The THUNDER51 is a 5.25" component speaker pair with mid range, tweeter and crossover that can handle up to 90W RMS power. The rich, full sound of these gorgeous speakers is amazing. You will be impressed.
The THUNDER52 is a 5.25" 2-way coaxial speaker pair that can handle up to 45-watts RMS power. THUNDER speakers are set apart from the "other guys" because of its ability to reproduce low frequencies that other speakers cannot reproduce.
The THUNDER52 plays all the way down to 55Hz so even in systems that don't have subwoofers, you can get excellent bass response for all kinds of music.