor LED will glow when switch is put to ON.
Green : Battery is full and microphone is in normal mode.
Red : Battery is weak and will shut off soon. Please charge the battery.
3. Power switch.
4. Battery compartment.
5. Infrared emitter with charging contacts. IR ray radiates from here. Do not block or hold this
part.
6. Sensitivity control. Clockwise to increase sensitivity level. Factory preset is max level.
7. A-B channel selector for IWH-301. LO-HI power selector for IWH-201.
This switch changes transmitting intensity of infrared ray. At Lo position transmitting distance
is approximately 20 meters and at Hi position 30 meters.
If transmission system may pick up some noise at Lo position, it means the transmitting
distance may be insufficient. Please switch to Hi position. Factory setting is Lo position.
At Hi power operation, operating time is approx. 4 hours. (About half time of Lo power
operation.)
Battery installation/charging
First, remove the battery cover and make sure the power switch is OFF before installing or
recharging the batteries.
This microphone has a built-in detecting mechanism on the compartment to decide whether to
charge the battery. Only under contact with peeled-off negative will the charging be functioning.
Users are highly recommended to use our standard rechargeable NiMH batteries to prevent
possible damages to the microphone caused by battery misuse.
DO NOT recharge batteries other than 1-cm off-peeled negative NiMH ones.
↓One NiMH battery
↑Two Alkaline batteries or 1cm-negative-peeled
AA NiMH batteries

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Handheld/Pendant IR Microphone IWH-401
Parts and functions
1. Cartridge screen.
2. Infrared emitter. IR ray radiates from here. Do not block or hold this part of the body.
3. Anti-rolling color ring.
4. Status LED: Bicolor LED will glow when switch is put to ON :
Green : Battery is full and microphone is in normal mode.
Red : Battery is weak and will shut off soon. Please charge the battery.
5. Power switch Slide to turn microphone on or off.
6. Charging contact, workable with HC-40 charger.
Please note: This microphone has a unique inbuilt safety feature to protect itself from misuse
during recharging. It incorporates a special charging function which will only operate when the
PVC cover of the battery’s negative is removed by 1cm. Any rechargeable batteries used
must be dealt in this way for a safe charging.
7. Battery compartment. Turn the battery cover counterclockwise and pull out. Make sure the
microphone is turned off when installing or replacing batteries. And then install the new battery
according to its correct polarity. IWH-401 uses only 1 AA battery to operate.
8. Channel selector. A stands for 2.08MHz and B stands for 2.54MHz.
9. Sensitivity control. Clockwise to increase sensitivity level. Factory preset is max level.
10. Pendant holder. Place IWH-401 through this holder and it can be used as a pendant
microphone.
Making changes to settings in IWH-401
Battery installation/charging
Rotate off the battery cover and install 1 AA battery. Please make sure the battery type is
rechargeable if it's to be charged by the charger. Its rechargeable battery can be charged by HC-
40 without being removed from the microphone. If the microphone is to be left unused for a long
period of time, please remove the battery until next use.
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One Alkaline battery or
1cm-negative-peeled AA NiMH battery
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Bodypack IR Transmitter IWM-202
Parts and functions
1. Power high/low switch
2. Battery compartment
3. A-B channel selector
4. Power on/off
5. Lavalier or headset microphone input
6. Power indicator
7. Infrared emission source
8. Volume control
Operating procedures
1. Open battery cover and put 2*AA alkaline batteries.
2. Connect with lavalier or headset microphone input.
3. Power the transmitter to make the power indicator turn green. If red or remaining off, it means
power shortage or no power. Please replace with new batteries. Generally two alkaline
batteries can last 5~6 hours.
4. Adjust amplifier volume control.
5. Please ensure that the infrared emitter is never covered. This is a ‘line-of-sight’connection
which, if covered, will affect the microphone signal.
Custom made rechargeable Ni-MH battery
1. This battery is exclusively designed for the infrared wireless microphone.
2. Be sure to charge the attached battery before use.
3. Do not recharge the battery until it is out of power.
4. Ensure the charging terminal always remains clean.
5. Do not repeatedly recharge the battery before full discharge, if you repeat above, battery life
will be shortened.
6. Battery life is around one year or 500 recharge cycles under normal operation. Once noticing
that operating time becomes shorter from full charging, the battery is exhausted.
7. Replace with new batteries. (Be sure to use exactly same type as attached.)
Battery operating time
Continuous operating time of fully charged NiMH batteries is as below.
position of power selector
Low
High
operating time
6 hours
4 hours
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Bodypack IR Transmitter IWM-302
Parts and functions
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1. Volume control
2. Power on / Battery-status indicator
3. Power switch
4. Mini XLR connector
5. Infrared emitter
6. Cover-release button
7. Charging contacts
8. Gain control (MT, low impedance)
9. Transmission-strength selector
10. Channel selector
Making changes to settings in IWM-302
Channel changing
First open the cover of IWM-302's battery compartment by pressing its release buttons on both
sides. There are 2 channels for selection, namely "A" and "B", either can be chosen by switching
this selector.
Gain control
Low-impedance "MT" gain control is situated inside the battery compartment. Adjustment of Gain
control will allow the best output signal level whilst helping to avoid feedback or distortion of
sound. It can be adjusted by using a small screw driver to rotate till a desired audio output level
has been selected.
Battery installation
To install the batteries, first open the battery compartment by pressing the release buttons on
both sides of the IWM-302. Batteries used are 2 pcs of NiMH type (rechargeable) or Alkaline
type (not rechargeable). When inserting batteries, please place them according to the correct
polarity.
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Pendant IR Transmitter IWM-402
Parts and functions
1. Mic in (Φ2.5mm). Headset or lavalier microphone is ok.
2. Power switch.
3. Charging port.
4. Charging contact, workable with HC-40 charger.
This transmitter has a unique inbuilt safety feature to protect itself from misuse during
recharging. It incorporates a special charging function which only operates when the PVC
cover of the battery’s negative is removed by 1cm. Any rechargeable batteries used must be
used in this way for a safe charging.
5. IR emitter area. IR ray radiates from here. Do not block or hold this part of the body.
6. Status LED: Bicolor LED will glow when switch is put to ON :
Green : Battery is full and transmitter is in normal mode.
Red : Battery is weak and will shut off soon. Please charge the battery.
7. Mute. Press this button to mute/resume audio transmission.
8. Volume control.
9. Line in (Φ3.5mm), for external audio input.
10. A-B channel switch.
11. Battery compartment. IWM-402 uses only 1 AA battery to operate.
Making changes to settings in IWM-402
Channel changing
First open the cover of IWM-402's battery compartment on its rears. There are 2 channels for
use and can be changed by sliding the A-B channel switch.
Battery installation/charging
To install the batteries, first open the battery compartment on IWM-402's rear. It uses only 1 AA
battery to operate and accepts both NiMH rechargeable and Alkaline batteries. If rechargeable
battery is being used, it can be charged by HC-40 charger.
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One Alkaline battery or
1cm-negative-peeled AA NiMH battery

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Connections
Installing the external sensor IS-20A (wall/ceiling-mount type)
1. Covering range of infrared rays.
2. Find the best position for sensor to be mounted as illustrated.
3. How to mount the infrared external sensor.
External sensor
IS-20A
IRX2 amplifier
or
speaker
AC adaptor
fixing holder with a screw
angle-adjustable shaft
wall mounting
ceiling mounting
IS-30A
speaker

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(a) Mount (Refer to illustration) the FIXING HOLDER (wall or ceiling) by using a screw provided
or two double-coated tapes
(b) Find the best position with wide view of the room. Mount the sensor along with the FIXING
HOLDER on the wall or ceiling.
NOTE: The LED of infrared sensor will turn red after power on. If not, please consult with your
nearest dealer.

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Installing the external sensor IS-30A (ceiling-mount type)
A. In an ordinary space such as a classroom
1. Locate the IS-30A sensor in the middle
of the ceiling (as illustrated in right
picture).
2. Connect the sensor cable to the
receiver.
3. Turn on the IR system and amplifier
then operation can be started.
B. In a larger space such as a fitness center
1. Locate 2 or 3 IS-30A sensors on the
suggested positions on the imaginary
catercorner of the ceiling (as illustrated
in below picture).
2. Connect all sensor cables to the
receiver.
3. Turn on the IR system and amplifier
then operation can be started.

CHIAYO ELECTRONICS CO.,LTD.
Http://www.chiayo.com.tw Email: [email protected]
Office: 30, Lane 27, Section 4, Jen-Ai Road, Taipei 10685, Taiwan / Tel: [phone] / Fax: [phone]
Factory: 88, Chung-Hsiao Street 2, Chiayi 60080, Taiwan / Tel: [phone] / Fax: [phone]
12I1278