Product Overview
Listen makes it easy to add assistive listening to your venue with their Prime level packaged systems.
A Prime level II system, the LS-54-072 expands upon the LS-53 system by adding a universal antenna and rack mount kit. The included LR-4200 iDSP (intelligent digital signal processing) receiver means users with tele-coil hearing devices will enjoy an improved listening experience, and dual 3.5mm outputs allow two listeners to share a single unit. An OLED display shows device settings, channel information, and battery level, allowing you to check system status at a glance. The LS-54 includes all of the needed system components and compliance verification you need to function right out of the box.
After a simple set up you'll have a system that's suited to a wide range of audio applications lecture halls, public meeting rooms, playhouses, theaters, and more. Universal inputs on the transmitters ensure you can use the LS-54 with your preferred audio source; mixer, microphone, iPod or CD. Your users will enjoy Listen's Super Quiet technology that delivers audio with 20dB less noise than competing systems, leaving them with a more memorable overall experience.
The LS-54-072 comes with Listen's LR-4200 receiver that operates only in the 72 MHz frequency range.
Listen Technologies LS-54-072 Includes:
- One (1) LT-800-072-01 Stationary RF Transmitter (72 MHz)
- One (1) LA-122 Universal Antenna Kit (72 MHz and 216 MHz)
- One (1) LA-326 Universal Rack Mounting Kit
- Four (4) LR-4200-072 Intelligent DSP RF Receiver (72 MHz)
- Four (4) LA-401 Universal Ear Speaker
- Two (2) LA-430 Intelligent Earphone/Neck Loop Lanyard
- One (1) LA-423 4-Port USB Charger
- One (1) LPT-A107-B Dual RCA to Dual RCA Cable 6.6 ft.(2 m)
- One (1) LA-304 Assistive Listening Notification Signage Kit
Listen Technologies LS-54-072 Features:
- Advanced DSP SQT noise reduction technology delivers 20 dB less noise and hiss than any other listening device
- Integrated neck loop / lanyard with DSP loop driver improves the listening experience for T-coil users
- Smallest device of its kind makes it easier to wear and for venues to dispense, store and maintain
- Limited Lifetime Warranty with hassle-free support
- Advanced green battery technology dramatically reduces costs of ownership and hassles while reducing the number of batteries in the landfill
- Ensures public venues deliver an exceptional listening experience while meeting new legislative requirements for assistive listening
Listen Technologies LS-54-072 Specifications:
- LT-800-072-01 Transmitter:
- Audio:
- Frequency Response: 50 Hz - 15 kHz (+/- 3 dB)
- Signal-to-Noise Ratio: SQ enabled 80 dB, SQ disabled 60 dB
- Distortion: < 2% total harmonic distortion (THD) at 80% deviation
- Audio Input 1: Rear panel, one (1) Female XLR or 1/4 in combo connector, balanced, 0 / -55 dBu (line/mic) nominal input level adjustable, -30 / +21 dBu (line/mic) maximum input level, impedance 20 kOhms (line) /1 kOhms (mic), phantom power +12 VDC
- Audio Input 2: Rear panel, two (2) phono connectors, unbalanced, -10 / +10 dBu nominal input level adjustable, +30 dBu maximum, impedance 100 kOhms
- Audio Processing: Compression can be turned on/off, slope internally adjustable from 1:1 to 4:1, default 2:1
- Contour: Cuts and boosts frequencies above 5 kHz
- Audio Output: Input 1 and input 2, mixed output (rear panel), two (2) phono connectors, unbalanced, -10 dBu nominal output level, +15 dBu maximum, impedance 10 Ohms
- Headphone Output: Front panel, one (1) 3.5 mm (0.14 in.) stereo connector, unbalanced, adjustable output level, +3 dBu maximum, impedance 10 Ohms
- Controls:
- User Controls: Front Panel: Power, test tone on/off, channel up/down, input levels, mix level, contour, monitor volume control Rear Panel: Input 1 Level, (Line, Mic, Mic-Phantom Power), Input 2 level (10 / +10 dBu), RF power level (low, mid, high)
- Internal Adjustments: Compression ratio for audio processor
- Programming: SQ on/off, process on/off, channel lock
- Indicators:
- Audio Input Status LEDs: Indicates Input 1, Input 2, and Mix audio levels; 10 segment LED's (8 green, 2 red)
- Processing: Indicated by a green LED when on (front panel)
- RF Power: Indicated on the LCD (low, mid, high)
- LCD: Channel designation, lock status, RF power level, programming (front panel)
- Test Tone: Red LED illuminates when test tone is enabled.
- RF:
- Frequency Range: 72.025 - 75.950 MHz
- Number of Channels: 17 wide band, 40 narrow band
- Number of Simultaneous Transmitters: 6
- Frequency Accuracy: +/- .005% stability +32º to +122 ºF (0º to +50 ºC)
- Transmitter Stability: 50 PPM
- Transmission Range: Up to 1,500 ft. (457 m)
- Output Power: 80,000 uV at 3 m
- Antenna Type: Various antennas available
- Antenna Connector: BNC
- Power:
- Compliance: UL, CE, GS, TÜV, RoHS
- Power Supply: In line power supply, Listen part number LA-207 (Line cord is determined by the each Country's AC power standards)
- Power Supply Input: 100-240 VAC, 50-60 Hz, 0.4 A
- Power Supply Output: 12 VDC, 1.3 A, 15.6 W
- Power Supply Connector: 0.02" (5.0mm) OD, 0.01" (2.5mm) ID, barrel type
- Physical:
- Dimensions (HxWxD): 1.75" x 8.50" x 9.13" (4.5cm x 21.5cm x 23cm)
- Color: Dark Grey with white silk screening
- Weight: 2.6 lbs. (1.2 kg)
- Unit Weight with Power Supply: 3.5 lbs. (1.6 kg)
- Rack Mounting: One (1) rack space height, 1/2 rack space wide. One (1) or two (2) transmitters can be mounted in one rack space, rack mount (LA-326)
- Environmental:
- Temperature - Operation: -10 ºC (14 ºF) to +40 ºC (104 ºF)
- Temperature - Storage: -20 ºC (-4 ºF) to +50 ºC (122 ºF)
- Relative Humidity: 0 to 95% relative humidity, non condensing
- Compliance:
- Safety: RoHS
- RF: FCC Part 15, Part 90, Industry Canada
- LR-4200-072 Receiver:
- Audio:
- System Frequency Response: 50 Hz - 15 kHz (+/- 3 dB)
- System Signal to Noise Ratio: SQ enabled 80 dB, SQ disabled 60 dB
- System Distortion: < 2% total harmonic distortion (THD) at 80% deviation
- Output/s: Two (2) 3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level, 16 mW maximum, impedance 32 Ohms
- Controls:
- User Controls: Power, up/down volume
- Set-up Controls: Press and hold up/down volume buttons for 5 seconds to enter channel adjust, use up/down to select channel
- Programming: Via software and USB port
- Indicators:
- Display: Channel designation,battery level, unit number, charging status
- LEDs: Flashes when batteries are low or to indicate charging, solid when fully charged
- RF:
- Frequency Range: 72.0250 - 75.9500 MHz
- Number of Channels: 17 wide band, 40 narrow band
- Sensitivity: 0.6uV typical, 1 uV maximum for 12 dB sinad
- Frequency Accuracy: +/- 0.005% stability 32 to 122 ºF (0 to 50 ºC)
- Antenna Type: Uses ear phone/neck loop lanyard and short ear phone cable or standard earphone cable
- Squelch: Programmable in 20 steps, automatic on loss of RF signal
- Power:
- Battery Life: 8 Hours of continuous use
- Power Supply: Micro USB connector, 5 V, 500 mA
- Battery Type: Lithium Ion 3.7 Vdc, 1200 mAh
- Battery Charging Time: Fully charged in 2.5 Hours
- Physical:
- Dimensions (HxWxD): 3.75" x 2.00" x 0.64" (9.6 x 5 x 1.7 cm)
- Dimensions with Belt Clip: 3.75" x 2.00" x 0.80" (9.6 x 5.0 x 2.1 cm)
- Unit Weight: 1.60 oz. (45 g)
- Unit Weight with Batteries: 2.40 oz. (68 g)
- Shipping Weight: 3.20 oz. (91 g) with 1.0 lbs. (454 g) minimum
- Color: Black
- Environmental:
- Temperature - Operation: 14 to 104 ºF (-10 to 40 ºC)
- Temperature - Storage: (-)4 to 122 °F (-20 to 50 °C)
- Relative Humidity: 0 to 95% relative humidity, non-condensing
- Compliance Standards: FCC Part 15, Part 90, Industry Canada, RoHS
