SMART Audio 400 User manual

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SMARTAudio 400
classroom amplification system
USER’S GUIDE
FOR SCA-400

smarttech.com/kb/171144
Important information
Federal Communication Commission interference statement
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.
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used
in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum distance of 20 cm
between the radiator and your body. This transmitter must not be co-located or operated in
conjunction with any other antenna or transmitter.
Trademark notice
SMARTBoard, smarttech, the SMART logo and all SMART taglines are trademarks or registered trademarks of SMARTTechnologiesULC in the U.S. and/or other
countries. All third-party product and company names may be trademarks of their respective owners.
Copyright notice
© 2017SMARTTechnologiesULC. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system or
translated into any language in any form by any means without the prior written consent of SMARTTechnologiesULC. Information in this manual is subject to change
without notice and does not represent a commitment on the part of SMART.
This product and/or use thereof is covered by one or more of the following U.S. patents:
www.smarttech.com/patents
05-2017

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Contents
Important information 2
Introduction 4
Using the teacher microphone 4
Using the student microphone 7
Using the SMARTAudio 400 receiver 9
Using input devices 11
Maintaining the microphones 12
Pairing the microphones 12
Troubleshooting SMARTAudio 400 13

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Introduction
The SMARTAudio 400 classroom amplification system provides high-quality audio amplification
for classrooms. SMARTAudio is the control center for the wireless microphone and speakers. The
system comes with a teacher microphone and optional student microphone. The receiver receives
audio signals and translates them into crystal-clear sound through the speakers. A variety speaker
options are available, including wall mounted speakers (SBA-150) and ceiling mounted speakers
(SBA-150c).
Using the teacher microphone
Control the input device’s volume directly from the teacher microphone. The teacher microphone
is ideal for large spaces. For more information see Acoustics in the SMART installation standards
(smarttech.com/kb/171035).
About the Teacher microphone
No. Function Description
1 OTHER LEDindicates that the volume buttons control the student
microphone.
2 LINE LEDindicates that the volume buttons control the auxiliary
audio source.
3 CHG LEDindicates charging status. See Charging the microphone
on page12.
4 UP and DOWN buttons Controls volume for the selected audio source.

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No. Function Description
5 REC LEDindicates that the microphone is paired with the receiver.
6 PWR/ MUTE button lTurns on microphone
lMutes microphone
7 SELECTbutton Selects an audio source.
8 BATT LEDindicates battery charge level. See About the teacher
microphone LEDs below.
9 OWN LED indicates that the volume buttons control the teacher’s
microphone.
10 Microphone [N/A]
11 MICIN Connect an external microphone (for example, a lapel or
headset microphone). This mutes the internal microphone on
the teacher microphone.
12 Mini USBA receptacle Connects the USB power cable to charge the microphone.
13 AUDIOIN Connects an external audio device using a a 3.5 mm audio
cable.
About the teacher microphone LEDs
The BATT and CHG LEDs provide status and troubleshooting information for the teacher
microphone.
BATT LED status Description
Solid green Microphone is on.
Flashing green or flashing
orange
Pairing with receiver or microphone is muted.
Solid yellow Battery is low.
Flashing yellow Microphone is out of range of the receiver.
Solid red Battery is depleted.
Flashing red Pairing error. See Resolving issues with the microphones on
page13.
CHG LED status Description
Solid Battery has finished charging.
Flashing Battery is charging.
Flashing rapidly There has been a charging error.

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Using the teacher microphone
TIP
lWear the microphone 4–6" (10–15 cm) below your chin.
lCharge the microphone every night.
lSpeak at a normal conversational volume.
lDon’t turn up the speaker volume too high. If you can hear your voice, it’s too loud. Have
another adult in the room help you set the volume.
To turn the teacher microphone on
NOTE
lThe power on sequence occurs within 5 seconds
lThere isn’t an audible beep when you turn on the microphone.
1. Press and hold the PWR/MUTE button for at least three seconds.
2. BATT LED briefly lights green.
3. BATT LED flashes orange while the microphone pairs.
4. TheBATT LED lights solid green.
To turn the teacher microphone off
Press and hold the PWR/MUTE button for at least three seconds.
To mute the teacher microphone
Press the PWR/MUTE button.
If the microphone is muted for more than five minutes, the microphone turns off to conserve
battery.
To adjust the volume of the teacher microphone
1. Press the SELECT button until the OWNLED is lit.
2. Use the UP or DOWN buttons to adjust the volume.

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To adjust the volume of the student microphone from the teacher microphone
1. On the teacher microphone, press the SELECT button until the OTHERLED is lit.
2. Use the UP or DOWN buttons to adjust the volume.
Using the student microphone
The student microphone encourages student participation and facilitates communication between
students and between students and the teacher.
About the student microphone
No. Function Description
1 CHG LEDindicates charging status. See About the student
microphone LEDs on the next page.
2 BATT LED indicates the battery charge level. See About the
student microphone LEDs on the next page.
3 TALK button Turns the microphone on while the button is pressed.
4 TALK switch Turns the microphone on.
5 PWR/LINK button Press this button to initiate pairing with the receiver.
6 3.5 mm receptacle Connects an external audio device using a a 3.5 mm
audio cable.
7 Mini USBA receptacle Connects the USB power cable to charge the
microphone.

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About the student microphone LEDs
The BATTand CHGLEDs provide status and troubleshooting information for the student
microphone.
BATT LED status Description
Solid green Microphone is on.
Flashing green or flashing
orange
Pairing with receiver or microphone is muted.
Solid yellow Battery is low.
Flashing yellow Microphone is out of range of the receiver.
Solid red Battery is depleted.
Flashing red Pairing error. See Resolving issues with the microphones on
page13.
CHG LED status Description
Solid Battery has finished charging.
Flashing Battery is charging.
Flashing rapidly There has been a charging error.
Using the student microphone
To turn the student microphone on or off
1. Press and hold the TALK button or slide the switch until the BATT LED briefly lights green.
2. BATT LED flashes orange while the microphone pairs.
3. TheBATT LED lights solid green.
To turn the student microphone off
Slide the switch down.
To use the microphone
Press and hold the TALK button while talking.
OR
Slide the switch up to keep the microphone on.

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To adjust the volume of the student microphone
1. On the teacher microphone, press the SELECT button until the OTHERLED is lit.
2. Use the UP or DOWN buttons to adjust the volume.
Using the SMARTAudio 400 receiver
The receiver for the SMARTAudio 400 classroom amplification system receives an audio signal
and transmits it to the speakers. Pairing the microphones and the receiver is easy, and the receiver
doesn’t allow unpaired microphone audio to bleed into the speaker system. The LEDs make it
easy to tell at a glance if microphones are properly connected.
About the receiver
No. Function Description
1 MIC1 LED indicates that a microphone is paired.
2 POWER LED indicates the power status.
3 MIC2 LEDindicates that another microphone is paired.
4 LINK LED indicates the pairing status.
5 Link button Press the Link button to pair the receiver with the
microphones. See Pairing the microphones on page12
for more information.
6 Dip switches See Troubleshooting SMARTAudio 400 on page13 for
more information.

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No. Function Description
7 LINEIN L/R Connects an interactive display or interactive flat panel
using a stereo 3.5 mm cable. See Connecting a
SMARTBoard interactive display or SMARTBoard
interactive flat panel to the receiver on the facing page
for more information.
8 Power Connects the power cable.
9 Speaker Connects the wall speaker or ceiling speakers to the
receiver.
Receiver LED status
MIC 1 LED status Description
Solid green Microphone is activated on that channel.
Solid orange Feedback blocker is on.
NOTE
To turn off the feedback blocker, turn dip switch 5 off and turn
the receiver off and back on.
Solid red System error. Turn the microphone off and then back on to clear
the error.
POWER LED status Description
Solid green Receiver is on.
MIC 2 LED status Description
Solid green Microphone is activated on that channel.
Solid orange Feedback blocker is on.
Solid red System error. Turn the microphone off and then on to clear the
error.
LINK LED status Description
Solid green Microphone is paired with the receiver.
Flashing yellow Receiver is attempting to pair with a microphone.

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Connecting a SMARTBoard® interactive display or SMARTBoard
interactive flat panel to the receiver
To connect a SMARTBoard interactive display or SMARTBoard interactive flat panel to the
receiver
1. Using a 3.5 mm stereo cable, connect the cable to the receiver’s LINE INL/R port.
2. Connect the cable to the display or board. See the display’s installation and maintenance
guide or the board’s administrator’s guide for more information.
Using input devices
You can connect a mobile device, MP3 player or computer to SMARTAudio 400. Using a 3.5 mm
audio cable, connect your device to the AUDIO INreceptacle on the microphone or receiver.
Connecting a device to the teacher or student microphone
To connect a device to the teacher or student microphone
NOTE
Set the device’s volume to 80–90% of its maximum volume. Then use the volume controls on
the teacher or student microphone.
1. Using an audio cable that with 3.5 mm stereo plugs on both ends, connect the cable to the
AUDIO INreceptacle on the microphone.
2. Connect the cable to the headphone receptacle on the mobile device, MP3 player or
computer.
3. Use the volume control on the mobile device, MP3 player or computer to set the playback
volume.
OR
If the LINELED is lit, use the microphone’s volume controls to adjust the volume.
Adjusting the volume of input devices
1. On the teacher microphone, press the SELECT button until the LINELED is lit.
2. Use the UP or DOWN buttons to adjust the volume.

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Maintaining the microphones
The teacher and student microphones contain a rechargeable lithium-ion battery. Charge the
microphones every night and during the weekend.
Charging the microphone
To charge the teacher or student microphone
1. Connect the wall charging adapter to a power outlet.
2. Connect the USB cable to the adapter.
3. Connect the USB cable to the microphone.
4. The CHG LED flashes red while the microphone charges.
5. The CHG LED lights solid red when the microphone is fully charged.
Cleaning the microphone
To clean the teacher or student microphone
Spray skin-safe disinfectant on a cloth and use the cloth to clean the microphone.
CAUTION
lMake sure no cleaning liquid enters the microphone.
lTake care when wiping the silk screened labels.
Pairing the microphones
To check if the microphone is paired to the receiver, press the PWR/MUTE button for 1 second on
the microphone. If the BATT LED flashes green, the microphone is paired. If the BATT LED flashes
in another color, turn off the microphone and use the following instructions to pair the microphone
to the receiver.

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Pairing the teacher microphone
To pair the teacher microphone
1. If the teacher microphone is turned on, turn it off by pressing and holding the
PWR/MUTEbutton for three seconds.
2. On the receiver, press the LINK button. The LINK LED flashes yellow.
3. On the teacher microphone, press and hold the PWR/MUTE and REC buttons.
A beep is heard through the speakers.
The BATTLED on the microphone and the LINKLEDon the receiver light green.
Pairing the student microphone to the receiver
To pair the student microphone
1. If the student microphone is turned on, turn it off by sliding the TALK switch.
The BATT LED is unlit.
2. On the receiver, press the LINK button. The LINK LED flashes yellow.
3. On the student microphone, press and hold the PWR / LINK button and the TALK button.
A beep is heard through the speakers.
The BATTLED on the microphone and the LINKLEDon the receiver light green.
Troubleshooting SMARTAudio 400
Use the information below to troubleshoot your issues for the SMARTAudio 400 classroom
amplification system.
Resolving issues with the microphones
Issue Solutions
The microphone is turned on and
paired to the receiver, but MIC1 or
MIC2 LEDis not lit.
Check the pairing again. See Pairing the
microphones on the previous page.

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Issue Solutions
The BATTLED is flashing green or
orange.
lMicrophone is muted.
Unmute the microphone.
lThe microphone is pairing to a receiver.
Wait for the microphone to finish pairing with the
receiver.
The BATTLED is flashing yellow. Microphone is out of range of the receiver. Move
back into range.
The BATTLED is flashing red. There was a pairing error with the receiver. Try
pairing the microphone again. See Pairing the
microphones on page12.
Resolving issues with audio
Issue Solutions
All components are turned on and the
microphones are paired, but there is
no audio.
lCheck for audio from audio port first, and then from
mic port.
If the audio is working from both ports and but not
from the internal mic element, the microphone may
be defective. Contact SMART for a replacement.
lCheck the connection from the receiver to the
speakers. If the speakers are firmly and properly
connected and there is still no audio, contact SMART
regarding the receiver.
The audio is distorted lIf a device is connected to the teacher or student
microphone using the AUDIOINport, set the
device’s volume to 80–90% of its maximum volume.
Then use the volume controls on the teacher
microphone to adjust the volume.
lTurn on dip switch 8 on the receiver.
lTest the microphone from the malfunctioning system
with a properly functioning system. If the audio is still
distorted, contact SMARTregarding the
microphone.
lTest a microphone from a properly functioning
system with the malfunctioning system. If the audio is
still distorted, contact SMART regarding the
receiver.

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Issue Solutions
There is audio feedback.
NOTE
Feedback occurs when the
microphone picks up audio from
the speakers and transmits it to the
speaker again in a loop. Feedback
sounds like an intermittent high-
pitched squealing or burst of
sound, and it can occur when you
stand in a particular spot (especially
if the microphone is very close to
the speakers) or randomly in a
room.
Feedback is distinct from a buzzing
or humming, which is a constant low
noise that doesn’t necessarily
change when the microphone used
or turned on or off.
lVolume is set incorrectly. Set the volume while
standing beneath the speaker with the microphone.
TIP
Have someone else in the room help determine if
the volume is not loud enough.
lDo not stand directly beneath the speakers. This can
cause feedback.
TIP
Have someone else in the room help determine if
the volume is not loud enough.
lTurn on dip switch 5 on the receiver. This will mute
your microphone if a feedback loop starts.
There is an audible hum. lVerify that the cables are connected properly.
lThe speaker cables may be running parallel with
power lines.
lReplace any input cables that might be too long or
are unshielded.
The speakers are making a crackling
sound.
The speakers and the receiver aren’t connected
properly.
oIf the crackling sound is coming from all the
speakers, check the connection at the back of
the receiver.
oIf the crackling sound is coming from only one
speaker, check the connection at the back of
the speaker.
Audio is interrupted lFlip dip switch 8 on the receiver to boost the signal.
lRemove metallic obstructions between the receiver
and the microphones.

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Resolving issues with power
Issue Solutions
The receiver isn’t receiving power. lTest the outlet with a device known to be working
correctly.
lTry a different outlet.
lIf neither solution resolves the issue, contact SMART.
Resolving issues with battery charging
Issue Solutions
The microphone isn’t charging. lMake sure the charging cable is inserted correctly in
the AC adapter and in the microphone.
lMake sure the cable is oriented correctly in the
microphone. The arrow should face out towards the
microphone.

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