Please find reviews below:
http://www.audiosolutions.lt/products/overture/o203f
http://www.6moons.com/audioreviews2/audiosolutions2/1.html
https://www.goodsound.com/index.php/equipment-reviews/737-audiosolutions-overture-o203f-loudspeakers
Specifications
Dimensions (HxWxD) : 1038mm x 232mm x 377mm; 41 x 9.1 x 14.8 in
Weight : 25 kg/55 lbs each
Shipping weight : 28 kg/62 lbs each
Sensitivity : 91 dB @ 2.83V 1m
Nominal power handling : 90 W rms
Maximum unclipped power handling : 180 W;
Impedance : nominal 4,0 ohms; minimal 3.25 ohms @ 200Hz;
Crossover frequency : 1900 Hz
Frequency response (in-room environment) : 36-26000 Hz
Drivers : 2,5cm silk dome tweeter, two 15cm classic paper cone mid-bass drivers
Two-way speaker system.Highly braced, CNC precision and as thick as 36mm MDF cabinet ensure acoustically silent and rigid structure. High-flow bass reflex port with highly rounded flange eliminates air flow noise. Impedance-linear crossover with pin-to-pin construction. High-grade components and bi-wiring/bi-amping binding posts. Light weight paper cone mid-bass driver and light weight customized soft dome tweeter loaded with mini horn to boost its performance and achieve greater sensitivity in critical range.