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Don’t miss a single sound. Listen.
Sound eld applications are areas where audio needs to be ampli ed for people to hear
better. This can be in a classroom, meeting room, training center or theatre. Studies
have shown that by boosting the audio levels of normal voices, you not only increase
retention by as much as 30%, but also reduce potential for voice strain and fatigue.
Wherever a large PA system is impractical, a Sound eld FM solution is likely the answer.
Listen’s line of Sound eld FM products deliver a carefully tuned system of components
that makes the process of specifying, ordering and using the system simple and straight
forward. A Listen FM system functions like a low power radio station that broadcasts
sound to receivers within range of the transmitters. This system is an easy way to deliver
interference-free sound to groups of all sizes ensuring that all participants, hear the
message clearly.
Don’t miss a single sound. Listen.
Classrooms
Listen’s easy to use and
ergonomically designed
equipment can ll a classroom
with crisp clear sound. This allows
the teacher to convey information
without voice strain or fatigue and
ensure that each student has the
opportunity to hear the message.
Employee Training
Your most vital assets are your employees and their
contribution to your organization. For your employees to be
as productive and e cient as possible their training is critical.
By providing your training center with a Sound eld system,
you can ensure that your sta understands and processes the
information more e ectively, allowing them to contribute
more to your organization.
Meeting Rooms
When you assemble your company for monthly meetings, you
want to make sure that it runs smoothly. An important part of
this e ciency is that each participant can hear what is being
presented. A Listen system will amplify your speaker’s voice
above background noise giving you the full con dence of your
employees.
Over ow Areas
Be prepared in those instances when you call an
impromptu sta meeting and not everyone can t into
your conference room. A Listen system allows you to
provide an over ow area to make sure your entire sta
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can hear what is being presented.
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Listen Sound eld FM System
Studies show that students learn up to
30% more in classes with audio
ampli cation. This means that the
classroom experience can be improved
for both teachers and students with
sound eld reinforcement. Vocal strain
is eased for teachers and students can
hear better. Overall, the learning
experience is improved.
E ective instruction doesn’t
have to be impaired by a noisy
environment. Sound elds allow
instructors to direct their classes
with a normal speaking level and
students receive valuable
instruction clearly.
Highlights
• 80db Signal-to-Noise Ratio – best in class noise performance ensures your
audience hears the sound and not the noise.
• Improved learning retention and reduced instructor voice fatigue.
• High quality audio delivered in any environment.
• Limited Lifetime Warranty with hassle-free support.
Sound eld systems can be used for large audiences
as well. When used with a Listen transmitter, the
LR-100 receiver delivers the wireless transmission to
your existing sound system speakers in an
auditorium. Listen’s standard 57 channels ensures
you’ll always nd interference-free channels.
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LT-700 Portable Transmitter
The LT-700 Portable Transmitter will broadcast your voice to
everyone in the audience, without having to carry a microphone or
be plugged into the wall. Excellent for factory tours, outdoor events,
wireless microphone applications, classroom, training, or personal
use -- anywhere you need to amplify sound but don’t have (or want)
an installed sound system. The signature Look&Listen™ LCD shows
channel, lock and battery level. It takes AA batteries (alkaline or
NiMH rechargeable). SmartCharge™ capabilities prevent
overcharging of batteries. The antenna is in the mic cord and has an
adjustable mic sensitivity switch.
Highlights
• Super Quiet™ Technology provides superior audio quality.
• Look&Listen™ LCD shows channel, battery status,
and programming information.
• Mic or line level inputs.
• 57-Channel selection.
• 80dB Signal-to-Noise Ratio – best in class noise performance
ensures guests hear the sound and not the noise.
• Standard Alkaline or NiMH bateries.
• Mute button.
• Limited Lifetime Warranty with hassle-free support.
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1. Mute Switch Easy access mute/talk switch.
2. Microphone Jack 3.5mm mic jack for microphone or line level audio source.
3. Multi-function LED Indicates when unit is muted, batteries are low, and charging status.
4. LCD Display Displays channel selection, battery level, and channel lock for programming.
5. Channel Section Allows you to manually change the broadcast channel.
6. Power Turns the unit On/O .
7. Charging Port/Contacts Used with charging cases or power supply to charge NiMH
batteries within the unit.
8. Door Locks Manually lock battery compartment door.
9. Battery Compartment Install alkaline or NiMH batteries to operate unit.
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Key Speci cations
• Range: Line of site, up to 150 feet.
• Number of simultaneous channels: 6/3,
72/216MHz.
• Audio performance: 63 Hz-15KHz frequency
response, >80dB SNR and <2% THD.
Con gurations
LT-700-072 - 72MHz
LT-700-216 - 216MHz
Accessories
Accessories for the LT-700 can be found on
the Sound eld FM Accessories page 6.
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Ampli cation anywhere without wires! All-in-one wireless
receiver, 2-channel 10 Watt power ampli er. Place up to 150 feet
away from a Listen portable transmitter to receive and amplify
the transmission audio. This unit is powered by AA batteries
(alkaline or NiMH rechargeables), or 15VAC power supply or
12 VDC, for 15/10 Watt continuous power. It has unbalanced
auxiliary input and output ports. Listen’s signature Listen’s
LR-600 Look&Listen™ LCD display shows channel, lock, and
battery level. Comes with adjustable mounting bracket/handle.
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FM Receivers
Highlights
• Super Quiet™ Technology provides superior audio quality.
• Easy to use.
• Multiple Channels – you’ll always nd interference-free channels.
• 80dB Signal-to-Noise Ratio – best in class noise performance
ensures guests hear the sound and not the noise.
• Look&Listen™ LCD display shows channel, battery status, signal
strength, lock, and programming information.
• SEEK button automatically nds a channel.
• Limited Lifetime Warranty with hassle-free support.
• Unbalanced aux input and output.
• Adjustable 3-band equalizer.
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1. Channel Selector/Volume Change channel from the top or rear. Adjust volume from the top.
2. Charging/Power Port Power unit and/or charge NiMH batteries.
3. Adjustable 3-Band Equalizer Fine-tune audio output.
4. Input/Output Ports Unbalanced/auxiliary phono/input/output ports.
5. LCD Display Displays channel selection, battery level, signal strength, channel lock
and program features.
6. Antenna Use either the internal or optional external antenna.
7. Battery Compartment Unit can be powered by (8) alkaline batteries or NiMH rechargeable batteries.
8. Adjustable Handle/Mounting Bracket For mounting on wall, ceiling or microphone stand.
9. Speaker 15/10 watt (peak/RMS) 4 ohm 2-way speaker.
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Key Speci cations
• Receiver range from LT-700: Line of site, 150 ft
(45.7 m), 72/216MHz.
• Number of simultaneous channels: 6/3,
72/216MHz.
• System audio performance: 50-15KHz frequency
response, >80dB SNR and <2% THD.
Con gurations
LR-600-072 – 72 MHz
LR-600-216 – 216 MHz
Accessories
Accessories for Listen Receivers can be found
on the Sound eld FM Accessories page 6.
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FM Receivers
Listen’s LR-100 Stationary Receiver/Power Ampli er is a
stationary receiver with a built-in power ampli er. When used
with a Listen transmitter, the LR-100 can deliver high quality
audio for use in a variety of locations and applications – most
commonly sound elds. This unit has Listen’s signature
Look&Listen™ LCD Display showing channel, lock, and battery
level. A security cover protects auxiliary and receiver volume
and trim controls. It has an adjustable squelch control, and
balanced or unbalanced speaker wire output options.
Multiple input options give this unit great exibility.
It’s powered by a 16VAC/1000mA power input or 12 VDC
battery. Add an antenna for longer range applications.
Highlights
• Super Quiet™ Technology provides superior audio quality.
• Look&Listen™ LCD.
• 57-programmable channels.
• Adjustable squelch control.
• Selectable audio output.
• Multiple input and output options.
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1. Audio Section Audio can be adjusted for volume and quality via trim pots and switches. Listen
exclusive technology delivers low noise performance.
2. Receive Section Use the UP and DOWN buttons to select the transmission channel. The LCD
conveniently shows the selected channel, transmitter output power, lock and programming status.
3. Monitor Section You can listen to the transmitted audio using the monitor jack and volume control.
4. Speaker Volume Adjustable volume control for speaker output.
5. Audio Output Section O ers three di erent output options: unbalanced/phono, balanced male XLR
and Phoenix connector for speaker.
6. Audio Input Section Three di erent audio inputs: RF signal through the antenna, unbalanced/phono
or balanced/female XLR 1/4 inch combo connector.
7. Power Connect a power supply (included) to the back of the unit.
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Key Speci cations
• Receiver range from LT-700: Line of site, 150 ft
(45.7 m), 72/216MHz.
• Number of simultaneous channels: 6/3,
72/216MHz.
• System audio performance: 63 Hz - 15KHz
frequency response, >80dB SNR and <2% THD.
• Speaker Output: 15/10 wats (peak/RMS) with
4 ohm load.
Con gurations
LR-100-072 - 72MHz
LR-100-216 - 216MHz
Accessories
• The LA-326 Universal Rack Mounting Kit can
rack mount one or two LR-100 Stationary FM
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Receivers (includes security cover).
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Sound eld FM Accessories and Systems
Accessories
Listen o ers a range of options for your Sound eld FM Accessory needs. Select from Antennas, Mounting Options, Connectors/
Cables, Batteries/Power Supplies, Charging/Carrying Cases, Speakers, Microphones and Miscellaneous Combiners all providing
excellent performance for clear interference-free sound.
Microphones
LA-261
• LA-261 Lavalier Microphone
• LA-262 Over-the-Head Microphone
• LA-270 Noise Cancelling Microphone
• LA-272 Over-the-Head Microphone with Earphone
• LA-274 Hand Held Microphone
• LA-276 Collar Microphone
• LA-277 Conference Microphone
• LA-278 Behind-the-Head Microphone
• LA-279 Over-the-Ear Microphone
Antenna’s
LA-123
• LA-107 Ground Plane Remote Antenna
• LA-116 or LA-117 Coaxial Dipole Remote Antenna
• LA-122 Universal Antenna Kit
• LA-123 or LA-124 90 Degree Helical Antenna
• LA-125 or LA-126 Antenna Kit for Rack Mount
Expansion Speaker
• LA-316 Expansion Speaker
Sound eld FM Systems
Listen’s Sound eld FM systems are ideal for schools, houses of worship, training facilities, outdoor venues, bus tours, etc. The LS-10 is a
versatile system for multiple audio sources. It can be incorporated into an existing sound system or used as a stand-alone system and
can accommodate multiple audio sources. The LS-60 Receiver/Speaker Sound eld FM System is a great solution for classrooms, meeting
rooms or other small venues. This easy to set up system is portable for a quick sound eld solution in any environment.
Wireless speaker/receiver and portable transmitter kit are included. Expansion speakers are also available.
LA-316
LS-10
Product Description System Part Number
LS-09 LS-10 LS-60
LT-700 Portable FM Transmitter 1 1 1
LA-261 Lavalier Microphone 11
LA-276 Collar Microphone 1
LR-100 Stationary FM Receiver/Power Ampli er 1
LR-600 Wireless FM Receiver/Speaker 1 1
LA-202 Power/Charging Supply 11
LA-330 Portable Unit Lanyard 11
LA-316 Expansion Speaker 2
LA-362 Rechargable AA NiMH Batteries 1 1
Example:
Listen System
System Designator
LS-10-216
Frequency
Each Sound eld FM System delivers Listen’s commitment to
providing you with a customizable solution that is simple to
specify, install, and use. You will enjoy outstanding performance
with exceptional support from the Listen team.
Don’t miss a single sound. Listen.
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Frequency Chart
72MHz Range:
Channel Frequency Channel Frequency
1 72.025 20 72.975
2 72.075 33 74.625
A 72.100 34 74.675
3 72.125 I 74.700
4 72.175 35 74.725
K 72.200 36 74.775
5 72.225 37 75.225
6 72.275 38 75.275
B 72.300 J 75.300
7 72.325 39 75.325
8 72.375 40 75.375
N 72.400 R 75.400
9 72.425 21 75.425
10 72.475 22 75.475
C 72.500 F 75.500
11 72.525 23 75.525
12 72.575 24 75.575
O 72.600 S 75.600
13 72.625 25 75.625
14 72.675 26 75.675
D 72.700 G 75.700
15 72.725 27 75.725
16 72.775 28 75.775
P 72.800 T 75.800
17 72.825 29 75.825
18 72.875 30 75.875
E 72.900 H 75.900
19 72.925 31 75.925
32 75.975
The highlighted rows are wide band channels. The non-highlighted rows (narrow band) will only be seen when L/O
is disabled.
Channel Frequency Channel Frequency
1A 216.0125 2K 216.5250
2A 216.0250 3K 216.5375
3A 216.0375 1L 216.5625
1B 216.0625 2L 216.5750
2B 216.0750 3L 216.5875
3B 216.0875 1M 216.6125
1C 216.1125 2M 216.6250
2C 216.1250 3M 216.6375
3C 216.1375 1N 216.6625
1D 216.1625 2N 216.6750
2D 216.1750 3N 216.6875
3D 216.1875 1P 216.7125
1E 216.2125 2P 216.7250
2E 216.2250 3P 216.7375
3E 216.2375 1R 216.7625
1F 216.2625 2R 216.7750
2F 216.2750 3R 216.7875
3F 216.2875 1S 216.8125
1G 216.3125 2S 216.8250
2G 216.3250 3S 216.8375
3G 216.3375 1T 216.8625
1H 216.3625 2T 216.8750
2H 216.3750 3T 216.8875
3H 216.3875 1U 216.9125
1J 216.4125 2U 216.9250
2J 216.4250 3U 216.9375
3J 216.4375 1V 216.9625
1K 216.5125 2V 216.9750
216MHz Range
3V 216.9875
Listen Technologies Corporation
14912 Heritagecrest Way
Bluffdale, Utah 84065-4818, U.S.A.
+1.801.233.8992
+1.800.330.0891
+1.801.233.8995
North America
Fax
www.listentech.com
info@listentech.com
Listen Technologies GmbH
Jasminstr. 16
905022 Oberasbach, Germany
+49 911 955159 0
+49 911 955159 40
EMEAI
Fax
www.listentech.de
info@listentech.de
Printed in the United States of America
© 2007 Listen Technologies Corporation
®
All Rights Reserved 20071010
Don’t miss a single sound.
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