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The Forum 232 2-Channel Infrared Receiver/Amplifier Base Station with Switching Power Supply from TeachLogic 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
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
In the Box
TeachLogic Forum 232 2-Channel Infrared Receiver/Amplifier Base Station with Switching Power Supply
Limited 5-Year Warranty
Table of Contents
Channel A: 2.08 MHz
Channel B: 2.54 MHz
Channel A: 32.768 kHz
40 Hz, -18 kHz, ± 3 dB
> 65 dB
< 1% @ 1 kHz
± 10 kHz
± 25 kHz
External: 2 x RCA
Coverage: 1,600 sq. ft
1 x DVD, line level, dual RCA with +10dB gain control
1 x Aux input with front and rear panel 3.5mm
2 x 3.5mm with gain control on front panel
3-Band ±12 dB
2 x Digital amplifiers, 25 W each (RMS) 50 W total (RMS)
4 Ω minimum per channel
1 x Phoenix connector
19 VDC / 3.4 A
CE, CSA, and UL listed
Dimensions (W x H x D)
8.5 x 1.7 x 7.5" (215.9 x 43.1 x 190.5 mm)
1.5 lb (0.6 kg)
TeachLogic Forum 232 2-Channel Infrared Receiver/Amplifier Base Station with Switching Power Supply Review