Blew one tweeter - hertz ht25 (part of the hsk 165 component set). I've been using some Polk MM tweets while looking for a replacement(s). There are several I like, but their not in the budget currently so I did quite a bit of research on "bargain" tweeters. One that seemed to be consistently liked (and performed well when tested) is the ViVA (now HT25. There are several HT 25 models and there have been manufacturing/name changes since some of the VIVA xt 25 (now peerless) reviews. In any event, I decided to order the SC40, the flangeless model, in spite of some variations in the T/S parameters from the xt25sc90 (fully flanged smaller version of the xt25tg30) and the even larger bg60. I'm not the super expert on interpreting t/s parameters, but it seemed to me that the flangeless xt25 would require a higher x-over point, among other differences.
Put them in the a pillars of my 03 g35 coupe, powered with 65w channel, active - crossed at 3.2k @24, left tweet about 30 degrees of axis, rt - almost on axis and started listening. Adjusted the x-over point and slope up and down, steep, shallow, aimed them all over the place, tried small wave guides on them, etc. etc., but BOTTOM LINE: they pretty much sucked, at least IMO. The hertz ht25 tweeters - active - 3.2 to 5hz, slope - 12 to 24 (I didnt' like them on the passive's at all), in the a pillars, pointed almost directly across at each other, blew them away. The polk's (same basic set up as the Hertz') sound much better.
So... am I missing something?? Where to go from here?
I have a pair of lightly used hertz passive crossovers (2w.10) from the hsk 165 component set (and one ht25 tweeter plus some unused grills for the 6.5 mids) that I would be willing to trade for some decent tweeters.