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Infrared Ceiling-Mount Powered Speaker 20W
ลำโพงติดเพดาน กำลังขับ 20W พร้อมตัวรับสัญญาณแบบอินฟราเรด สำหรับใช้งานร่วมกับเครื่องรับสัญญาณไมโครโฟนไร้สาย TOA รุ่น IR-802T เหมาะกับการใช้งานภายในห้องเรียน
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.
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 |
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 |
Reception Angle |
360゜ (Horizontal) |
Connection Terminal |
RJ-45 |
LED Indicator |
Power (green) × 1 |
Mounting Hole |
φ300 mm (φ11.81") |
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 |
Dimensions |
φ320 × 205 (D) mm (φ12.6 × 8.07) |
Weight |
3.4 kg (7.5 lb) |
Accessory |
Safety wire …1 |