bullet tweeters

I was looking for cheap tweeters and saw these: Power Acoustik NX-5 Pro Audio Bullet Tweeter - Sonic Electronix WoofersEtc.com - 15-MJPT - Memphis 1" 200W Max Aluminum Frame Bullet Tweeter Power Acoustik: $48 Ohms: 3 frequency response: 3,000-20,000 Memphis: $130 Ohms: 4 frequency...