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The IRF-2650 Forum 232 Wireless Microphone System with Four Wall Mount Speakers from TeachLogic is a sound-field system designed for teachers in a classroom environment. The IRF-2650 features a Digital Feedback Guard (DFG) to eliminate 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 Forum 232 allows for remote adjustment of inputs via the RS-232 wall panel controller. The unit has two infrared wireless microphone receivers which can be used simultaneously. The IRF-2650 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).
The Forum 232 comes with the Sapphire microphone transmitter and a rechargeable lithium-ion battery. The Sapphire transmitter can be worn with a lanyard or clipped directly to your neckline collar. It has high level output, reliable connectivity and great definition. With a tap on the power button, the microphone mutes for private conversation-tap again to restore to normal operation. The auxiliary input allows wireless playback of your iPod. A three-position slide switch provides selection of low, medium, or high microphone volume levels.
The Forum 232 IRF-2650 includes four two-way wall mount speakers, a handheld transmitter/microphone with Duracell NiMH batteries, a ceiling sensor for IR connectivity and a drop-in battery charger.
Two infrared wireless Microphone receivers
Two Power Amplifiers for a total 50 watts RMS class D amplifier
Security Alert Output
RS232 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
Two stereo auxiliary inputs for DVD & Computer/Aux
Additional DVD input gain, adjustable +10 dB boost
Front-panel auxiliary input 3.5mm jack
Front Panel ALS 3.5mm jack output for Assistive Listening system with gain control
Front Panel REC 3.5mm jack output for lesson capture with gain control
Power sleep mode to conserve energy
TeachLogic IRF-2650 Specs
Channel A: 2.08 MHz
Channel B: 2.54 MHz
Channel A: 32.768 kHz
40 Hz - 18 kHz, ± 3 dB
Total Harmonic Distortion (THD)
‹1% @ 1 kHz
± 10 kHz
± 25 kHz
2 x RCA inputs
1 x DVD, Line Level, Dual RCA with +10 dB gain control
1 x Aux input with front and rear panel 3.5 mm
2 x 3.5 mm jack with gain control, front panel
Three-band digital ±12 dB
2 x digital amplifiers, 50 W total (RMS), 25 W each