Loud and clear definitely noticed the difference running them off the rp150x4 seems to like them so far at this time!!
These Tweeters are the best I've ever had I've done Alpine, boss but these Skar are the best for me
Easy install, The sound quality on these are top tier. I've had other known brand tweeters but these are better in my opinion
Had these in my kicks for about six months now and HOLY BALLS are they loud. Running off an RP150.4 with PAX6.5s and they blow away the four SPX tweeters in my doors. Of course they're not nice smooth silk dome tweeters, but they easily keep up with two 18s in the back seat and take loads of power. Five stars for being great at what they do.