PylePro PDBT21F 1.75 in. Heavy Duty Aluminum Die-Cast Titanium Super Tweeter Type: Tweeter Woofer Material: 1.75 Titanium Tweeter Tweeter: PDBT21F Magnet Construction: 1 YEAR Frame Construction: 1 YEAR RMS Power: 300 W Sensitivity: 106 dB Frequency Response: 2 kHz