Infinity Alpha 603

Infinity Alpha 603 are two-way coaxial car speakers that will upgrade your vehicle's sound system. With a 165mm diameter and a universal mounting solution, they fit most cars and lorries. The woofer uses the patented Plus One cone, which delivers a more powerful bass response. The system's total continuous power is 60W, and the frequency range covers 55Hz to 20kHz. The sound is completed by a tweeter with a PEI dome for clear high tones.

Patented cone for more powerful bass

The speakers use the patented Plus One cone architecture. This technology provides a larger effective surface area compared to standard speakers of the same diameter. The result is higher sensitivity and a significantly stronger output in the bass and mid-range. The woofer cone itself is made of polypropylene, which contributes to accurate sound reproduction.

Balanced sound performance

The soundstage is completed by a tweeter with a balanced dome made of PEI (polyetherimide). PEI reproduces crisp high frequencies without distortion, even at high volume levels. The entire system is carefully tuned to deliver the consistent sound signature characteristic of the Infinity brand. The combination of the polypropylene woofer and PEI tweeter covers a frequency response from 55Hz to 20kHz.

Universal installation and proven durability

Infinity Alpha 603 speakers are designed for easy installation in a wide range of vehicles, from saloons to lorries. The package includes all the necessary mounting hardware, including screws, flat connectors, and foam gaskets. In addition, the speakers have passed demanding reliability and durability tests against environmental factors such as temperature changes and vibrations. Their nominal 4-ohm impedance ensures compatibility with most standard car stereos and amplifiers.