Before my intervention, one of the drivers was dead and the tweeter was filtered by a nasty electrolytic capacitor and its level was far too high, resulting in very harsh sound.
I first replaced the main driver that I found at WES in Ashfield and I calculated a better crossover for the tweeter.
a simple resistor network and better capacitors. The result is quite satisfactory.
And here is the result...much better
They are now used by my son with a very old MOSFET amplifier and a Bluetooth receiver fed by his iTunes....
Born in France, well travelled, relocated to Sydney in 1997.