Here are the specs dated June 1983. Are replacement woofers available for either series?
Also noticed the power handling wemt from 65 to 100 watts, and the freq response went from 55 hz down to 35 hz.
I also see a passive radiator that wasn't on the original.
I didn't knpw that the original KG2 was changed about a year after the initial introduction. The tweeter crossover freq. was lowered from 3000 hz to 1800 hz, and the impedance dropped, sensitivity went up slightly. See series two specs below.