Infinity Alpha 403F 2-way 320W Peak (40W RMS) Coaxil Speakers

Car speakers with excellent sound performance at an affordable price

The Infinity Alpha 403F is the ideal car speaker and coaxial speaker for anyone looking to take their in-car sound to the next level without breaking the bank. With a smart design, reliable performance, and signature Infinity sound quality, this 4-inch car speaker brings crystal-clear sound to any vehicle—whether you drive a compact car, sedan, or van. Thanks to the powerful Plus One™ woofer, balanced PEI dome tweeter, and wide frequency response, you'll experience music exactly as it was meant to be heard: powerful, clear, and consistently balanced.

Deep bass and clear midrange

The Infinity Alpha 403F features the proven Plus One™ woofer cone , which is larger than standard woofer surfaces in the same size class. This allows it to move more air and produce deeper bass and warmer midrange. So your favorite music sounds fuller, even at lower volumes.

Clear highs, anytime, anywhere

The built-in PEI balanced dome tweeter delivers a sparkling high range. From subtle details in acoustic tracks to sparkling hi-hats in electronic music, everything comes through crystal clear, without distortion.

Designed for any car and easy to install

Thanks to their universal design and the new Infinity ID design, these car speakers will fit in virtually any car. Whether you're a beginner or an experienced mechanic, the included mounting kit makes installing the speakers quick and hassle-free.

Built for years of listening pleasure.

Every Infinity Alpha 403F endures rigorous reliability testing and is meticulously tuned by top audio engineers. This ensures stable performance and durable use – ride after ride.

Product Features

• Plus One™ woofer cone architecture
•  Balanced dome tweeter made of PEI
•  Dome tweeter with edge-driven silk membrane
•  New Infinity ID design
•  Developed with a focus on value
•  Competitive voting

Technical data Infinity Alpha 403F

•  Speaker: 4 inch (100 mm) coaxial car speaker without grille
•  Power handling: 40 W (rms), 320 W (peak)
•  Sensitivity (at 2.83 V): 88 dB
•  Frequency response: 80Hz-20kHz
•  Nominal impedance: 4 ohms

Packaging contents

• 2 x speakers
• 8 x screws
• 8 x cable lugs
• 1 x mini user manual
• 2 x foam seal