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Summary of Contents for TeachLogic Forum IMA-240
- Page 1 ™ Forum (IMA-240) Classroom Audio System Installation Manual...
- Page 2 We appreciate your confidence by your selection of our product. It is TeachLogic’s intent to uphold that confidence by providing factory assistance and reseller support. This manual will help you learn to use and gain the maximum benefit of the system.
- Page 3 Green. Save our resources and do not contaminate. charging conductors. Contact: Earth911.com 1-800-CLEANUP Certifications TeachLogic systems are manufactured using lead-free processes and are free of materials harmful to the environment. They conform to European RoHS guidelines for consumer products.
- Page 4 Date of Purchase Model Number Serial Number Notes Contact If you should encounter an unresolved issue, please contact the TeachLogic customer service department for further assistance. 760-631-7800 | support@teachtogic.com | teachlogic.com Limited warranty For full warranty details refer to teachlogic.com/warranty.
- Page 5 Contents System Overview .......................... 5 System Diagram ........................... 6 Installation ........................... 7 Installation Planning ........................7 Connection of Speakers ......................8-9 Installation of Ceiling Sensor ...................... 10 Integration ..........................11 Computer Anti-Hum ........................11 Video Conferencing Connection ....................12 Configuration ..........................13 Final Setup ..........................
- Page 6 ALS Output (3.5 mm) & Gain Control Powered IR Ceiling Sensor Inputs (RCA x 2) Three Band Equalizer Controls 5 Volt USB Output for chargers Computer Input Port (3.5 mm) / Computer Power Input: 19 VDC, 6.5 A Anti-Hum ON/OFF Switch www.teachlogic.com support@teachlogic.com | (760) 631-7800...
- Page 7 Forum ™ System Diagram www.teachlogic.com support@teachlogic.com | (760) 631-7800...
- Page 8 Integrations/Connections: Confirm location of other systems you plan to connect to the amplifier such as audio devices, computer, TV, projector, etc., noting how the wiring needs to run. Charger: Confirm microphone charging location for daily use/charging. www.teachlogic.com support@teachlogic.com | (760) 631-7800...
- Page 9 Wall Speakers: First observe the shape of the room: ceiling height, door locations, windows, mounting surface, and seating area. Ordinary installation would be to locate the speakers on each side wall beginning at the front row of listeners, approximately 6–7 feet above the floor. www.teachlogic.com support@teachlogic.com | (760) 631-7800...
- Page 10 The IMA-240 has two channels of amplified audio, rated for a minimum 4-ohm speaker load (two 8-ohm speakers each, connected in parallel provide 4 ohms impedance). There is one blue phoenix style speaker connector on the back panel, providing two pairs of speaker terminals. www.teachlogic.com support@teachlogic.com | (760) 631-7800...
- Page 11 Installation 3 – Wood Surface FINAL STEP: Route sensor cable to amplifier and plug into one of the amplifier’s two sensor inputs. An illuminated green LED will indicate that the sensor is receiving power from the amplifier. www.teachlogic.com support@teachlogic.com | (760) 631-7800...
- Page 12 Inside the amplifier is a ground isolating balun that may reduce or eliminate the hum when switched ON. If not needed, it is getter the leave switched OFF as the sound quality for the connected device will be slightly better in this case. www.teachlogic.com support@teachlogic.com | (760) 631-7800...
- Page 13 Video Conferencing Connection Forum ™ Video Conferencing Connection All media devices connected to the TeachLogic amplifier (including microphones) will be heard by online viewers. All audio—including devices connected directly to the computer—will play through the TeachLogic amplifier/receiver in the classroom. •...
- Page 14 • If using two IRT-60 microphones in the same room, one must be changed to channel B to avoid interference. Watch the how-to video on teachlogic.com/resources. Note: Next steps should be performed with a second person as the listener •...
- Page 15 “wake” the amplifier, but to hear the full first page of a morning, be sure to wake it first with one of the methods above since, or the initial several seconds may be missed if there are no other paging speakers provided to deliver the page audio. www.teachlogic.com support@teachlogic.com | (760) 631-7800...
- Page 16 Forum ™ Troubleshooting Troubleshooting Problem Solution System will not power “ON” Verify AC power; the power button will illuminate Blue when turned ON Check if system has been unplugged; reconnect to power outlet or use another device to ascertain power available at outlet Check circuit breaker Call maintenance for assistance System is turned “ON”...
- Page 17 Forum ™ Specifications Forum™ (IMA-240) Amplifier Output Power 50 W RMS, 2 x 25 W channels Receiver Input Infrared FM, 2 wireless mic channels Modulation Wide-band FM Reception Frequencies Ch. A: 2.08 MHz | Ch. B: 2.54 MHz Deviation 10 kHz Nominal, 25 kHz Maximum De-emphasis 50 µs Tone Key...
- Page 18 Forum ™ Specifications Sapphire (IRT-60) microphone/transmitter specs Transmission Carrier Infrared Transmission Frequencies 2.08 MHz & 2.54 MHz Channel Selection Field Switchable Transmitting Diodes Wavelength 850 nm Modulation FM Wide-Band Frequency Response 100 Hz - 10 KHz Pilotone Frequency 32.768 KHz Peak Deviation ±...
- Page 19 541 Main St. Longmont, Suite B, CO 80501 TeachLogic.com | Support@TeachLogic.com | 760-631-7800 P/N UMM-240 20220301...
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