Listen Technologies LT-700-150 User's Manual

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 satisfi ed. 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, effi cient 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:

+1.801.233.8992

+1.800.330.0891

North America

+1.801.233.8995 fax [email protected]

www.listentech.com

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 repair turn-around-times and 85% of the time, clients were without their product for less than 10 days!

• Overall client satisfaction of working with Listen was rated 4.8 out of 5.

• “ Please continue with your excellent attitude toward customer satisfaction. You guys are great!”

• “I’ve never had such good service from any company. Keep up the good work!”

• “You stand behind your product wonderfully.”

Assistive Listening • Language Interpretation • Soundfi eld • Tour Group • Conferencing

LT-700 Table of Contents

Package Contents

150 MHz Specifi cations

Quick Reference

Setup Instructions

Operating Instructions

Programming Instructions

7

3

4

5

9

10

Charging Batteries

Wall Transformer Operation

Channel Selection

11

12

13

Listen SQ™ 14

Reception

150 MHz Frequency Chart 16

Troubleshooting

Warranty

Contact Information

Optional Accessories

17

19

19

20

1

LT-700 Package Contents

LT-700-150 Contents

• LT-700-150 (150 MHz)

Listen Part Number

LT-700-150 (150 MHz)

Optional Accessories

See page 20

3

4

LT-700 Specifi cations

Architectural Specifi cations

The portable FM transmitter shall be capable of broadcasting on 32 channels. The unit shall incorporate a microphone sensitivity switch. The device shall broadcast on both wide and narrow band channels with a SNR of 80 dB or greater. The device shall have an audio frequency response of 50 Hz to 15 KHz (±3 dB). The device will incorporate a mute switch. The battery door shall be capable of being mechanically locked. The device shall incorporate an LCD display that indicates channel, battery level, low battery, battery charging, and RF signal strength. The device shall be able to enable companding. The unit shall operate off of two (2) AA batteries; alkaline or NiMH. The portable transmitter shall incorporate automatic battery charging circuitry for recharging of NiMH batteries, with the ability to charge via a wall transformer or drop in charging case. The Listen LT-700-150 is specifi ed.

Audio

Power

RF Frequency Range

Number of Channels

Number of Simultaneous

Transmitters

Frequency Accuracy

Transmitter Stability

Transmission Range

Output Power

Antenna

Antenna Connector

Compliance

System Frequency

Response

System Signal to Noise Ratio

System Distortion

Microphone Input

Microphone Sensitivity

Line Input

Microphone Power

Controls &

Indicators

User Controls

Set-up Controls (battery compartment)

Programming

LED

Display

Battery Type

Battery Life (Listen batteries)

Battery Charging (NIMH only)

Power Supply

Power Supply Connector

Power Supply Compliance

Physical

Dimensions (H x W x D)

Color

Unit Weight

Unit Weight with batteries

Shipping Weight

Door

Specifi cations*

150.8000 MHz - 152.3500 MHz

6 wideband, 26 narrowband

Six (6)

± .005% stability 32 to 122º (0 to 50ºC)

50 PPM up to 45.72 m (150 ft.)

10 mW maximum

Uses microphone cable

3.5 mm connector

C-Tick

50 Hz - 15 kHz (±3dB)

SQ enabled 80 dB, SQ disabled 60 dB

<2% total harmonic distortion (THD) at 80% deviation

Unbalanced, tip of 3.5mm connector, -20 dbu nominal, -30 dbu maximum, impedance 21 ohms

Three position switch: high, middle, and low; 6 db increments

Unbalanced, ring of 3.5mm connector, -10 dbu nominal input level, -3 dbu maximum, impedance 10K ohms

3 VDC Bias

Power, mute, channel UP/DOWN

Mic sensitivity, NiMH/alkaline battery, SQ enable/disable

Channel lock out, Channel lock

Red, illuminated when unit is on. Flashes when batteries are low, or to indicate charging. Flashes when muted.

Channel Designation, lock status, signal strength indication, battery life, RF Power

Two (2) AA batteries, alkaline or NiMH

15 hours alkaline (LA-361), 8 hours NiMH rechargeable (LA-362)

Fully automatic, 13 hours

I/P 120VAC; O/P 7.5VDC 250 mA; Drop in contact points for use with charging cases. Power supply not included (LA-208)

2.3mm OD by 0.7mm ID, barrel type connector 7.5 VDC, center positive <250 mA.

Drop in contact points for use with Listen charging cases

RoHS, WEEE, UL, PSE, CE, CUL, TUV, CB compliant

3.00 x 1.00 x 5.00 in. (7.6 x 2.5 x 13.0 cm)

Dark Grey with white silk screening

3.9 oz (111g)

5.8 oz (164g)

1.0 lbs. (0.45kg)

Manually Lockable (on sides). Up, down, and power buttons through door

* Specifi cations are subject to change without notifi cation.

LT-700 Quick Reference

LT-700 Front

3.5 mm Input Jack

A Listen microphone or line level cable connects here.

150

Use UP and DOWN buttons to select a channel. Press and hold either button for 5 seconds to lock the channel. Press and hold either button again to unlock.

Press and hold both buttons for 5 seconds to enter PROGRAM mode.

The PGM icon will appear in the display. To exit PROGRAM, let unit sit idle for 5 seconds.

MUTE / TALK switch

(more information on page 9)

Look & Listen Display™

The display shows level, channel, battery status, PROGRAM mode, whether a channel is locked, and whether a channel is locked out from selection (PROGRAM mode).

See close-up below.

Power Switch

Press PWR switch to turn unit on. Press and hold to turn unit off. When in

PROGRAM mode, this switch is used to toggle the lock out

(L/O) mode for a channel.

LT-700 Look &

Listen Display

When dots are illuminated, the microphone is active. If this display does not appear, the microphone is muted.

Indicates the currently tuned channel

Indicates the unit is in

PROGRAM mode. To enter

PROGRAM mode, press and hold the UP and DOWN keys until the PGM icon appears in the display. To exit PROGRAM mode, let the unit sit idle for 5 seconds.

If the padlock icon is visible, the channel is locked. Press and hold either the UP and DOWN button for 5 seconds to lock or unlock.

Battery level indicator. The indicator flashes, along with the red LED on top of the unit, to alert you when the battery is low and needs to be charged or changed. (see information below)

When in the PROGRAM mode, L/O indicates whether a particular channel is locked out.

LT-700 Battery Indicator

All three segments showing: The batteries are at 50% or greater capacity.

Two segments showing:

The batteries are at

25-49% capacity.

One segment showing:

Your batteries less than 25% capacity.

When this segment begins flashing along with the LED on top of the unit, you should immediately change your batteries or recharge them (if using

NiMH batteries).

5

6

LT-700 Quick Reference

LT-700 Inside Access Door

Battery Select

Switch

Mic Sensitivity

Switch

SQ Switch

Mic Sensitivity Switch - it arrives set at MED, which will work for most microphones. If your mic level is too low, change the switch to HI; if the level is too high, switch to LO. (see page 7 for more information)

Battery Select Switch - place in NiMH position ONLY if you are using Nickel Metal Hydride batteries, otherwise, leave it in the

Alkaline position.

SQ Switch: shipped in the ON position, use a screwdriver or pen to slide to the OFF position if needed. You should turn SQ off if you are using any non Listen receiver or older Listen receiver that does not have the SQ feature. (see page 14 for more information)

LT-700 Top of Unit

MUTE / TALK switch - this mutes the mic only and not the line input when in the mute position.

LED indicators:

Steady Red: Normal operation

Slow Flashing: Battery is low

Slow Flashing while charging: Unit is charging

Fast Flashing: Mute

3.5mm Input Jack

A microphone or line level cable connects here.

A Note on Charging NiMH Batteries

If you are using NiMH batteries in any Listen product, you should allow adequate time for the charger (charging case or LA-208) to complete a full charge cycle on the batteries. This takes about 13 hours.

LT-700 Setup Instructions

1

2

Remove the product

Remove outer packaging and plastic cover. Inspect for physical damage.

If damage is apparent, please contact Listen Technologies Corporation technical support for assistance. See page 19 for contact information.

Open the front access door

If locked, use a pocketknife or small screwdriver to unlock the door locks on both sides of the unit. To unlock the door, rotate the lock 1/4 turn counterclockwise.

Grip the two tabs with your thumb and index finger and pull the door downward. Do NOT place batteries in the unit yet.

3 Select Battery Type

See diagram below. You have two choices: NiMH and Alkaline. The unit is shipped with the switch in the Alkaline position. Use a pen or small screwdriver to select the battery type.

CAUTION: If you are using any battery type other than rechargeable Nickel

Metal Hydride (NiMH) batteries, make sure the BATTERY selection switch is in the alkaline position.

WARNING: Do not place the BATTERY switch in the NiMH position if you are not using Nickel Metal

Hydride Batteries. The NiMH position will attempt to charge any batteries in the unit, even if they are not the proper type. Charging non-Nickel Metal Hydride (NiMH) batteries will result in physical harm, destruction of property and/or fire.

4

5

Unlocked Locked

Set SQ switch

The SQ switch is inside the battery compartment next to the Battery

Select switch. The unit is shipped with SQ in the ON position. To turn it off, use a small screwdriver or pen to slide the switch to the OFF position (to the right). See page 14 for more information on SQ.

Set Mic Sensitivity Switch

The microphone sensitivity switch is located inside the battery compartment, to the left of the BATTERY selection switch. The LT-700 is shipped with this switch in the center (MED) position. Listen recommends the following settings for our microphones. If you are using a microphone from another vendor, you may need to experiment with different settings.

Mic Sensitivity

Switch

Battery Select

Switch

Part # Description Setting

LA-261 Lavalier Microphone MED

LA-262 Over-the-Head Microphone

LA-270 Noise Canceling Microphone

MED

MED

LA-272 Over-the-Head Microphone w/Earphone MED

LA-274 Handheld Microphone HI

LA-276 Collar Microphone HI

LA-277 Conference Microphone MED

LA-278 Behind-the-Head Microphone

LA-279 Over-The-Ear Microphone Presentation

Style

MED

Lo

SQ Switch

NOTE: If the setting is too low for the microphone the audio will be faint. If the setting is too high for the microphone in use the audio will be distorted.

7

8

LT-700 Setup Instructions (cont.)

6 Place Batteries in Unit

Place two (2) AA batteries in the compartment, making note of the battery polarity shown in the battery compartment, and again verifying that the

BATTERY SELECT switch is in the correct position for the batteries you are using.

(ALK should be selected for all battery types other than NiMH).

NOTE: Listen uses 2300mAh (milli-Amp-hour) constant current NiMH (Nickel

Metal Hydride) batteries. These may be purchased from your Listen dealer

(ask for part number LA-362).

7 Connect the Microphone

The microphone jack is located on top of the unit. The LT-700 uses the microphone cable as an antenna for transmitting.

8 Optional - Connect the Line Input Cable.

This cable allows you to connect a TV, CD player or other equipment to the LT-700. To do this, you must order the

Listen LA-263 Line Input Cable (it is not included with your unit). This cable allows you to connect both a microphone and line input to the jack on top of the LT-700. See the diagram below for connection information. You can use the microphone and the line input at the same time. Please note that the MUTE switch mutes only the microphone; the line source will continue transmitting when the switch is in the

MUTE position.

If you prefer to make your own cable for connection of mic and line inputs, connection shown in the following diagram:

Mono-White

Stereo-Red

Video-Yellow

LA-263

1 mm

LT-700 Operating Instructions

1

2

Make sure the unit is on

When you press the power button, the LED on top of the unit will be illuminated and the LCD display will be visible.

Select the channel for transmitting

Please refer to Channel Selection on page 13 for guidelines on choosing an interference-free channel.

To select a channel, press either the channel UP or DOWN button until the display reads the channel you want. To lock your selection, press and hold the UP or DOWN button for 5 seconds. When locked, the small padlock icon will be visible on the display. Press and hold either button again to unlock.

150 MHz Units

The LT-700-150 operates on 6 wide band channels and 26 narrow band channels.

3

4

Close the Access Door

Lock it if desired by turning the locks on the side of the unit to the vertical position. See diagram on page 7.

Using the red MUTE / TALK switch on top of the unit

The red mute/talk switch on top of the unit is a handy way to “turn off” the audio from the microphone.

Slide the switch to the mute position and the microphone audio is muted. When the microphone audio is muted, the LED on top of the unit flashes rapidly. Slide the switch back to the talk position and the microphone audio will return to the transmission. If you are using line level audio, it will not be effected by the mute/talk switch.

LT-700 Shown in the TALK position

9

10

LT-700 Programming Instructions

1

2

3

The LT-700 can be programmed to transmit on a limited number of channels. For applications where users are required to select a channel (such as classrooms or language interpretation), and you don’t want them to have to scroll through all of the available channels, this feature is ideal. You can set up the LT-700 so that only the channels they need to use are available for selection with the UP and DOWN buttons.

Enter PROGRAM Mode

Press and hold the UP and DOWN keys simultaneously until the PGM symbol is displayed (see the

Look & Listen™ Quick Reference on page 5).

Scroll Through Channels to Lock or Unlock

Use the UP and DOWN channel select keys to scroll through all available channels. If the L/O symbol appears with a particular channel’s indicator, this means that particular channel will not be available for selection by the user. To toggle a channel between locked out and available, press the POWER button.

To exit PROGRAM mode

Allow the unit to sit idle (don’t press any buttons) for 5 seconds. The LT-700 will exit the

PROGRAM mode and the PGM icon will disappear.

LT-700 Charging Batteries

1

2

The LT-700 and all Listen receivers are unique because they have SmartCharge™ chargers built in.

When any of these units are connected to an LA-208 wall transformer or dropped into a Listen charging case, NiMH batteries will be charged.

Connect LA-208 here and plug it into an AC wall outlet.

To charge the batteries using the LA-208 wall transformer, plug the transformer into the jack marked “PWR/CHG” on the side of the unit.

The unit can be operated while the batteries are charging.

To charge the batteries using a drop-in charger, simply place the unit into a slot in the charger and connect the charger to power. Make sure the unit is fully seated in its slot.

There are several charging cases available from Listen. Check the Listen website for more details.

SmartCharge™ uses a pulse charging, which greatly extends the life of Nickel

Metal Hydride (NiMH) batteries. The entire charging process takes about 13 hours. Listen recommends that you allow the charger to complete its full cycle every time for maximum battery life.

IMPORTANT: DO NOT ATTEMPT TO CHARGE ANY TYPE OF BATTERY OTHER THAN NiMH (NICKEL

METAL HYDRIDE) with your Listen equipment. Alkaline batteries may explode when connected to a charger. Other risks of charging non-NiMH batteries include destruction of property or fire.

IMPORTANT: In order to charge NiMH batteries, the BATTERY SELECT switch in your Listen product must be set to the NiMH setting. Use a pen or small screwdriver to move the switch (located in the battery compartment) to the proper position.

3 During the charge cycle, the red LED on top of the Listen product will flash slowly. When charging is completed, the LED will turn off. It is not necessary to unplug the charger; however, if you unplug the unit from the charger and then plug it back in, it will begin the 13-hour charge cycle over again.

When not using the LT-700, it is recommended to leave the unit on the charger. The charger provides a maintenance charge that keeps the battery at 100%. If the unit is not on the charger, the battery will lose up to 20% of its charge per month.

NOTE: Listen uses 2300mAh (milli-Amp-hour) constant current NiMH (Nickel Metal Hydride) batteries. These may be purchased from your Listen dealer (ask for part number LA-362).

One of several charging cases available from Listen.

See www.ListenTech.com for more options.

LA-311 - 16-unit Drop In Charging Case shown

11

12

LT-700 Wall Transformer Operation

The LT-700 will operate normally when connected to a wall transformer. Use Listen part number LA-208, available from any Listen dealer. Connect the wall transformer to the jack on the side of the LT-700 marked “PWR/CHG” and plug the wall transformer into a grounded AC outlet.

You do not need to have batteries installed in the LT-700 to operate it with a wall transformer.

NOTE: If batteries are in the unit ensure that the battery selection switch is set properly as shown on page 7. Please review the information on page 11 for important information regarding battery type and charging.

150

Channel Selection

It is important to choose channels that are free from interference to achieve proper operation of your

Listen equipment. This process is trial and error. Before turning on the transmitter, listen to the wide band channels. Listen to the audio through the headphone or on a Listen receiver or receiver / speaker. Choose a channel with the least amount of interface. Unless you are interfacing with an existing narrowband transmission system, always use a wide band channel. If you are using multiple channels follow this process: a. Same Space If you are using multiple transmitters in the same space, the maximum number of channels that will work simultaneously is six at 150 MHz. With all of the transmitters off, listen for interference on all the wide band channels via the headphone jack on a Listen receiver. Using the frequency chart on page 16, eliminate any channels that have noticeable interference. Now choose the channels with the widest channel spacing. It is recommended that adjacent channels be spaced at least 300 kHz. b. Distributed spacing if you are using transmitters that are spread out over space, you can achieve more simultaneous broadcast channels. However, it is critical that your receiver(s) be located as close to its transmitter as possible. You can use adjacent channels (see frequency chart on page

16) in this case as long as the adjacent channel transmitter is at least 50%

further away from the receiver as its transmitter.

It is highly recommended that after channel selection has been achieved, you lock the channel so that it cannot be changed by the user. To accomplish LOCK on the LT-700, press both the UP or

DOWN buttons simultaneously for 5 seconds. Repeat the process to unlock.

Wide Band Recommendation

Listen recommends that you always use a wide band channel unless you need to be compatible with existing narrow band receivers from other manufacturers. Wide band channels have lower noise than their narrow band counterparts.

At 150MHz

The LT-800 at 72MHz operates on 6 wide band channels and 27 narrow band channels.

• Numbers (0-6)= Wide Band Channels

(Example: 4)

• Numbers (7-32)= Narrow Band

Channels (Example: 32)

13

14

Listen SQ™ - Improving your Listening Experience

People are accustomed to listening to low noise, high fi delity audio (delivered via

CD, DVD, etc.). FM radio systems, such as those made by Listen, have more inherent noise compared to most sound systems. To minimize noise, Listen uses a noise reduction technology called ListenSQ™. Both the transmitter and receiver must have the SQ feature enabled to achieve the desired results. SQ is available on new Listen systems, including the system you received in this shipment. If you are planning to use this product with older Listen systems that do not have Listen

SQ or equipment not manufactured by Listen, you should disable Listen SQ. Your

Listen equipment has been shipped to you with the SQ feature enabled. You may need to disable the SQ function for one or more of the following reasons:

1. You are using your new Listen system with older version Listen equipment that does not have the SQ function.

2. You are using your new Listen system with equipment supplied by other

manufacturers.

3. You expect that end users may bring and use their own

receivers that donít have the SQ function.

• SQ is NOT squelch

• Improves noise

performance by at least

20dB

• SQ is NOT compatible with older version Listen products

• SQ is NOT compatible with other manufacturers products

• To work properly, SQ must be enabled for both the

transmitter and receivers

• SQ can be disabled to permit operation with older

Listen products or other

manufacturers products

RF Reception Maximization Strategies

For proper and dependable operation, Listen receivers should receive a strong and consistent signal from the originating transmitter. The following strategies should be used maximize this signal: a. When using your system, keep in mind that the location of both the transmitter and receiver is

critical to maximizing signal strength.

b. Eliminate or minimize obstructions between the transmitter and the receivers.

c. Minimize the distance between the transmitter and the receivers.

d. Stay clear of metal objects.

e. Keep the microphone and headphone cables fully extended. Do not shorten or coil microphone and headphone cables. These cables are the antennas for you portable products.

15

16

150 MHz Compatibility Chart

151.350

151.400

151.450

151.550

151.600

151.650

151.700

151.750

151.850

151.900

151.950

152.000

152.050

152.150

152.200

152.250

152.300

152.350

Frequency

150.900

152.400

151.500

152.100

151.200

151.800

150.850

150.950

151.000

151.050

151.100

151.150

151.250

151.300

27

28

29

30

23

24

25

26

31

32

19

20

21

22

15

16

17

18

11

12

13

14

07

08

09

10

03

04

05

06

01

02

Channel

LT-700 Troubleshooting

Troubleshooting

The LT-700 has no power

Make sure the unit has fully charged batteries, or has a Listen LA-208 wall transformer connected to it.

Press the ON button. If this does not work, try a different set of batteries. Make sure the batteries are installed correctly.

There is no audio

Make sure the MUTE/TALK switch is in the TALK position. Make sure you have the microphone plugged all the way in to the input jack. Make sure you are using a Listen approved microphone (see list on page 7). If you are using the line input, make sure you have connected a line level, unbalanced input at the ring of the connector.

The audio is distorted

Make sure you are using an approved Listen microphone. Try using a different mic sensitivity switch setting (the switch is located inside the battery compartment of the unit). If you are using a line level input, try turning down the level of the input. If you are using any equipment that does not have SQ capability, turn off SQ in the LT-700.

There is hum in the audio

The microphone may be too close to a transformer. Try moving around and see if the hum goes away.

The microphone level is low

The microphone must be in close proximity to the person who is speaking. If this does not work, try using a head-worn microphone. The mic sensitivity switch may be on the wrong setting, see page 7. Try a different setting (the switch is located inside the battery compartment). Some microphones have directional pickups, ensure that the microphone in use is oriented and positioned properly (pointing at the speakers mouth).

The audio doesn’t have much fidelity

If your receivers all have SQ capability, activate SQ in all units by moving their switches to the ON position. In the LT-700 and all SQ-equipped receivers, the SQ switch is located inside the battery compartment. See page 14 for more information.

There is too much noise

This is most likely because the microphone is not close enough to the speakers mouth, and it is picking up background noise. Try positioning the microphone closer or try using a microphone that is directional (such as a head-worn mic). If you are using a narrow band channel, try switching to a wide band channel. Try another setting on the mic sensitivity switch (located inside the battery compartment).

Ensure the microphone is not brushing up against anything. See page 7 for more information.

There is interference

Try different frequencies until you find a clear channel.

I cannot pick up the signal on the receiver

Make sure the transmitter and the receiver are on the same frequency band and channel.

I can pick up the signal on the receiver, but it sounds like it’s not tuned in

Check to make sure the transmitter and receiver are on exactly the same channel number / letter. If using another brand of receiver refer to Listen’s Frequency Chart on page 16).

17

18

LT-700 Troubleshooting (cont.)

Troubleshooting

There is not sufficient range

The LT-700 is a portable transmitter that uses the microphone cable as an antenna and the range will vary depending on the location of the receivers compared to the transmitter. You can only expect about 100 feet of average effective working range.

It’s confusing for users to have 32 channels when switching between channels

Use the PROGRAM function to lock out unwanted channels. This way, users will only need to scroll among a few channels.

I cannot change the channel

It is probably locked (check for the padlock icon). To unlock, press and hold the UP or DOWN button for 5 seconds.

My batteries are not charging

Make sure you are using NiMH batteries and that the BATTERY SELECT switch (inside the battery compartment) is set to the NiMH position. Make sure the batteries are installed correctly. Make sure you are using the right kind of wall transformer (Listen part number LA-208) or charging case. Make sure the charging case is connected to power and the unit is securely pushed into its slot in the case.

NOTE: Listen uses 2300 mAh (milli-Amp-hour) constant current NiMH (Nickel Metal Hydride) batteries.

These may be purchased from your Listen dealer (ask for part number LA-362).

Warranty & Contacting Listen

Warranty

Listen Technologies Corporation (Listen) warrants its transmitters and receivers (LT-82, LT-700, LT-800, LR-42,

LR-44, LR-400, LR-500) to be free from defects in workmanship and material under normal use and conditions for the useful lifetime of the product from date of purchase.

Listen warrants its Stationary IR Radiators (LA-140) to be free from defects in workmanship and material under normal use and conditions for three years from the date of purchase.

Listen warrants its Noise Canceling Microphone (LA-270) to be free from defects in workmanship and material under normal use and conditions for one year from date of purchase.

Listen warrants its Charging/Carrying Cases (LA-306, LA-311, LA-313, LA-317, LA-318, LA-319, LA-320, LA-321, LA-322,

LA-323, LA-324, LA-325) to be free from defects in workmanship and material under normal use and conditions for one year from date of purchase.

All other products and accessories are warranted for 90 days from date of purchase.

This warranty is only available to the original end purchaser of the product and cannot be transferred. Warranty is only valid if warranty card has been returned within 90 days of purchase. This warranty is void if damage occurred because of misuse or if the product has been repaired or modifi ed by anyone other than a factory authorized service technician. Warranty does not cover normal wear and tear on the product or any other physical damage unless the damage was the result of a manufacturing defect. Listen is not liable for consequential damages due to any failure of equipment to perform as intended. Listen shall bear no responsibility or obligation with respect to the manner of use of any equipment sold by it. Listen specifi cally disclaims and negates any warranty of merchantability or fi tness of use of such equipment including, without limitation, any warranty that the use of such equipment for any purpose will comply with applicable laws and regulations. The terms of the warranty are governed by the laws of the state of Utah.

In the fi rst ninety days after purchase, any defective product will be replaced with a new unit. After 90 days, Listen will, at its own discretion either repair or replace transmitters and receivers with a new unit or a unit of similar type and condition. Product that is not covered under warranty shall be repaired or replaced with a unit of similar type and condition based on a fl at fee. Contact Listen for details.

This limited warranty, prices and the specifi cations of products are subject to change without notice.

Contacting Listen

If technical service is needed, please contact Listen. Pre-authorization is required before returning Listen products.

If products were damaged in shipment, please contact the carrier, then contact Listen for replacement or repair requirements payable by the carrier.

Listen’s corporate headquarters are located in Bluffdale, Utah U.S.A. and are open Monday through Friday, 8am to

5pm Mountain Time.

14912 Heritagecrest Way

Bluffdale, Utah 84065-4818

+1.801.233.8992

+1.800.330.0891 North America

+1.801.233.8995 fax [email protected]

www.listentech.com

19

Optional Accessories

Microphone Accessories

L li

LA-261

Mi h

LA-262

Over-the-Head

Microphone

LA-270

Noise Canceling

Microphone

LA-272

Over-the-Head Mic w/ Earphone

LA-274

Hand-Held

Microphone

20

LA-276

Collar

Microphone

LA-277

Conferencing

Microphone

LA-278

Behind-the-Head

Microphone

LA-279

Over-the-Ear Microphone

Presentation Style

LA-263

Line/Mic Y Input

Cable for LT-700

Accessories

LA-361

High Capacity AA Alkaline

Batteries (2)

LA-311 16-Unit Portable Charging/Carrying Case

LA-313 16-Unit Portable Carrying Case

LA-317 4-Unit Portable Charging/Carrying Case

LA-318 4-Unit Portable Carrying Case

LA-320 Confi gurable Carrying Case

LA-321 8-Unit Portable Charging/Carrying Case

LA-322 8-Unit Portable Carrying Case

LA-323 4-Unit Portable Charging/Carrying Case w/Removable Lid

LA-324 8-Unit Portable Charging/Carrying Case w/Removable Lid

LA-325 16-Unit Portable Charging/Carrying Case w/Removable Lid

LA-362

Rechargeable AA NiMH

Batteries (2)

Notes

21

Listen Technologies Corporation

14912 Heritagecrest Way

Bluffdale, Utah 84065-4818, U.S.A.

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