The **Rockford Fosgate PP4 T** is a 4 Ohm tweeter with a 1.5 horn engineered specifically for high SPL (Sound Pressure Level) conditions. It features 50 watt RMS power handing and 100 watt of MAX power has a replaceable diaphragm billet stock machined aluminum phase plug replaceable diaphragm 105dB sensitivity Frequency response of 4kHz 20kHz and includes mounting hardware. The bullet tweeter also comes with 1 year manufacturer warranty for your piece of mind! Billet stock machined aluminum phase plug Replaceable diaphragm 1.5 horn design