When you need for a powerful sound-field system package for classroom presentation, The IRM-5150 Maxim III Sapphire System from Teach Logic is the answer. This system includes base station 100-watt amplifier/mixer with automatic energy saving "sleep" mode, two infrared microphone receivers, four line inputs, lesson capture output, ALD output, intercom page pass through, digital feedback guard (DFG), five band equalizer, RS-232 connection for control panel (IMA-520), Sapphire (with security alert, teacher priority and remote input volume control) and Lithium battery (IRT-60), ceiling dome sensor with 50' plenum-rated cable (ICS-55), battery charger (BRC-15) and choice of speaker package: four ceiling speakers (SP-628), four wall mount speakers (SP-2000) or four Lay-in ceiling speakers (SP-628L) including 100' of plenum-rated 18ga. speaker cable.

The Maxim III sound system is the premiere digital hybrid sound-field system for use in the classroom. The four auxiliary inputs provide multimedia integration with even distribution of sound for all audio in the classroom. RS-232 wall panel control of the line inputs, Fire alarm mute connection (AC or DC), remote teacher security alert, teacher priority with instant attenuation of the line levels via Sapphire IRT-60 pendant and Digital Feedback Guard (DFG) and switchable computer anti-hum circuit on computer input. The Maxim III also features an output for recording the day’s lesson capture.

The Sapphire microphone / transmitter (IRT-60) is a stylish new lightweight classroom microphone. So small, it’s hardly noticeable to wear. It can be worn with a lanyard or clipped directly to your neckline collar. In performance, the Sapphire’s vocal clarity is unsurpassed. It boasts high level output, reliable connectivity and exceptional definition. With a built-in breath filter, the Sapphire can function as a pass-around hand mic. It also features security alert, teacher priority and remote input volume control.

The ceiling sensor (ICS-55) is the preferred infrared sensor for optimum performance. It comes standard with Forum, Maxim III, Spectrum II, VoiceLink I, VoiceLink Plus, VoiceLink III and VoiceLink IV packages. This unit needs to be installed on the ceiling at least 3'-0" from the video projector. It comes with a mounting/support bracket and 50 feet 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.

The ceiling speaker (SP-628) is a full range compact coaxial ceiling speaker, providing low distortion and a smooth natural frequency response ideal for articulate vocal clarity. The SP-628 has integrated steel backcan along with 24" Tile Bridge which allows for quick and easy installation.

The wall mount speakers (SP-2000) is a full range 2-way compact wall mount/shelf mount speaker, providing low distortion and a smoother frequency response ideal for articulate vocal clarity for more even coverage. The included wall-mount bracket enables the unit to be secured against a wall or other flat surface.
 
The lay-in ceiling speaker (SP-628L) is a full range compact coaxial ceiling speaker, providing low distortion and a smooth natural frequency response ideal for articulate vocal clarity. The SP-628L is a complete loudspeaker assembly, with 12″ frame, perforated steel grill, and integrated steel back can and attached “T” bar for finish edge. It also provides quick installation with minimal tile cutting. It includes 100' of plenum-rated speaker cable.

This package also includes plug-in battery charger (BRC-15) used for Sapphire microphone / transmitter (IRT-60).