Listen Technologies LA-261 Manuale utente
Dear Valued Customer,
Thank you for choosing Listen! All of us at Listen are dedicated to providing
you with the highest quality products available. We take great pride in their
outstanding performance because we care that you are completely
satised. That’s why we independently certify them to the highest quality
standards and back them with a limited lifetime guarantee. We stand ready
to answer any questions you might have during installation or in the operation
of our products. Should you experience any problems whatsoever with your
Listen products, we are ready to help you in any way we can with prompt,
efcient customer care. Because at Listen, it’s all about you! And should you
have any comments on how we might improve our products or our
service, we’re here to listen.
Here’s how to reach us:
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Thank you and enjoy your listening experience!
Best regards,
Russell Gentner and the Listen Team
• In the few instances where repairs were needed, 99% of all clients indicated that they were happy with
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Assistive Listening • Language Interpretation • Soundeld • Tour Group • Conferencing
Sensitivity Settings
Table of Contents Specications Microphones Information
Specications 3
Microphones 5
Sensitivity Settings 5
LA-261 Lavalier Microphone 6
LA-262 Over-the-Head Microphone 7
LA-270 Noise Canceling Microphone 8
LA-272 Over-the-Head Microphone with Earphone 9
LA-274 Hand Held Microphone 10
LA-276 Collar Microphone 11
LA-277 Conference Microphone 12
LA-278 Behind-the-Head Microphone 13
LA-279 Over-the-Ear Microphone - Presentation Style 14
Supplementary Information 15
Troubleshooting 15
Warranty 16
Contacting Listen 16
Optional Accessories 17
Microphones Table of Contents
3
Specications
Microphone Specications
Specication LA-261
Description High performance lavalier microphone, omni-direc-
tional, electronic condenser. Black. Clip included.
Frequency Rsponse 20 Hz - 15 KHz
Impedance less than 2.2K Ohms
DL Bias 3 VDC required
Connector 3.5 mm mono
Cable Length 36.00 in. (92.0 cm)
Weight 4 oz. (113 g)
Accessories None
Specication LA-270
Description Head-worn, noise-canceling condenser microphone,
uni-directional. Black. Wind screen included.
Frequency Response 300 Hz - 10 KHz
Impedance 1K Ohms
DL Bias 3 VDC required
Connector 3.5 mm mono
Cable Length 55.00 in. (1.4 m)
Weight 2 oz. (59 g)
Accessories None
Specication LA-262
Description Head-worn, uni-directional, electronic condenser
microphone. Black. Clip and wind screen included.
Frequency Response 30 Hz - 5 KHz
Impedance 680 Ohms
DL Bias 3 VDC required
Connector 3.5 mm mono
Cable Length 36.00 in. (92.0 cm)
Weight 8 oz. (227 g)
Accessories LA-264 Replacement Cushions for Over-the-Head
Microphone (1 set)
Specication LA-272
Description Head-worn, uni-directional, electronic condenser
microphone. Black. Clip and wind screen included.
Frequency Response 30 Hz - 5 KHz
Impedance 680 Ohms
DL Bias 3 VDC required
Connector 3.5 mm mono
Cable Length 36.00 in. (92.0 m)
Weight 8 oz. (227 g)
Accessories LA-264 Replacement Cushions for Over-the-Head
Microphone
Specication Earphone
Description Single ear receiver. Black
Frequency Response 20 KHz - 15 KHz
Impedance 32 Ohms
Max Input 130 mW maximum
Connector 3.5 mm mono
Accessories Ear Cushions
Specication LA-274
Description
High performance hand held, omni-directinal, elec-
tronic condenser microphone. Black. Wind screen and
wire stand included
Frequency Response 20 Hz - 15 KHz
Impedance less than 2.2K Ohms
DL Bias 3 VDC required
Connector 3.5 mm mono
Cable Length 36.00 in. (92.0 cm)
Weight 4 oz. (113 g)
Accessories None
Specication LA-276
Description Shoulder/neck-worn, uni-directional microphone.
Black. Flexible body. Wind screen included.
Frequency Response 300 Hz - 18 KHz
Impedance 1K Ohms
DL Bias 1.5 VDC required
Mic Length 22.00 in. (55.9 cm)
Connector 3.5 mm mono
Cable Length 48.00 in. (1.2 m)
Weight 4 oz. (113 g)
Accessories None
Specication LA-277
Description High performance omni-directional microphone,
electronic condenser. Black
Frequency Response 20 Hz - 12 KHz
Impedance 1K Ohms
DL Bias 1.5 VDC required
Mic Height 2.30 in. (58 mm)
Mic Diameter 1.4 in. (35 mm)
Connector 3.5 mm mono
Cable Length 48.00 in. (1.2 m)
Weight 4 oz. (113 g)
Accessories None
4
Specications
Microphone Specications (cont.)
3
Specication LA-278
Description High performance omni-directional microphone,
electronic condenser. Black
Frequency Response 150 Hz - 10 KHz
Impedance 2K Ohms
DL Bias 3 VDC required
Mic Length 4.50 in. (11.5 cm)
Connector 3.5 mm mono
Cable Length 52.00 in. (1.3 m)
Weight 1.5 oz. (42.5 g)
Accessories None
Specication LA-279
Description Head-worn microphone, omni-directional, electronic
condenser microphone, tan colored.
Frequency Response 50 Hz - 18 KHz
Impedance 1,500 Ohms ± 30% (at 1 KHz)
DL Bias 3 VDC required
Connector 3.5 mm mono
Cable Length 36.00 in. (92 cm)
Weight 4.8 oz. (136 g)
Accessories None
5
Sensitivity Settings
Microphones
Introduction
Your Listen microphone is designed to provide high quality audio when used with a Listen LT-700
Portable FM Display Transmitter. Listen microphones will work with LT-700 units on either 72 MHz or
216 MHz. Your Listen microphone will also work with any product that supplies 3 VDC phantom
power and conforms to the diagram below.
To achieve the desired audio quality from your Listen microphone, it is important to use it as
instructed. The instructions for your microphone provide guidelines on placement and use.
If you experience trouble with your microphone, check the troubleshooting section of this manual
first to try to resolve the problem. If you are still having difficulties, contact Listen support (support
information available in the back of this manual).
3.5 mm jack
When you connect your Listen Microphone to your LT-700 Portable FM Display Transmitter, you
must make sure that the microphone sensitivity switch (located inside the front cover of the
LT-700) is set to the sensitivity specified for your microphone. If this switch is not in the correct
position, your audio may sound low or distorted. Please note the sensitivity setting for your
microphone and check the switch setting in the LT-700 prior to using your Listen
equipment.
The microphone sensitivity switch is located
inside the front cover of the LT-700.
Part # Microphone Type
Mic sensitivity
Switch Position
LA-261 Lavalier Microphone omni-directional MED
LA-262 Over-the-Head Microphone uni-directional MED
LA-270 Noise Canceling Microphone uni-directional MED
LA-272 Over-the-Head Mic with Earphone uni-directional MED
LA-274 Hand Held Microphone omni-directinal HI
LA-276 Collar Microphone uni-directional HI
LA-277 Conference Microphone omni-directional HI
LA-278 Behind-the-Head Microphone uni-directional MED
LA-279 Over-the-Ear Microphone-Presentation Style omni-directional MED
Important Information About Microphone Sensitivity Settings
6
Microphones
LA-261 Lavalier Microphone
The LA-261 has an omni-directional pickup pattern. This means that audio from a broader area
can be picked up by the microphone element. The main advantage of this type of microphone
is that it does not have to be oriented directly towards your mouth for good audio pickup.
The LA-261 Lavalier Microphone is a high performance, non-directional microphone that clips on
your collar or lapel.
element
element
element
LA-261
LA-262
LA-272
LA-273
LA-277
Using the LA-261 Lavalier Microphone
•Set the microphone sensitivity switch (located inside front cover of the LT-700 Portable FM
Display Transmitter) to the MED position.
•Clip the microphone as close as possible to your mouth. For best results the mic element should
be no more than 6 inches from your mouth. This will help to ensure that the microphone picks
up your voice rather than room noise.
•Make sure the microphone is not rubbing on your face or clothing.
•Connect the plug firmly to the microphone connector on the LT-700.
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