Listen Tech LA-141 ListenIR Expansion Radiator for LT-84

The LA-141 Expansion Radiator (Pat. 9,712,246) from Listen Technologies expands on the functionality and coverage area of the LT-84 Infrared Transmitter/Radiator combo system, giving users and clients an uninterrupted, high-performance listening experience. Up to four (4) LA-141 Expansion Radiators can be added to the LT-84 system, providing additional coverage up to 2,787 m2 (30,000 ft2) with LR-4200-IR/LR-5200-IR receivers or 697 m2 (7,500 ft2) with LR-42/LR-44 receivers in single-channel mode. A single CAT-5e cable provides both power and signal to the radiators, and the included mounting hardware and single-cable design make installation and setup a breeze.

Key Features

• The only product of its kind that provides complete, gap-less coverage in small- to mid-size spaces
• Up to four radiators can be added to the LT-84 system providing additional coverage up to 2,787 m2 (30,000 ft2)
• Single-cable CAT-5e provides power and audio signal for ease of setup
• Simple installation with the included mounting hardware

Technical Specifications

Audio
System Distortion
< 2% (THD) System Specification (wireless end-to-end with LR-44)
System Signal to Noise Ratio (A-Weighted)
> 60 dB (SNR) System Specification (wireless end-to-end with LR-44)
System Frequency Response
63 Hz - 15 kHz (+/- 3 dB) System Specification (wireless end-to-end with LR-44)
Controls
Indicator Lights On/Off Switch
Two (2) position switch - Indicator Lights OFF, Indicator Lights ON
Delay Compensation
Four (4) position rotary switch setting (0, 1, 2, 3)
Indicators
RJ-45 Amber LED
Solid Amber indicates carrier is present and IR is being transmitted
RJ-45 Green LED
Solid Green indicates power is applied to unit
RF
Carrier Frequencies
2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Number of Channels
Two (2) channels
Power Save Mode
Carrier will shut off when no audio is present for 15 minutes on both channels to preserve radiator life.
Expansion Link Output
One (1) RJ-45 connector - Provides RF Signal and Power to one additional LA-141.CAT-5e cable 24 AWG, 100 ft. (30 m) maximum cable length, two (2) LA-141s per daisy chain (total daisy chain cannot extend beyond two expansion radiators)
Expansion Link Input
One (1) RJ-45 connector - Receives RF Signal and Power from LT-84
IR
Coverage Area
30,000 ft (2787 m) single channel with LR-4200-IR/LR-5200-IR receivers or 7,500 ft (697 m) single channel with LR-42/LR-44 receivers
IR Emitter Power
1.49 W
Power
Power Supply
12 VDC, Provided via LT-84 Expansion Link Output RJ-45s
Current Draw
600 mA per LA-141, maximum of two (2) LA-141s daisy chained with CAT-5e cable 24 AWG 100 ft. (30 m) to each LT-84 Expansion Link Output
Physical
Color
Black with White Silk Screening
Shipping Weight
3.0 lbs. (1.4 kg)
Mounting
Can be mounted on a wall, ceiling, or table with provided hardware (screws and hollow wall anchors not provided). Optional LA-347 Wall Box Mounting Plate is available for mounting to a standard single gang electrical box.
Dimensions (H x W x D)
1.5 x 10.7 x 4.1 in. (3.81 x 27.2 x 10.5 cm)
Unit Weight
0.6 lbs. (0.3 kg)
Environmental
Temperature - Operation
14 F (-10 C) to +104 F (40 C)
Temperature - Storage
-4 F (-20 C) to +122 F (50 C)
Relative Humidity
0 to 95% relative humidity, non-condensing
Compliance
Standards
FCC Part 15, ICS-03, CE, UL, CUL, C-Tick, CCC, PSE, KC, GS, RoHS, WEEE