The DSP903 is a ceiling speaker with fire dome and a 70v/100v transformer built in. The 70v/100v transmission is realized in a high-voltage, low-current mode, which makes longer distance transmission and parallel connection of multiple loudspeakers possible.
The built-in 4.5” speaker driver is designed of wide frequency response (250-16,000Hz), the multiple terminals 1.5W, 3W & 6W can be applied to different occasions vary in area sizes and background noises; It is made of high-class steel and fixed by stamping, which ensures long-term durability, and will never be out of shape; Equipped with leaded wire case which is hard to burn for fireproofing; Spring clip clamp makes the easy and secure installation possible; Driver surround excellent damping, long life, clear and sonorous sounds.
This fireproof ceiling speaker is an ideal choice for industrial and commercial applications in hotel, school, office and factory where background music and paging is needed.

DSP922S 4.5 Inch Fireproof Ceiling Speaker with TransformerNovember 14, 2016The DSP922S is a ceiling speaker with a 70v/100v transformer built in, and also is a ceiling speaker with fire dome. The 70v/100v transmission is realized in a high-voltage, low-current mode, which makes longer distance transmission and parallel connectiview
DSP922 4.5 Inch Fireproof Ceiling Speaker with TransformerNovember 15, 2016The DSP922G is a ceiling speaker with a 70v/100v transformer built in, and also is a ceiling speaker with fire dome. The 70v/100v transmission is realized in a high-voltage, low-current mode, which makes longer distance transmission and parallel connectiviewwe will contact you within 24 hours.
2018 International Distributor Meeting successfully held in DSPPA Audio MuseumMay 14, 2018The 2018 International Distributor Meeting of Guangzhou DSPPA Audio Co., Ltd was successfully held in DSPPA Audio Museum on May 9th. More than 60 distributors from all over the world joined the meetin...view
Speaker System in Conference Room, Key Point ThreeMarch 29, 2019The third key point: microphone digital audio processorA good microphone digital audio processor (commonly known as automatic mixer) can greatly improve the sound quality and transmission gain of the ...view