2 kHz - 25 kHz FREQUENCY RESPONSE: Pyramid’s 1'' car tweeter speaker has enhanced Ferrofluid and 2 kHz - 25 kHz frequency response that will complete a sound system of a car or woofer enclosure 500 WATT POWER: This bullet horn super tweeter speaker provides up to 500 watts peak power because it is equipped with 30 oz magnet structure. It's all housed in heavy duty aluminum housings 4 OHM IMPEDANCE: This car tweeter has 4 ohm impedance rating that compensates the undersized wire found in many of today’s cars. It ultimately reduces distortion so you can enjoy a crisp and clear sound STANDARD SIZE: Pyramid follows the standard size for most car stereo systems and created this set with a 1” audio tweeter plus an aluminum frame. The heavy duty housing and structure provides a strong foundation SENSITIVITY: This titanium super tweeter is very easy to install with a capacitor crossover network and hardware. The sensitivity is 106dB and weighs 3. 4 lbs