These speakers stem from a MCI500h Streamium Hifi system. They include the special plugs.

They are 50 Watts peak each. two-way speaker system (woofer / tweeter).

 having an nominal impedance of 9 Ohms makes them suitable for older amplifiers also.

Box dimensions : 30 (h) x 18 (w) x 27 (d) centimeters each