4) New Rockford Fosgate PP4-T 1.5" 400 Watt Heavy Duty Car Power Bullet Tweeters New Rockford Fosgate PP4 T 1.5" 400W 4 Ohm Heavy Duty Car Audio Power Bullet Tweeter (4 pack) 50 Watts RMS (200W per 4 pack) 100 Watts MAX (400W per 4 pack) Impedance: 4 Ohm Billet stock machined aluminum phase plug