you can enjoy great upper range sound from the Power Acoustik NB-1. The earth ferroelectric transducer magnet and polypropylene diaphragm of this Power Acoustik 2-way speaker help to deliver clear sound. You can angle mount or surface mount this Power Acoustik car speaker. High SPL of 97 dB in this Power Acoustik 2-way speaker gives higher volume and more intense sound. This Power Acoustik car speaker has a built-in crossover which eliminates the need for a separate crossover. The Power Acoustik NB-1 has a high RMS of 100 watts, so it can handle a high amount of power for an extended period of time.