LightSpeed 820iR User Manual

SPEAKER OUTPUTS

250 400

700

1K 1K4

2K5

4K

6K3

+10

0

-10

AUDIO INPUT

CHARGERS

DC

POWER

TV/VCR

CD/DVD

L L

R

R

24V
DC

SENSOR INPUT

SENSOR

SHORT

2.06/2.54

POWER

A VOLUME

B VOLUME

TV/VCR CD/DVD

ASSISTIVE LISTENING

IR

IR

AF

AF

WIRELESS MICROPHONE VOLUME

AUDIO INPUT VOLUME

ALD VOLUME

LES 820iR Classroom Amplification System

ASSISTIVE LISTENING

ALD VOLUME

POWER

A VOLUME

B VOLUME

TV/VCR CD/DVD

ASSISTIVE LISTENING

IR

IR

AF

AF

WIRELESS MICROPHONE VOLUME

AUDIO INPUT VOLUME

ALD VOLUME

LES 820iR Classroom Amplification System

ASSISTIVE LISTENING

ALD VOLUME

POWER

A VOLUME

B VOLUME

TV/VCR CD/DVD

ASSISTIVE LISTENING

IR

IR

AF

AF

WIRELESS MICROPHONE VOLUME

AUDIO INPUT VOLUME

ALD VOLUME

LES 820iR Classroom Amplification System

USING YOUR MICROPHONE

LT - 71

LT- 71

A CH B

OFF

ON

LT- 71

250 400

700

1K 1K4

2K5

4K

6K

+10

0

-10

OFF

OFF

ON

VOL.
ADJ.

ALD OUT

AUX OUT

VOL.
ADJ.

LT - 71

LT- 71

250 400

700

1K 1K4

2K5

4K

6K3

+10

0

-10

AUDIO INPUT

TV/VCR

CD/DVD

L L

R

R

SENSOR INPUT

SENSOR

SHORT

REMOVE FROM CHARGER

Lightspeed microphones require 8 hours to fully charge.

820iR

Classroom Audio System

CHANNEL SELECT

Two microphones cannot operate on the same channel.

POSITION MICROPHONE

The position of
the microphone
is critical for
proper volume
adjustment.

Grip the
barrel of the
handheld in
the center
section.

TURN ON MICROPHONE

CONNECTING MULTIMEDIA

Interface seamlessly with computers, MP3, DVD, TV and other
audio devices.

Use your
microphone
to remotely
connect audio to
your system

3.5mm
plug

3.5mm
plug

RCA

plug

RCA plug

RCA

plug

SET VOLUME

If necessary adjust volume so you can barely hear your own voice.

REMEMBER: Volume set too high will result in system feedback (squealing).

TURN OFF AND
RETURN TO CHARGER

LIGHTSPEED TECHNOLOGIES, INC. | WWW.LIGHTSPEED-TEK.COM | 800.732.8999

ASSISTIVE LISTENING AND RECORDING

Send audio directly to an ALD or to a digital recorder
for lesson capture and re-broadcast on school
websites.

1

3

2

3.5mm
plug

ALD Transmitter

Always
connect
to the
MIC or
AUX
input
jack

Recording

Device

TROUBLESHOOTING GUIDE

NOTE! Most problems are directly related to low

battery power. Please run through the “Battery
Check” items rst. For remaining troubleshoot­ing, use known good, fully-charged batteries.

Battery Check

•Conrm batteries are charged

each night.

•Conrm proper batteries are

used. The REDMIKE requires the
Lightspeed BA-NH2A27 sensing
battery for proper charging.

•Make sure the REDMIKE is turned off

while charging so that it will attain
a full charge. Full charge will last
seven hours.

•Inspect the battery contacts. Clean

and adjust if necessary.

Hearing Static

•Ensure sensor is in optimum

location (refer to sensor placement
in manual). A single sensor will
cover a 1600 sq. ft. enclosed
classroom.

•Ensure that no other REDMIKE/

LT71/HM70 is operating on the same
channel.

•If an external microphone is in

use, try another REDMIKE that is
known to be working (if available) to
isolate the problem. If static persists
with “known good” microphone,
the REDMIKE input jack will need
service.

Low Volume or Feedback

• Ensure microphone is positioned

appropriately, just below the
collar bone.

•Check volume level on the amplier.

If the volume is too high, feedback
will occur. Adjust accordingly.

No Sound From Speaker

•Turn the 820iR on. Conrm that the

POWER light located on the power
switch is on.

•Conrm signal is being received at

the 820iR. The IR signal light will be
lit (RED) indicating a signal is being
received.

•Conrm that REDMIKE is turned on.

There will be a BLUE LED on
the microphone to indicate it is
powered on.

820iR

Classroom Audio System

Contact us:

LIGHTSPEED TECHNOLOGIES

11509 SW HERMAN ROAD | TUALATIN, OREGON 97062

TOLL FREE: 800.732.8999

PHONE: [phone] | FAX: [phone]

WWW.LIGHTSPEED-TEK.COM

TIPS ON CLASSROOM AUDIO

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

1

2

3

4

Five-year Limited Warranty

Lightspeed Classroom Audio 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 warranty period.

1. Warranty on infrared microphones is FIVE (5) YEARS.

2. Warranty on Lightspeed rechargeable batteries, all external cables and wires provided

by Lightspeed is one (1) year.

3. Prepaid shipping labels are provided by Lightspeed factory or an authorized warranty

service center for warranty repairs.

4. Warranty does not extend to nish, appearance items, or malfunctions due to abuse

or operation other than specied 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.

Our Service Department (800.732.8999, 5 a.m. – 5 p.m., PST)

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.

will handle all your repair/replacement needs.

MN0008US01-0

LIGHTSPEED TECHNOLOGIES, INC. | WWW.LIGHTSPEED-TEK.COM | 800.732.8999