Thank you for the review Amirm !
I own a pair of Jbl 530, and in passive mode they are good loudspeakers, but not excellent. The main problem is the crossover frequency that is set to low i frequency , thus showing the tweeters resonance without enough suppression made in the crossover.
I have modified my Jbl 530 to be driven fully active with a Dbx dsp crossover.
The optimal crossover frequency after two years of modifying and carefully listening is 1,8 kHz with, at least, 24 dB /oct linkwitz Riley crossover, acoustically.
With those modifications plus a couple of other small ones ( lowering 1,5 dB at 125 Hz with q=3, boosting the tweeter beyond 12 kHz and some more eq for the waveguide ) , this standmount speaker is one of the best sounding speaker regardless of price, considering the size of the loudspeaker.