Configured with permanent installations in mind, the Listen Technologies LS-54-072 iDSP Stationary RF System comes with everything needed to immediately integrate and offer high-quality assistive listening while meeting compliance requirements.
Beginning with the LT-800-072 Stationary RF Transmitter and LA-122 Universal Antenna Kit, the system allows you to configure and rack mount the antenna ideal for your system and setup.
Four LR-4200-072 iDSP Receivers are included as well, along with four universal ear speakers, two intelligent neck loops/lanyards, a four-port USB charger, RCA cable, and a notification signage kit. The result is a complete assistive listening system that provides outstanding audio performance and immediate compliance for your business or venue.
Listen Technologies LS-54-072 iDSP Prime Level II Features
- Advanced DSP SQTM 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
- 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
- LT-800-072-01 Stationary RF Transmitter (72 MHz)1
- LA-122 Universal Antenna Kit (72 MHz and 216 MHz)1
- LA-326 Universal Rack Mounting Kit1
- LR-4200-072 Intelligent DSP RF Receiver (72 MHz)4
- LA-401 Universal Ear Speaker4
- LA-430 Intelligent Earphone/Neck Loop Lanyard2
- LA-423 4-Port USB Charger1
- LPT-A107-B Dual RCA to Dual RCA Cable 6.6 ft. (2 m)1
- LA-304 Assistive Listening Notification Signage Kit1
- LT-800-072-01 72MHz Stationary RF Transmitter
- Audio
- Frequency Response: 50 Hz - 15 kHz (±3 dB)
- Signal-to-Noise Ratio: SQ enabled 80 dB, SQ disabled 60 dB
- 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, +21 / -30 dBu (line/mic) maximum input level, impedance 20k / 1k ohm (line/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 100k ohm
- 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
- Distortion: < 2% total harmonic distortion (THD) at 80% deviation
- 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 ohm
- Headphone Output: Front panel, one (1) 3.5 mm (0.14 in.) stereo connector, unbalanced, adjustable output level, +3 dBu maximum, impedance 10 ohm
- Controls
- User Controls: Front Panel: Power, test tone on/off, channel up/down, input levels, mix level, contour, monitor volume controlRear 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
- LCD: Channel designation, lock status, RF power level, programming (front panel)
- 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)
- Test Tone: Red LED illuminates when test tone is enabled.
- RF Power: Indicated on the LCD (low, mid, high)
- RF
- Frequency Range: 72.025 - 75.950 MHz
- Number of Channels: 17 wide band, 40 narrow band
- Frequency Accuracy: ± .005% stability +32º to +122 ºF (0º to +50 ºC)
- Antenna Type: Various antennas available
- Transmitter Stability: 50 PPM
- Transmission Range: Up to 305 m (1,000 ft.)
- Antenna Connector: BNC, 50 Ohms (Use RG-58 < 100 ft or RG-8 > 100ft)
- Output Power: 80,000 uV at 3 m
- Number of Simultaneous Transmitters: Up to 8
- Power
- 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 in (5.0 mm) OD, 0.01 in. (2.5 mm) ID, barrel type
- Compliance: UL, CE, GS, TÜV, RoHS
- Physical
- Dimensions (WxHxD): 8.5x1.75x9.13" (21.5x4.5x23cm)
- Color: Black with grey silk screening
- Unit Weight with Power Supply: 1.6 kg (3.5 lbs.)
- Shipping Weight: 2.7 kg (6.0 lbs.)
- 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, optional rack mount (LA-326)
- Weight: 1.2 kg (2.6 lbs)
- 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, noncondensing
- Compliance
- Safety: RoHS
- RF: FCC Part 15, Part 90, Industry Canada
- Audio
- LA-122 Universal Antenna Kit
- Interconnections: BNC
- RF
- Frequency Range: 72 MHz - 72.025 MHz - 75.975 MHz216 MHz - 216.0125 MHz - 216.9875 MHz
- Number of Channels: 72 MHz - 57 (17 wide band, 40 narrow band)216 MHz - 57 (19 wide band, 38 narrow band)
- Antenna Type: Monopole and Dipole
- Unity Gain: 0 dB
- Typical Range: Range up to 305 m / 1,000 ft @72 MHz, 914 m / 3,000 ft @216 MHz.
- Physical
- Shipping Weight: 3.20 kg (7.0 lbs.)
- Mounting: Wall mount, dual and single electrical box, ceiling electrical box, horizontal surface mount (such as on top of a rack), ceiling/inverse mounting, flexible mounting in-wall or in ceiling and mast or conduit mount.
- Mounting: Includes self-tapping sheet metal screws, drywall anchors, and all hardware required to mount to electrical boxes. Does not provide hardware required to mount to a mast (available at most hardware stores).
- Mounting Dimensions (WxDxH): Bracket - 11x18x6.4cm (4.5x7x2.5"); Grounding Base - 20.4x20.4x5.1cm (8x8x2"); Mounting Plate - 11.4x11.6 (4.48x4.55")
- Dipole Vertical Length: 72 MHz - 203.2 cm (80"), 216 MHz - 68.6cm (27 in.)
- Weight: 2kg (4.4 lbs)
- LA-326 Universal Rack Mounting Kit
- Shipping Weight: 5 lbs. (2.3 kg)
- Dimensions (HxWxD): Rack Mount: 19x1.75x8" (48.3x4.4x20.3cm); Shipping Box: 14.2x2.95x10.6" (36x7.5x27cm)
- Weight: 4.4 lbs (2kg)
- LR-4200-072 Intelligent DSP RF Receiver
- Audio
- 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 ohm
- System Frequency Response: 50 Hz - 15 kHz (±3 dB)
- System Signal to Noise Ratio: SQ enabled 80 dB, SQ disabled 60 dB
- Controls
- User Controls: Power, up/down volume
- Programming: Via software and USB port
- Set-up Controls: Press and hold up/down volume buttons for 5 seconds to enter channel adjust, use up/down to select channel
- Indicators
- LEDs: Flashes when batteries are low or to indicate charging, solid when fully charged
- Display: Channel designation, battery level, unit number, charging status
- RF
- Frequency Range: 72.0250 - 75.9500 MHz
- Number of Channels: 17 wide band, 40 narrow band
- Sensitivity: .6uV typical, 1 uV maximum for 12 dB sinad
- Frequency Accuracy: ± .005% stability 32 to 122 ºF (0 to 50 ºC)
- Squelch: Programmable in 20 steps, automatic on loss of RF signal
- Antenna Type: Uses earphone/neck loop lanyard and short ear phone cable or standard earphone cable
- Power
- Power Supply: Micro USB connector, 5 V, 500 mA
- Battery Type: Lithium Ion 3.7 Vdc, 1200 mAh
- Battery Life: 8 Hours of continuous use
- Battery Charging Time: Fully charged in 2.5 Hours
- Physical
- Color: Black
- Unit Weight with Batteries: 2.4 oz. (68 g)
- Shipping Weight: 3.2 oz. (91 g) with 1 lbs (454 g) minimum; unit weight: 1.6 oz. (45 g)
- Dimensions (HxWxD): 3.75x2x0.64" (9.6x5x1.7cm); with belt clip: 3.75x2x0.8" (9.6x5x2.1cm)
- 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
- Audio
- LA-401 Universal Ear Speaker
- Audio
- Frequency Response: 20 Hz - 20 kHz
- Impedance: 32 ohm +/- 15% @ 1 kHz
- Input Sensitivity: 115 dB +/- 4dB @ 1 kHz, 1 mW
- Rated Power Input: 50 mW
- Max Power Input: 100 mW
- Interconnections: Male 3.5 mm (TRS)
- Physical
- Color: Dark Gray
- Shipping Weight: 1 lbs (454g)
- Cable Length: 13" (33cm), extension cable is 28" (71 cm)
- Unit Weight: 0.4 oz (11g)
- Compliance Standards: RoHS
- Audio
- LA-430 Integrated Neck Loop
- Interconnections
- Connection to Receiver: Male 3.5 mm (TRRS) to Male 3.5 mm (TRRS)
- Connection to Short Ear Phone: Female 3.5 mm (TRS)
- Loop
- Neck Loop Field Strength: 400 mA/m (+/- 3dB)
- Neck Loop Frequency Response: 100Hz to 5kHz (+/- 3 dB ref 1kHz)
- Physical
- Color: Black
- Shipping Weight: 1 lbs. (454 g)
- Cord Length: 29" (74 cm)
- Unit Weight: 1.5 oz. (43 g)
- Compliance Standards: RoHS, IEC60118-4
- Interconnections
- LA-423 USB Charger
- Power
- Power Supply Input: 100-240 V, 50-60 Hz, 0.5 A
- Power Supply Output: 5.0 VDC, 4.2 A
- Physical
- Color: Black
- Shipping Weight: 1 lbs. (454g)
- Cable Length: 36" (92cm)
- Cable Type: 4 - USB to Micro USB Cables (LA-422)
- Dimensions (HxWxD): 2.44x2.9x1.13" (62x74x29mm)
- Unit Weight: 7.8 oz (221g)
- Compliance Standards: UL, FCC, RoHS, CE. RCM
- Power
- LPT-A107B Cable
- Interconnections: Dual RCA (male) to Dual RCA (male)
- Physical
- Shipping Weight: 1 lb (0.5kg)
- Cable Length: 6.6 ft (2m)
- Unit Weight: 1.75 oz (49g)
- LA-304 Signage Kit
- Shipping Weight: 1 lb (0.5 kg)
- Weight 6 oz. (170 g)
- Dimensions Hard Plaque: 7x10” (178x254 mm); Soft Cling: 7x10” (178x254 mm)
