Listen Technologies iDSP Essentials Stationary RF System ADA Compliant Assistive Listening | Beginner | 72 MHz | Standard
Listen Technologies iDSP Essentials Stationary RF System ADA Compliant Assistive Listening | Beginner | 72 MHz | Standard
SoundPro Item: 57594 | Part Number: LS-30-072
Usually ships in 5-7 business days
- Three Selectable Channels Enable Multi-Room Installations Without Interference
- Intelligent DSP Receivers Prevent Frequency Drift For Consistent Signal Lock
- Universal Ear Speakers And Neck Loop Lanyards Accommodate User Preferences
- Telescoping Antenna Optimizes Coverage For Irregular Room Geometry
- Included Notification Signage Kit Satisfies ADA Posting Requirements
The Listen iDSP Essentials Stationary RF System delivers a complete assistive listening solution for facilities serving fewer than 50 patrons. Designed for houses of worship, courtrooms, and community centers requiring 2010 ADA compliance, the system provides crystal-clear audio through digital signal processing and three-channel operation that minimizes interference in multi-room installations.
The included transmitter accepts universal audio inputs and broadcasts across the 72 MHz band with 62 dB signal-to-noise ratio. Two intelligent DSP receivers maintain digital tuning lock to prevent channel drift during services or proceedings. Telescoping antenna placement and included signage kit enable integrators to meet accessibility mandates while maintaining professional aesthetics. USB charging infrastructure and lanyards streamline patron checkout and return workflows.
This entry-level configuration suits venues transitioning from outdated infrared systems or implementing assistive listening for the first time. Listen Technologies backs the system with 30-day demonstration programs and technical support for installers managing compliance-driven retrofits.
- LT-803-072-01 Transmitter
- Audio
- Frequency Response: 50 Hz - 15 kHz (±3 dB)
- Signal-to-Noise Ratio: 62 dB (A-Weighted)
- Audio Input 1: Rear panel, one (1) Female XLR and 1/4 in combo connector, balanced, 0 / -55 dBu (line/mic) nominal input level adjustable, -30 / +21 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: Process on/off, channel lock
- Indicators
- LCD: Channel Designation, lock status, RF power level (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: (A) 72.100, (E) 72.900, (H) 75.900
- Number of Channels: 3 wide band
- Frequency Accuracy: ± .005% stability 0 to 50ºC (32 to 122º)
- 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
- 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: 5.0 mm (0.02 in.) OD, 2.5 mm (0.01 in.) ID, barrel type
- Compliance: UL, CE, GS, TÜV, RoHS
- Physical
- Dimensions (WxHxD): 8.5x1.75x9.13" (21.5x4.5x23cm)
- Color: Dark Grey with white silk screening
- Unit Weight with Power Supply: 2kg (4.5 lbs)
- Shipping Weight: 2.7kg (6 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: 1.2kg (2.6 lbs)
- Environmental
- Temperature - Operation: -10ºC (14ºF) to +40ºC (104ºF)
- Temperature - Storage: -20ºC (-4ºF) to +50ºC (122ºF)
- Relative Humidity: 0 to 95% relative humidity, non condensing
- Compliance
- RF: FCC Part 15, Part 90, Industry Canada
- Audio
- LA-106 Telescoping Top Mounted Antenna
- Interconnections
- Thread Diameter: 10-32
- RF
- Frequency Range: 72.025 - 75.950 MHz
- Number of Channels: 57 (17 wide, 40 narrow)
- Typical Range: Range up to 198 m / 650 ft.
- Physical
- Length: 99 cm (39.00 in.)
- Color: Black
- Shipping Weight: 0.5 kg (1 lb)
- Diameter: 1.3 cm (0.31")
- Weight: 31g (1.10 oz)
- Interconnections
- LR-3200-072 Basic DSP RF Receiver
- Audio
- System Distortion: < 1% total harmonic distortion (THD) at 80% deviation
- Output(s): Two (2) 3.5 mm (0.14 in.) connectors, unbalanced, 0 dBu nominal output level, 50 mW maximum, impedance 32 ohm
- System Frequency Response: 50 Hz - 15 kHz (±3 dB)
- System Signal to Noise Ratio: SQ disabled 70 dB, SQ enabled 80 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
- RF
- Frequency Range: 72.0250 - 75.9500 MHz
- Number of Channels: Basic Mode: 3 wide Band; Expand Mode: 17 wide band
- Sensitivity: .6uV typical, 1 uV maximum for 12 dB sinad
- Frequency Accuracy: ± .005% stability 32 to 122 ºF (0 to 50 ºC)
- Squelch: Fixed level, automatic on loss of RF signal
- Antenna Type: Uses earphone/neck loop lanyard and short ear phone cable or standard earphone cable
- Power
- Battery Type: Lithium Ion 3.7 Vdc, 1200 mAh
- Battery Life: 24 Hours of continuous use
- Battery Charging Time: Fully charged in 2.5 Hours
- Power Supply: Micro USB connector, 5 V, 500 mA
- Physical
- Color: Black
- Unit Weight: 1.6 oz. (45 g); with batteries 2.4 oz. (68 g)
- Shipping Weight: 3.2 oz. (91 g) with 1.0 lbs. (454 g) minimum
- Dimensions (HxWxD): 3.75x2x0.64" (9.6x5x1.7 cm); with belt clip: 3.75x2x0.8" (9.6x5x2.1 cm)
- 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 Class B, Industry Canada ICES-3 (B), 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
- 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-423-01 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 (454 g)
- Cable Length: 36" (92 cm)
- Cable Type: 4 - USB to Micro USB Cables (LA-422)
- Dimensions (HxWxD): 2.44x2.9x1.13" (62x74x29 mm)
- Unit Weight: 7.8 oz. (221 g)
- Compliance Standards: UL, FCC, RoHS, CE. RCM
- Power
- 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)
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