Listen Technologies, ListenIR 1-Channel Transmitter

Audio
Frequency Response: 63 Hz – 15 kHz (+/- 3 dB)
Signal-to-Noise Ratio: Mono: > 60 dBStereo: > 52 dB
System Distortion: < 2% total harmonic distortion (THD)
Audio Input 1: Mono Input (Rear Panel). Female-XLR and 1/4 in. combo connector, balanced, 0/-55 dBu (line/mic) nominal input level adjustable; +21/-30 dBu (line/mic) maximum input level; impedance 20k/1k ohms (line/mic); phantom power +12 VDC
Audio Input 2: Stereo or Mono Input (Rear Panel). Two (2) Phono connectors, unbalanced, -10/+10 dBu nominal input level adjustable, +30 dBu maximum, impedance 100k
Audio Processing: Compression can be turned on/off.
Contour: Cuts and boosts frequencies above 5 kHz
Monitor Output: Front panel. One (1) 3.5 mm (0.14 in.) connector, unbalanced, adjustable output level, +7 dBu maximum, impedance 10 ohms. 100 mW, 32 ohms
Output/s: Input 1 and Input 2 Mixed Output (Rear panel). Two (2) Phono connectors, unbalanced, -10 dBu nominal output level, +19 dBu maximum, impedance 10 ohms

Controls
Programming: Stereo on/off, Processing on/off
Front Panel: Power, Test Tone on/off, Channel up/down, Input Level, Transmit Level, Contour, Monitor Level
Rear Panel: Input 1 Level (Line, Mic, Mic-Phantom Power), Input 2 Level (-10/+10 dBu)
Internal Adjustments: Compression ratio for audio processor. Slope adjustable from 1:1 to 4:1. Default 2:1

Indicators
LCD: Channel designation, lock status, RF Carrier, programming (front panel)
Unit Power: Red LED illuminates when the unit is powered up (front panel)
Input 1, Input 2, Transmit Level: Indicates Input 1, Input 2, and Transmit audio levels. 10 segment LED’s (8 green, 2 red)
Stereo: Indicated by a green LED when on (front panel)
Processing: Indicated by a green LED when on (front panel)
RF Carrier: Indicates carrier is active on the LCD Display (front panel)
Test Tone: Red LED illuminates when test tone enabled (front panel)

RF
Input/s: One (1) BNC connector, for connection from additional transmitter(s). 50 mV, 50 ohm, -15 dBm
Output/s: Two (2) BNC connectors, for connection to radiator(s) and/or additional transmitter(s). 50 mV, 50 ohm, -15 dBm
Carrier Frequencies: 2.3 MHz, 2.8 MHz, 3.3 MHz, 3.8 MHz
Number of Channels: Four (4) channels. Selectable one (1) channel per transmitter (mono or stereo)
Frequency Accuracy: +/- .005% stability 0 to 50 °C
Carrier Shut Off: Carrier will shut off when no audio is present for 30 minutes to preserve radiator life.
Transmitter Stability: 50 PPM

Power
Power Supply: In-line switching mode power supply, Listen part number LA-205
Power Supply Input: 100-240 VAC, 47-63 Hz
Power Supply Output: 30 VDC, 1.5 A
Power Supply Connector: RJ-45
Power Output: Two (2) RJ-45 jacks. For remote powering up to two (2) radiators

Physical
Width: 21.5 cm
Height: 4.5 cm
Depth: 23 cm
Color: Dark Grey
Unit Weight with Power Supply: 1.72 kg
Rack Mounting: One (1) rack space high (1U), 1/2 rack space wide. One (1) or two (2) transmitters can be mounted in a single rack space. Optional Rack mount (LA-326) not included.
Weight: 1.18 kg

1 stk. ListenIR 1-Channel Transmitter
1 stk. 30 VDC Extension/Replacement Power Supply
1 stk. Interconnection Coaxial Cable
1 stk. Quick Reference Card