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
• 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 • Soundeld • Tour Group • Conferencing
• LA-317 4-Unit Charging/Carrying
Case or LA-323 4-Unit Charging/
Carrying Case
• Power Supply
• Keys
•Shoulder Carrying Strap
LA-318 Contents
• LA-318 4-Unit Storage/Carrying
Case
• Keys
• Shoulder Carrying Strap
LA-317/323 Highlights
•Sturdy case with hard foam interior and durable latches
•Charges up to 4 receivers or portable transmitters with NiMH batteries
•Pocket stores power supply, earphones and/or other accessories
•SmartCharge™ charging technology built into Listen products prevents overcharge
•Case comes with keys and can be locked for security
•Detachable nylon carrying strap
3
•Convenient removable lid (LA-323 model only)
LA-318 Highlights
•Sturdy case with hard foam interior and durable latches
•Individual storage pockets for a combination of 4 receivers and transmitters
•Large pocket for accessory storage
•Case comes with keys and can be locked for security
•Detachable nylon carrying strap
3
4
Page 9
4-Unit Case Specications
Power
Physical
PowerNone
Physical
Primary Power
Secondary Power
DescriptionBlack, grey, and chrome lockable hard case. Interior foam.
Weight2.6 lbs. (1.2 kg)
Shipping Weight5 lbs. (2.2 kg)
Shoulder Carrying Strap LengthAdjustable 33.00 to 53.00 in. (83.0 to 135.0 cm)
Power Cord Length6.0 ft. (1.8 m)
Size W x H x D11.80 x 7.50 x 3.75 in. (30.0 x 7.5 x 9.5 cm)
Input 110-120 VAC, 60 Hz, 15 W
Output 7.5 VDC, 600 Ma
SpecicationLA-318
DescriptionBlack, grey, and chrome lockable hard case. Interior foam.
Weight2.6 lbs. (1.2 kg)
Shipping Weight5 lbs. (2.2 kg)
Shoulder Carrying Strap LengthAdjustable 33.00 to 53.00 in. (83.0 to 135.0 cm)
Size W x H x D11.80 x 7.50 x 3.75 in. (30.0 x 7.5 x 9.5 cm)
SpecicationLA-317/LA-323
4-Unit Cases
5
Page 10
1
2
3
8-Unit Cases4-Unit Cases
LA-317/323 Charging Instructions
Plug power supply into power source.
Any 110 to 120 VAC outlet can be used. The power must stay connected during
the full 13 hour charge cycle.
Plug power into case.
The green LED next to the power connector will illuminate
indicating the case is powered.
Check Battery Select Switch.
Make sure that you are using NiMH batteries and that the
battery select switch is in the correct position. Charging will only occur when the
Listen product’s battery selection switch is set to the “NiMH” position. This switch
is located inside the battery compartment of the product.
green LED lit when
power is connected
Enlarged area of interior of
LR-500
Warning: Do not attempt to charge alkaline batteries. This may damage the unit
and case, and will void the warranty!
Turn units to be charged OFF.
4
For optimal charging, receivers and transmitters should be turned OFF* during
the charge cycle. Portable transmitters manufactured prior to 2003 require that
the unit be turned ON to begin charging. Once charging begins, turn the
unit OFF.
Receiver power
switch - turn
clockwise until you
hear a ‘click’
LT-700 power switch
6
Page 11
LA-317/323 Charging Instructions (cont.)
Place units in case slots.
5
Connect units to power.
Plug power connectors into PWR/CHG jack on the side of the units.
4-Unit Cases
Verify units are charging.
6
Watch units for 10 seconds before leaving them to charge. Once placed in the
charging slots, the red LED on top of Listen’s portable receivers and transmitters will
glow continuously for 1-2 seconds, then extinguish. The units will then evaluate
battery status for 5-7 seconds. If the battery select switch is positioned in the NiMH
setting, the red LED will begin to flash indicating that the units are charging.
NOTE: If batteries are completely discharged, the red LED will remain solid while the
batteries are reconditioned. Unit should begin flashing after 5-10 minutes. The
LED may flicker during the reconditioning process.
Verify Full Charge.
7
Each unit’s red LED will stop flashing once charging is complete. Charging time for
full recharge on completely discharged batteries is 13 hours.
NOTE: If a unit is removed from the case during the charge cycle, and then
reinserted, it will begin a new charge cycle.
WARNING: The case lid MUST be open or removed while the units are charging. The
charging process generates heat and ventilation is required. It is best to
store your charging case at room temperature away from heat sources
and direct sunlight.
7
Page 12
Page 13
Page 14
8-Unit Case Package Contents
8-Unit Cases
LA-321/324 Contents
• LA-321 8-Unit Charging/Carrying
Case or LA-324 8-Unit Charging/
Carrying Case
• Power Supply
• Keys
•Shoulder Carrying Strap
LA-322 Contents
• LA-322 8-Unit Storage/Carrying Case
• Keys
• Shoulder Carrying Strap
10
LA-321/324 Highlights
•Sturdy case with hard foam interior and durable latches
•Charges up to 8 receivers or portable transmitters with NiMH batteries
•Removable charging platform
•Large pocket stores power supply, earphones and/or other accessories
•Center pocket stores earphones or other accessories
•Earphones can remain attached to receivers during storage and charging
•SmartCharge™ charging technology built into Listen products prevents overcharge
3
•Case comes with keys and can be locked for security
•Detachable nylon carrying strap
•Convenient removable lid (LA-324 model only)
LA-322 Highlights
•Sturdy case with hard foam interior and durable latches
•Stores up to 8 receivers or portable transmitters
•Pocket stores earphones and/or other accessories
•Earphones can remain attached to receivers during storage
•Case comes with keys and can be locked for security
•Detachable nylon carrying strap
3
Page 15
8-Unit Case Specications
Power
Physical
PowerNone
Physical
Primary Power
Secondary Power
DescriptionBlack, grey, and chrome lockable hard case. Interior foam.
Weight6.2 lbs. (2.80 kg)
Shipping Weight9.0 lbs. (4.00 kg)
Shoulder Carrying Strap LengthAdjustable 33.00 to 53.00 in. (83.0 to 135.0 cm)
Power Cord Length12.0 ft. (3.7 m)
Size W x H x D15.75 x 9.80 x 7.00 in. (40.0 x 25.0 x 18.0 cm)
DescriptionBlack, grey, and chrome lockable hard case. Interior foam.
Weight6.2 lbs. (2.80 kg)
Shipping Weight8.0 lbs. (3.60 kg)
Shoulder Carrying Strap LengthAdjustable 33.00 to 53.00 in. (83.0 to 135.0 cm)
Size W x H x D15.75 x 9.80 x 7.00 in. (40.0 x 25.0 x 18.0 cm)
SpecicationLA-321/324
Input 100-240 VAC, 50-60 Hz, 1200 mA
Output 7.5 VDC, 4A, 30W
SpecicationLA-322
8-Unit Cases
11
Page 16
1
2
3
8-Unit Cases
LA-321/324 Charging Instructions
Plug power supply into power source.
Any 110 to 120 VAC outlet can be used. The power must stay connected during
the full 13 hour charge cycle.
Plug power into case.
The green LED next to the power connector will illuminate
indicating the case is powered.
Check Battery Select Switch.
Make sure that you are using NiMH batteries and that the
battery select switch is in the correct position. Charging will only occur when the
Listen product’s battery selection switch is set to the “NiMH” position. This switch
is located inside the battery compartment of the product.
green LED lit when
power is connected
Enlarged area of interior of
LR-500
Warning: Do not attempt to charge alkaline batteries. This may damage the unit
and case, and will void the warranty!
Turn units to be charged OFF.
4
For optimal charging, receivers and transmitters should be turned OFF* during
the charge cycle. Portable transmitters manufactured prior to 2003 require that
the unit be turned ON to begin charging. Once charging begins, turn the
unit OFF.
Receiver power
switch - turn
clockwise until you
hear a ‘click’
LT-700 power switch
12
Page 17
LA-321/324 Charging Instructions (cont.)
Place units in charging slots.
5
It may be necessary to press the units down
into the pocket to ensure that it is touching
the charging contacts.
Verify units are charging.
6
Watch units for 10 seconds before leaving them to charge. Once placed in the
charging slots, the red LED on top of Listen’s portable receivers and transmitters will
glow continuously for 1-2 seconds, then extinguish. The units will then evaluate
battery status for 5-7 seconds. If the battery select switch is positioned in the NiMH
setting, the red LED will begin to flash indicating that the units are charging.
NOTE: If batteries are completely discharged, the red LED will remain solid while the
batteries are reconditioned. Unit should begin flashing after 5-10 minutes. The
LED may flicker during the reconditioning process.
8-Unit Cases
Verify Full Charge.
7
Each unit’s red LED will stop flashing once charging is complete. Charging time for
full recharge on completely discharged batteries is 13 hours.
NOTE: If a unit is removed from the case during the charge cycle, and then
reinserted, it will begin a new charge cycle.
WARNING: The case lid MUST be open or removed while the units are charging. The
charging process generates heat and ventilation is required. It is best to
store your charging case at room temperature away from heat sources
and direct sunlight.
13
Page 18
Page 19
Page 20
16-Unit Case Package Contents
LA-311/325 Contents
• LA-311 16-Unit Charging/Carrying
Case or LA-325 16-Unit Charging/
Carrying Case
• Power Supply
• Keys
•Shoulder Carrying Strap
LA-313 Contents
• LA-313 16-Unit Storage/Carrying Case
• Keys
• Shoulder Carrying Strap
16-Unit Cases
16
LA-311/325 Highlights
•Sturdy case with hard foam interior and durable latches
•Removable charging platform
•Charges up to 16 receivers or portable transmitters with NiMH batteries
•Large pocket stores power supply, earphones and/or other accessories
•Small pockets store earphones or other accessories
•Earphones can remain attached to receivers during storage and charging
•SmartCharge™ charging technology built into Listen products prevents overcharge
3
•Case comes with keys and can be locked for security
•Detachable nylon carrying strap
•Convenient removable lid (LA-325 model only)
LA-313 Highlights
•Sturdy case with hard foam interior and durable latches
•Stores up to 16 receivers or portable transmitters
•Large pocket stores earphones and/or other accessories
•Small pocket stores earphones and/or other accessories
•Earphones can remain attached to receivers during storage
•Case comes with keys and can be locked for security
3
•Detachable nylon carrying strap
Page 21
16-Unit Case Specications
Power
Physical
PowerNone
Physical
Primary Power
Secondary Power
DescriptionBlack, grey, and chrome lockable hard case. Interior foam.
Weight7.6 lbs. (3.50 kg)
Shipping Weight11.0 lbs. (5.00 kg)
Shoulder Carrying Strap LengthAdjustable 33.00 to 53.00 in. (83.0 to 135.0 cm)
Power Cord Length12.0 ft. (3.7 m)
Size W x H x D18.25 x 13.00 x 6.75 in. (46.0 x 33.0 x 17.0 cm)
DescriptionBlack, grey, and chrome lockable hard case. Interior foam.
Weight7.0 lbs. (3.50 kg)
Shipping Weight10.0 lbs. (4.50 kg)
Shoulder Carrying Strap LengthAdjustable 33.00 to 53.00 in. (83.0 to 135.0 cm)
Size W x H x D18.25 x 13.00 x 6.75 in. (46.0 x 33.0 x 17.0 cm)
SpecicationLA-311/325
Input 100-240 VAC, 50-60 Hz, 1200 mA
Output 7.5 VDC, 4A, 30W
SpecicationLA-313
16-Unit Cases
17
Page 22
LA-311/325 Charging Instructions
Plug power supply into power source.
1
Any 110 to 120 VAC outlet can be used. The power must stay connected during
the full 13 hour charge cycle.
Plug power into case.
2
The green LED next to the power connector will illuminate
indicating the case is powered.
Check Battery Select Switch.
3
Make sure that you are using NiMH batteries and that the
battery select switch is in the correct position. Charging will only occur when the
Listen product’s battery selection switch is set to the “NiMH” position. This switch
is located inside the battery compartment of the product.
green LED lit when
power is connected
16-Unit Cases
4
Enlarged area of interior of
LR-500
Warning: Do not attempt to charge alkaline batteries. This may damage the unit
and case, and will void the warranty!
Turn units to be charged OFF.
For optimal charging, receivers and transmitters should be turned OFF* during
the charge cycle. Portable transmitters manufactured prior to 2003 require that
the unit be turned ON to begin charging. Once charging begins, turn the unit
OFF.
Receiver power
switch - turn
clockwise until you
hear a ‘click’
LT-700 power switch
18
Page 23
LA-311/325 Charging Instructions (cont.)
Place units in charging slots.
5
It may be necessary to press the units down
into the pocket to ensure that it is touching the
charging contacts.
Verify units are charging.
6
Watch units for 10 seconds before leaving them to charge. Once placed in the
charging slots, the red LED on top of Listen’s portable receivers and transmitters will
glow continuously for 1-2 seconds, then extinguish. The units will then evaluate
battery status for 5-7 seconds. If the battery select switch is positioned in the NiMH
setting, the red LED will begin to flash indicating that the units are charging.
NOTE: If batteries are completely discharged, the red LED will remain solid while the
batteries are reconditioned. Unit should begin flashing after 5-10 minutes. The
LED may flicker during the reconditioning process.
Verify Full Charge.
7
Each unit’s red LED will stop flashing once charging is complete. Charging time for
full recharge on completely discharged batteries is 13 hours.
NOTE: If a unit is removed from the case during the charge cycle, and then
reinserted, it will begin a new charge cycle.
WARNING: The case lid MUST be open or removed while the units are charging. The
charging process generates heat and ventilation is required. It is best to
store your charging case at room temperature away from heat sources
and direct sunlight.
16-Unit Cases
19
Page 24
Page 25
Page 26
25-Unit Case Package Contents & Specications
LA-320 Contents
• LA-320 25-Unit Configurable
Carrying Case
• Keys
•Shoulder Carrying Strap
•Sturdy case with hard foam interior and durable latches
•Stores up to 25 portable receivers or portable transmitters
•Can be configured to store stationary transmitters and stationary receivers.
•Can be used to store any accessory items (headphones, earphones, power supplies, etc.)
•Earphones can remain attached to receivers during storage
•Case comes with keys and can be locked for security.
25-Unit Case
LA-320 Highlights
25-Unit Case Specications
3
SpecicationLA-320
PowerNone
DescriptionBlack, grey, and chrome lockable hard case. Interior foam covered wood dividers.
Physical
Weight8.0 lbs. (3.70 kg)
Shipping Weight10.2 lbs. (4.60 kg)
Shoulder Carrying Strap LengthAdjustable 33.00 to 53.00 in. (83.0 to 135.0 cm)
Size W x H x D18.25 x 13.00 x 6.75 in. (46.0 x 33.0 x 17.0 cm)
Information
22
Page 27
LA-320 Conguration Instructions
The LA-320 Configurable Carrying Case can accommodate a combination of
different Listen products. This product is designed to adapt to the specific needs
of each customer.
To Configure:
•Remove any of the small section dividers; or move small section
dividers up or down as needed.
•Remove any of the large section dividers; or move large
section dividers left or right as needed.
•Replace small and large section dividers as needed to fit your application.
•Store any unused section dividers for future use.
•Close lid to ensure a secure fit for all equipment.
NOTE: When removing section dividers for customization of your case, it may be
necessary to use extra section dividers for added support and strength. This
can be accomplished by doubling up end dividers as shown in the
illustration.
25-Unit Case
23
Page 28
Removable Charging Platform
Listen 8 and 16 slot charging platforms can be used without the carrying case.
If you desire to place the platform on a table, shelf or in a drawer to minimize
the space required for charging, the foam platform can be used separately.
The removable charging platform is available on the 8 and 16 unit charging
cases only (LA-321, LA-324, LA-311 and LA-325).
To Remove Platform:
•Open case.
•Hold case, while gently pulling the right side of the foam charging platform
upward.
•Unplug charging wire at the 2 pin connection located
under the foam platform.
•Attach external charging adapter cable (included)
to the foam charging platform connector.
•Plug in power supply to adapter cable.
•Charge units. (see charging instructions for your case)
Removable foam charging platform
External charging adapter cable
Information
24
Page 29
NiMH Battery Technology
Listen LA-362 NiMH batteries are industrial grade and provide constant current
to Listen products. These batteries provide 2000 milliamp hours (mAh) of storage
capacity. When used with Listen supplied batteries, Listen products should provide
the following operational time after batteries are fully charged:
Receivers: 15 hours
Transmitters: 8 hours
Listen recommends that new batteries be put through two-charge cycles prior
to use.
Nickel Metal Hydride (NiMH) batteries have no memory effect, so each charge
offers full recharge capacity.
NiMH batteries can be repeatedly charged to full capacity from any level of
capacity. NiMH batteries typically maintain optimal performance for 500 to 700
charge cycles. Listen recommends that batteries be replaced after 2 years of
service or whenever the batteries no longer hold a charge.
Please note that NiMH batteries should be recharged if they have been sitting idle
for more than two months, as they lose around 20-30% of their charge each month.
To avoid battery discharge while not using Listen products, it is recommended to
leave units in a powered case, as the maintenance charge will ensure the batteries
remain at full charge. Make sure the case lid remains open or removed. The
charging process generates heat and ventilation is required.
The batteries seem to drain when left in the case.
Make sure unit’s volume wheel remains in the “off” position when stored in the case. It is
possible to turn units on when placing them in carrying pockets.
The red LED on my portable product does not flash when connected in charging case (which
indicates charging is not occurring.)
Make sure unit’s volume wheel remains in the “off” position when stored in the case. It is
possible to turn units on when placing them in carrying pockets. Check that there is power to
the case, this is verified by the green LED next to the power connection being lit. The
batteries may be completely discharged. In this situation, leave the unit in the charging case
for 5-10 minutes, while the batteries are reconditioned. Verify tight connection between
charging wire and unit. Verify unit battery switch is in NiMH position.
8-Unit &16-Unit Case Troubleshooting:
The red LED on my portable receiver does not flash when product is placed in the charging
case (which indicates charging is not occurring.)
Check that there is power to the case, this is verified by the green LED next to the power
connection being lit. Make sure that the plug underneath the removal charging platform is
connected. Verify unit is seated correctly and is making contact with the charging pins. Some
minor adjustments of the unit’s position in the charging pocket may be required. The batteries
may be completely discharged. In this situation, leave the unit in the charging case for
5-10 minutes, while the batteries are reconditioned. Verify unit battery switch is in NiMH position.
The red LED on the LT-700 does not flash when product is placed in the charging case
(which indicates charging is not occurring.)
Verify issues related to portable receivers are not present. If unit was manufactured prior to
2003, unit will need to be turned “on” for charging to begin. Once these units begin charging,
they may be turned “off”. Verify unit battery switch is in NiMH position.
The LCD on the product goes dark during charging.
This is normal, discoloration of the LCD may occur during charging. This does not affect the
performance of the product, and the LCD will return to normal after charging is complete.
The product operates for a short amount of time after charging before it needs to be charged
again (less than 5 hours).
Verify the batteries are less than 2 years old and have not exceeded 500 charge cycles.
Replace the batteries if necessary. Verify the units receive proper amount of charging time
between each use. A complete charge takes 14 hours. Listen recommends charging products
overnight for best performance.
Information
26
Page 31
Warranty & Contacting Listen
Warranty
Listen Technologies Corporation (Listen) warrants its transmitters and receivers (LT-82, LT-700, LT-800, LR-100, LR-42,
LR-44, LR-300, LR-400, LR-500, LR-600) 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 modied 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 specically disclaims and negates any warranty of merchantability
or 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 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 at fee. Contact Listen for details.
This limited warranty, prices and the specications 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
This sturdy nylon case can be used to store and
transport 1 to 3 portable products and accessories.
Dimensions: 8.00 x 3.00 x 7.00 in. (7.6 x 17.7 x 20.2 cm)
H x W x D.
The protective pouch is great for outside or dusty
environments. Belt clip and connectors accessible
through windows and openings.
LA-362
Listen NiMH
Rechargeable AA
Batteries
LA-202
Power/Charging
Supply
Power/Charging Options
Longer life than NiCAD without the “memory effect.”
Required for use in charging cases. Package of two AA
batteries
Use to power individual portable units without
batteries, or to charge units with NiMH batteries.
115VAC/7.5VDC
Information
28
Page 33
Notes
29
Page 34
Notes
30
Page 35
Notes
31
Page 36
Listen Technologies Corporation
14912 Heritagecrest Way
Bluffdale, Utah 84065-4818, U.S.A.