The DSP405 is a weatherproof outdoor column speaker with 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 products have gotten waterproof certificate and other certificates, and the net cover is made of aluminum and would not rust. The speaker is constructed of dual-crossover. The speaker units have the features of high sensitivity and high dynamic range.
This column speaker can be applied to different occasions vary in area sizes and background noises, such as station, park, school, square, military camp, industrial park, beach, etc.

DSP403N Indoor Column SpeakerMarch 22, 2017DSP403N is an indoor column speaker built-in 70v/100v transformer. The 70v/100v transformertechnique reduces line losses on longer distance and allows easy parallel connection of multiple loudspeakers...view
DSP455 Outdoor Waterproof Column SpeakerMarch 16, 2017The DSP455 is a weatherproof outdoor column speaker with a 70v/100v transformer built-in.The 70v/100v transmission is realized in a high-voltage, low-current mode, which makes longer distance transmis...view
DSP158 Outdoor Waterproof Column SpeakerNovember 16, 2016Description:This series of speakers are weatherproof outdoor column speakers with a 70v/100v transformer built in. The 70v/100v transmission is realized in a high-voltage, low-current mode, which make...viewwe will contact you within 24 hours.
DSPPA | Shined Bright at JIMEX 2023: Review of Wonderful MomentsJune 14, 2023Abstract: At JIMEX 2023 from June 5-8, DSPPA was a standout presence and made a lasting impression on those who visit the booth.view
The Choice of the Home Audio SystemApril 25, 2019First, what is the audio?Many people may be confused by the concepts of sound and speaker. Generally speaking, sound is a system of speaker and power amplifier and sound source system. The speaker is ...view