The new LT-84 ListenIR Transmitter-Radiator is the only product of its kind that provides complete coverage in a wide variety of venue spaces. This advanced IR product is simple to use, cost-effective, designed to blend in to any environment, and offers twice the amount of IR power of similar products, and up to six times the coverage area.

A single unit provides up to 30,000 ft² (2787 m²) coverage area with LR-4200-IR/LR-5200-IR receivers or 7,500 ft² (697 m²) with LR-42/LR-44 receivers in single channel mode, ensuring that the entire room has coverage without gaps or null spots.The LT-84 is the first IR system with Expansion Radiators (LA-141) that implement delay compensation—no signal cancellation drop outs.

It is the only two channel Transmitter-Radiator with up to four frequencies; 2.3 MHz, 2.8 MHz, 3.3 MHz, or 3.8 MHz, providing flexibility in the field and eliminating the need to purchase a specific frequency based transmitter-radiator.In addition four (4) Expansion Radiators (LA-141) can be added for additional coverage, when mounted within 100 ft. (30.48 m) cable length from the LT-84.

A single CAT-5e cable carries both power and signal to the LA-141 Expansion Radiators making it a true one-cable connection.Easy installation includes mounting hardware for wall, ceiling, or table mounting and a multi-lingual legislative compliance sign. Flexible frequency selection and input connectivity minimizes on-site installation hassles.

• The best, most cost-effective solution for secure assistive listening in smaller spaces such as; classrooms, courtrooms, corporate meeting rooms, and theaters.
• The only product of its kind that provides complete, gap-less coverage in small-to-medium spaces.
• This advanced IR product is simple to use, cost-effective, designed to blend in to any environment, and offers more coverage than similar products.
• The LT-84 with one channel covers up to 30,000 ft² (2787 m²) with LR-4200-IR/LR-5200-IR receivers or 7,500 ft² (697 m²) with LR-42/LR-44 receivers.
• Add up to (4) four expansion radiators (LA-141) for additional coverage, when mounted within 100 ft. (30.48 m) cable length from the LT-84.
• Flexible frequency selection of 2.3, 2.8, 3.3, 3.8 MHz in a single unit.
• True one-cable connection via single CAT-5e cable which carries both power and signal to the LA-141 expansion radiators.
• Flexible input connectivity of Mic, RCA stereo sum, and Phoenix line level summed on each input channel simplifies installation.

Audio

• Frequency Response 20 Hz - 20 kHz (+/- 1 dB) Line Input 63 Hz - 15 kHz (+/- 3 dB) System Specification (wireless end-to-end with LR-44)
• Signal-to-Noise Ratio >70 dB (SNR) Line Input >60 dB (SNR) System Specification (wireless end-to-end with LR-44)
• Total Harmonic Distortion <0.1% (THD) Line Input <2% (THD) System Specification (wireless end-to-end with LR-44)
• Balanced Line Input Mono Input. Two (2) Phoenix Type connector, balanced, + 4 dBu nominal input, +14 dB headroom, impedance 100k Ohms
• Microphone Input Two (2) 3.5 mm (0.14 in.) Tip/Sleeve connector, -30 dBu nominal input, +14 dB headroom, impedance 4.4k Ohms, 5 VDC bias supply
• Unbalanced Line Input Stereo/Mono Input. Two (2) Dual (RCA) Phono connectors, unbalanced, -10 dBu nominal input, +14 dB headroom, impedance 10k Ohms

Controls

• Power Switch Three (3) position switch - Power OFF, Power ON-Indicator Lights OFF, Power ON-Indicator Lights ON
• Level Control Knob Two (2) audio taper rotary potentiometer, counter-clockwise decreases input mix level, clockwise increases input mix level
• Carrier Frequency Selection Two (2), four (4) position rotary switches (2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz)

Indicators

• Power Supply LED Green LED on in-line power supply indicates AC power is applied
• Audio Level Indicators Two (2) Green LEDs, two (2) Red LEDs, Green LED indicates Audio presence and Red LED indicates peaks in the audio
• 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, flashing indicates unit has entered power save mode

RF

• Number of Channels Two (2) channels, Selectable carrier frequency
• Frequency Accuracy +/- .005% stability 0 to 50 °C
• Transmitter Stability 50 PPM
• Expansion Link Output Two (2) RJ-45 connectors - Provides RF Signal and Power, CAT-5e cable 24 AWG, 100 ft. maximum cable length, two (2) LA-141s per output connector
• Modulation FM Wideband, +/-50kHz deviation max, 50 μS pre-emphasis
• Carrier Frequencies 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz, Selectable
• Power Save Mode Carrier will shut off when no audio is present for 15 minutes on both channels to preserve radiator life

IR

• IR Emitter Power 1.49 W
• Coverage Area 30,000 ft² (2787 m²) single channel with LR-4200-IR/LR-5200-IR receivers or 7,500 ft² (697 m²) single channel with LR-42/LR-44 receivers

Power

• Power Supply Output 12 VDC, 4 A, 48 W
• Power Supply Connector 2.5 mm ID barrel connector, center positive
• Power Output Two (2) RJ-45 connectors. providing Power and RF signal for up to two (2) LA-141 expansion radiators on each output
• Power Supply Type In-line switching mode power supply, Listen part number LA-210
• Power Supply Input 100-240 VAC, 50-60 Hz
• Power Supply Line Cord IEC line cord, North America Type B (LT-84-01), Asia and UK Type G (LT-84-02), Euro Type C (LT-84-03), Australia Type I (LT-84-04)

Physical

• Unit Weight 0.8 lbs. (0.4 kg)
• Dimensions (H x W x D) 1.5 x 10.7 x 4.1 in. (3.81 x 27.2 x 10.5 cm)
• Color Black with White Silk Screening
• Unit Weight with Power Supply 1.8 lbs. (0.8 kg)
• Shipping Weight 3.4 lbs. (1.54 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

• Power Supply Compliance Marks CUL, UL, CE, CCC, C-Tick, KC, PSE, GS, FCC, RoHS
• Standards FCC part 15, ICS-03, CE, UL, CUL, C-Tick, CCC, PSE, KC, GS, RoHS, WEEE

• One (1) LT-84 ListenIR Transmitter/Radiator Combo
• One (1) LA-210 12 VDC Universal Power Supply/Power Cord
• One (1) LA-344 Flexible Mounting Hardware
• Two (2) Phoenix Type Connectors
• One (1) LA-303 Multi-Lingual Assistive Listening Notification Sign
• One (1) Quick Start Guide