Uni-Pex, Marine Speaker 10W with transformer (MA-15T)

Model: MA-15T

Rated input: 10W
Impedance: 1K / 2kohm (100V line)
Sound pressure level: 100dB (1W/1m)
Frequency response: 500Hz ~ 5kHz
Dimensions: dia. 145 x 135 mm

Mass: Approx. 1.6kg 

Specifications:-

http://www.unipex.co.jp/seihin/download/pdfdata_en/MA15T.pdf