Genius Audio midrange speakers transducers have been specifically developed to offer the best performance as a mid range frequency driver, taking advantage of their good size in the ferrite magnet provides a higher magnetic flux density, and at the same time generating a force of greater action in the moving coil, the GPRO-M138 is the ideal speaker for car audio in open or internal environments, providing conditions of greater linearity and high SPL (sound pressure level), this loudspeaker will give you a high sensitivity in medium frequencies, controlling at the same time, power, efficiency and high fidelity. With passion and purpose, we seek to deliver the perfect product for your lifestyle and to inspire your love for music and life, every day. Your Emotions, Our Technology making it the perfect addition to a pro audio style speaker system designed for crisp, loud audio 8 Inch Car Door Speakers Pro Audio Midrange 250 Watts RMS - 500 Watts MAX Push Connectors Frequency Response: 112Hz - 8KHz 4 Ohms 97.6dB Aluminum Basket Dust Cap Cover Ferrite Y30 3" CCAW Voice Coil.