Sound-proof loudspeaker with built-in 100 V transformer with power regulation
15 W / 10 W / 7.5 W / 5 W. Made of ABS materials.
It is intended for use on municipal radio, sound system of production halls, sports facilities etc.
Included metal holder. 
                    
                    
                        Sensitivity: 107dB / 1W / 1m
     Freq. characteristic: 300-7000Hz,
     Dimensions: 200x130x270mm,
     Weight: 2kg.