The IRS-8650 Spectrum III Wireless Classroom Microphone System from TeachLogic is a digital hybrid sound-field system for use in the classroom. This system comprises the IMA-820 Spectrum III Amplifier/Receiver Base Station, IRT-60 Sapphire Microphone/Transmitter with lithium-ion battery for voice transmission, IRH-35 Handheld Microphone/ Transmitter with Duracell NiMH batteries, ICS-55 Ceiling Sensor for IR connectivity throughout the room, and four SP-628 Ceiling-Mount Speakers. It also includes a BRC-55 Drop-In Battery Charger for charging both the Sapphire and handheld microphone/transmitters. The system can be added to an existing multi-media system for expanding its utilization to provide voice reinforcement.
The Spectrum III Amplifier/Receiver Base Station features dual IR receivers, four 100W Class D amplifiers, digital equalization, and digital limiting, providing freedom of movement and allowing simultaneous use of two microphones (one Sapphire microphone/transmitter and handheld microphone/ transmitter included). When combined with the Sapphire transmitter, the Spectrum III base station delivers several key features such as Security Alert circuit, Teacher Voice Priority, and Remote volume control for line inputs. The four auxiliary inputs provide multi-media integration with even distribution of sound for all audio in the classroom. The IRH-35 Handheld Microphone/Transmitter can be used by students for interactive class participation.
The ICS-55 Dome Sensor collects the IR wireless signal from the microphone/transmitter via 6 large detecting diodes and sends a composite signal to the receiver the IMA-820 Spectrum III Amplifier/Receiver Base Station via the included 50' plenum-rated cable. The ideal location for the sensor would be in the center of the ceiling, providing a clear signal path for the IR transmission from the transmitter without obstruction.
The receiver transforms this composite signal into an analog audio signal which is fed to the multimedia amplifier. The amplifier powers the four SP-628 Ceiling Speakers (included) for even voice reinforcement throughout the room. Each of the SP-628 Full-Range Compact Coaxial Ceiling Speaker provides low distortion and a smooth natural frequency response. Each speaker has an integrated steel backcan and comes with a 24" tile bridge which allows for quick and easy installation.
TeachLogic IMA-820 Spectrum III 4-Channel Receiver / Amplifier Base Station with Switching Power Supply
The IMA-820 Spectrum III 4-Channel Receiver / Amplifier Base Station with Switching Power Supply from TeachLogic features four auxiliary inputs, dual IR receivers, page pass-through, and a 100W amplifier. This receiver has 100W of power for large rooms or rooms with high ambient sound levels. It helps create a good intelligible learning environment over a large area with up to 8 ceiling or wall speakers (available separately).
The four auxiliary inputs provide multimedia integration with even distribution of sound for all audio in the classroom. The unit also features RS-232 wall panel control of the line inputs, fire alarm connection (AC or DC), remote teacher security alert, teacher priority with instant attenuation of the line levels via Sapphire IRT-60 pendant mic (available separately), DFG (Digital Feedback Guard), and switchable anti-hum circuit on the computer input.
TeachLogic Infrared Dome Sensor
TeachLogic's Infrared Dome Sensor needs to be installed on the ceiling at least 3' from the video projector. It comes with a mounting/support bracket and 50' of plenum rated cable with RCA connector on each end. The ideal location for the dome sensor would be in the center of the ceiling. This will provide a clear signal path for the IR transmission from the transmitter to the dome sensor without obstruction. In addition, you will have 360° coverage and will minimize the transmission distance for more reliable performance. It collects the infrared transmission signal via 6 large detecting diodes. The sensor is connected to the mixer/amplifier via a plenum rated cable terminated with RCA connectors. The mixer/amplifier supplies the power to the sensor.
TeachLogic IRT-60 Sapphire Infrared Microphone with Plug-In Charger
The TeachLogic IRT-60 Sapphire is a compact and lightweight infrared microphone that can be worn around your neck or clipped to clothing, making it well suited for teachers, instructors, and lecturers. Its cardioid polar pattern delivers focused vocal clarity with minimal ambience while the built-in breath filter reduces plosives and the integral rubber shock suspension impedes vibrations. The internal lithium-ion battery provides up to eight hours of use and conveniently recharges via the supplied BRC-15 plug-in charger.
The ITR-60 Sapphire also features a 3.5mm stereo aux input to accommodate an external source such as a smartphone, an MP3 player, or a headworn mic. The mic gain and amplifier volume are adjustable, so you can effectively optimize the signal level. The power button doubles as an easy mute on/off function. When the IRT-60 Sapphire is used with a compatible amplifier/receiver, the switchable teacher priority automatically lowers the audio volume of aux/line inputs upon detection of incoming mic signal.
- Utilizes infrared transmission on 2.08 or 2.54 MHz
- Operating range up to 60'
- Cardioid (unidirectional) polar pattern yields enhanced vocal clarity
- Built-in breath filter and integral rubber shock suspension
- Only 1.4 ounces including battery
- Internal lithium-ion battery provides up to 8 hours of operating time
- Rechargeable via micro-USB or BRC-60 charging dock (available separately)
- Battery level indicator
- Backlight under power switch
- Momentary mute button
- Backlight blinks in mute mode
- Push on/off power
- Channel A or B selectable
- 3-level high/mid/low mic volume switch (normal, - 3 dB, -6 dB)
- 3.5mm stereo auxiliary input for audio device or headworn mic
- Low-profile clip for mounting to lapel or pocket
- Adjustable lanyard and BRC-15 plug-in charger included
- Security alert activation (press/hold priority button for five seconds)
- Teacher "priority" control over aux/line inputs (lowers audio volume)
- Priority switch only functions with the Matrix, Forum 232, Maxim III, and Spectrum III amplifier/receiver
- Multicolor LED: no light (power off), solid blue (power on), blinking blue (mic is muted), solid red during use (low battery), solid red during charging (charging in progress), solid green during charging (fully charged), solid purple (audio devices connected to the receiver have been quieted)
- Suitable replacement for IRT-55 and IRT-89 infrared microphones
TeachLogic Handheld Infrared Transmitter/Microphone with NiMH Batteries (Channel A and B)
TeachLogic's Handheld Infrared Transmitter/Microphone with NiMH Batteries (Channel A and B) has an ergonomic design that provides user comfort and very low handling noise. The unidirectional condenser reproduces excellent vocal quality and the windscreen prevents breath pops. The emitting diodes are located around the top and bottom end of the handle for 360° transmission and assured connectivity throughout the classroom. Two rechargeable NiMH batteries are included.
TeachLogic BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters
TeachLogic's BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters is a drop-in charger for two TeachLogic Sapphire transmitters and one IRH-35 or IRH-40 handheld micrphone/transmitter.