I had bought a pair of these about 6 months ago, pretty cheaply, but the Polycell tweeters didn't work. So, I decided to try the North Creek Music tweeters in them. Silk dome tweeters that they advertised as having 95% of the sound of the venerable Scanspeak 9500. Well I wasn't disappointed with these tweeters, I loved them from the start. One thing seemed missing though and that was the stock crossover wasn't really refined for that tweeter. So, today I took it apart and changed the capacitors and made them 2nd order Butterworth. There was also a 1ohm resistor used to attenuate the older polycell, so the new tweeter also sounded a little laid back. I removed it and now the tweeter seems more balanced with the woofer. All-in-all for what I have in these, probably around $50.00 they are very nice mini-monitors. I also changed the stock crossover point from 3500hz now at 2500hz, the North Creek Music tweeter advertises useable range down below 2000hz, but didn't want to get into that nether region.