Teach Logic IRF-2650/CS4

The Teach Logic IRF-2650/CS4 is a sound-field system for classroom presentation. This system consists of an IMA-232 Amplifier/Receiver Base Station, IRT-60 Sapphire Microphone Transmitters with Lithium-ion Batteries, IRH-35 Handheld Infrared Transmitter/Microphone with NiMH Batteries, an ICS-55 Ceiling Sensor for IR connectivity throughout the room, and four CS-4 Ceiling Speakers. It also includes a BRC-55 Drop-In Charger for charging the Sapphire transmitters.

The IRF-2650/CS4 features a digital feedback guard (DFG) that eliminates acoustical feedback. The wireless Sapphire microphone has a capsule which allows maximum gain before feedback. It has a 50W Digital Hybrid Class D amplifier. The system allows remote adjustment of inputs via the RS-232 wall panel controller. The unit has two infrared wireless microphones which can be used simultaneously. It provides two auxiliary line inputs for multi-media integration with even distribution of sound for the audio in the classroom. The Forum 232 has a Line level output for lesson capture and another output for Assistive Listening System (ALS).

Forum 232 2-Channel Infrared Receiver/Amplifier Base Station with Switching Power Supply

The Forum 232 2-Channel Infrared Receiver/Amplifier Base Station with Switching Power Supply from Teach Logic is the nucleus of the Forum 232 Wireless Classroom Microphone System. This receiver is designed for use with the Sapphire or handheld microphone transmitters (all sold separately). These transmitters transmit the vocal signal via infrared light to the dome sensor (sold separately) installed on the ceiling. The signal is then sent via cable to the receiver input of the mixer/amplifier. The signal is detected and then processed through the power amplifier to the speakers.

The unit features RS-232 wall panel control of the line inputs, 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.

• Dual infrared wireless microphone receivers
• Two Power Amplifiers: Total 50W RMS Class D amplifier, 25W each channel
• Security alert output
• RS-232 wall panel control of line input levels
• Switchable computer anti-hum circuit with ON/OFF switch
• Teacher priority instantly attenuates all line inputs
• Three-band digital equalizer ±12dB
• Digital limiting
• Two stereo auxiliary inputs for DVD and computer/Aux
• Additional DVD input gain, adjustable +10 dB boost
• 3.5mm front-panel auxiliary input
• 3.5mm ALS output for assistive listening system with gain control on front panel
• 3.5mm REC output for lesson capture with gain control on front panel
• Powers up to 4 speakers (not included)
• Power sleep mode to conserve energy
• Rack or shelf mountable using optional kits (not included)
• Lightweight aluminum cover

Infrared Dome Sensor

Teach Logic'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.

• Easily installs on ceiling "T" bar with track bracket
• 6 large receiving diodes for infrared reception

IRT-60 Sapphire Infrared Transmitter/Microphone w/ Security Alert & Rechargeable Battery

Well suited for classrooms and forums, the rechargeable IRT-60 Sapphire Infrared Transmitter/Microphone from Teach Logic offers the same aesthetic design and feature set as the IRT-55 Sapphire, but with an additional remote "Security Alert", allowing teacher priority with instant attenuation of the line levels to work with the optional Forum 232 and Maxim III amplifiers. The Sapphire can be worn with a lanyard or clipped directly to your neckline collar and offers a high level output, reliable connectivity, and great definition. With a built-in breath filter, the Sapphire can function as a pass-around hand microphone. Tapping the power button momentarily mutes the microphone, allowing for private conversations. The 3.5mm auxiliary input allows wireless playback of your iPod, while a three-position slide switch provides selections of low, medium, or high microphone volume levels. The included Lithium-Ion battery offers up to 9 hours use. The Sapphire IRT-60 ships with a BRC-15 wall charger and a breakaway lanyard.

• Long-life Lithium-Ion battery
• Rechargeable via micro USB cable
• Battery level indicator, back light under power switch
• Momentary mute button, backlight blinks in mute mode
• Lightweight Design: 1.4 oz
• Push "on/off" power
• Channel A or B selectable
• Three level microphone volume switch (low, medium, high)
• Auxiliary input (3.5mm)
• Low profile clip for mounting
• Wear with a lanyard or directly to neckline collar
• Includes BRC-15 wall charger

Handheld Infrared Transmitter/Microphone with NiMH Batteries (Channel A and B)

Teach Logic'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.

• Condenser microphone element
• Power "on/off" switch
• Battery level indicator-LED
• 2-channel selectable
• 10 high-power emitting diodes
• Diodes at top and bottom of handle for increased coverage (2 top aimed out, 6 bottom 360°, 2 bottom aimed down)
• 360º IR radiation for assured connectivity

SP-628 Ceiling Speaker, Coaxial, 8 ohm, with Metal Back Can and Tile Bridge

Teach Logic's SP-628 Ceiling Speaker, Coaxial, 8 ohm, with Metal Back Can and Tile Bridge is a full range compact coaxial ceiling speaker that provides low distortion and a smooth natural frequency response, making it great for articulate vocal clarity. The speaker has an integrated steel back can along with a 24" tile bridge which allows for quick and easy installation. The speaker is ETL Plenum rated and conforms to UL2043 standard.

• Air sealed metal back can for an infinite baffle
• 6" cone driver with a 1" Mylar dome tweeter

BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters

Teach Logic's BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters is a drop-in charger for two Teach Logic Sapphire transmitters and one IRH-35 or IRH-40 handheld microphone/transmitter.

• Compatible with Teach Logic Sapphire and IRH-35/40 Microphones/Transmitters
• Charging Time is approximately 10-12 Hours
• Weigh about 1.75 lb (0.79 kg)