LS-88-01 Portable ListenIR iDSP System (North America)
Furnish an iDSP portable IR assistive listening system for use by the hearing-impaired. The assistive listening system (ALS) shall be capable of broadcasting up to two (2) audio channels with the choice of four (4) mono carrier frequencies; 2.3, 2.8, 3.3 and 3.8 MHz. The system coverage area shall be up to 30,000 ft² (2787 m²) with single channel transmission. The system shall have a SNR of 60 dB or better and THD of less than 2%. The system shall have an audio frequency response of 63 Hz to 15 kHz, +/- 3db. The system shall include an omnidirectional table top microphone for audio pickup in the room. The system shall be transported or stored in a portable carrying case when the system is not in use.
The system receivers shall be capable of receiving on one (1) of four (4) wide band channels (carriers), (2.3 MHz), (2.8 MHz), (3.3 MHz) and (3.8 MHz). The receivers shall be tuned to a single channel and users shall not be able to change the channel. The receivers shall have the option of being lanyard or belt clip worn and the lanyard shall incorporate an integrated neck loop for compatibility with T-coil hearing aids. The receivers shall be intelligent and provide customized audio to either earphones or the integrated neck loop based upon which is connected. The receivers shall have two (2) 3.5 mm (TRRS) connectors to drive the integrated neck loop lanyard or up to two (2) mono or stereo earphones. The receivers shall incorporate a multi-functional display (OLED) that indicates battery status, inventory number, volume level and a customizable channel name. The receivers shall employ a unique iDSPTM noise reduction technology. The receivers shall be fully programmable via PC software. The receivers shall have a micro USB connector used for programming/setup, inventory control, charging and firmware upgrades. The receivers shall incorporate automatic battery charging circuitry and use a non-proprietary lithium ion battery. The receivers shall automatically turn on when removed from the charging device and automatically turn off when returned to the charging device.
The LS-88 is specified and includes:
One (1) LT-84-01 ListenIR Transmitter/Radiator Combo
Two (2) LR-4200 IR Intelligent DSP IR Receiver
Two (2) LA-430 Intelligent Ear Phone/Neck Loop Lanyard
Two (2) LA-401 Universal Ear Speaker
One (1) LA-277 Conference Microphone
One (1) LA-338 Table Top Tripod
One (1) LA-346 Carrying Case
One (1) LA-423 4-Port USB Charger