TOA IR-820SP ลำโพงติดเพดาน 20 วัตต์ ลำโพงเพดาน Infrared Speaker

The Infrared Wireless Microphone System using this IR-820SP is a PA system designed for use in the school classrooms assuming that their size is about 10 m × 10 m (30 ft × 30 ft). The IR-820SP is a ceiling-mounted powered speaker with the infrared receiver and offers a wide frequency range of high-quality sound output. It features a digital amplifer for the amplification section, and a full-range speaker for the speaker section. Use of the supplied mounting hardware and optional HY-TB1 Tile Bar Bridge permits it to be versatilely mounted to match a wide range of applications and installation locations. This speaker is combined with an infrared wireless microphone and the IR-802T Infrared Wireless Tuner to make up the infrared wireless microphone system. The infrared microphone system eliminates problems with interference or eavesdropping, allowing simultaneous use in adjacent school classrooms.

Specification

• Power Source 24 V DC (supplied from IR-802T)
• Power Consumption 4.4 W (based on UL standards)
• Rated Output 20 W
• Frequency Response 100 Hz - 20 kHz (-10 dB) at installation in 1/2 free sound field
• (Measured by installing the unit in the center of a ceiling.)
• Amplification System Class D
• Distortion 5 % or less (rated output)
• Speaker Component 12 cm (4.72") cone-type
• Infrared Wireless Receiver
• Wavelength 870 nm
• Carrier Frequency Teacher (Channel A): 3.100 MHz
• Student (Channel B): 3.350 MHz
• Reception Angle 360゜ (Horizontal)
• Connection Terminal RJ-45
• LED Indicator Power (green) × 1
• Mounting Hole 300 mm (11.81")
• Usage Cable CAT-5 UTP
• Operating Temperature -10 ℃ to +50 ℃ (14 ゜F to 122 ゜F)
• Operating Humidity 90 %RH or less (no condensation)
• Finish Enclosure: Steel plate
• Baffle: Fire-resistant ABS resin (resin material grade: UL94V-0)
• Punched net: Steel plate
• Filter section: Polycarbonate
• Dimensions φ320 × 205 (D) mm (φ12.6 × 8.07)
• Weight 3.4 kg (7.5 lb)