Infinity Alpha 603C 2-way speakers 165mm 90 720W 90dB 60Hz–20kHz 4ohm

Infinity Alpha 603C — Powerful 2-way speakers

Car enthusiasts looking for clear and dynamic sound will appreciate the Infinity Alpha 603C 2-way speakers. Thanks to the patented Plus One polypropylene diaphragm, they provide a larger effective area, resulting in higher sensitivity 90 dB and more pronounced bass performance. The silk dome and direct edge drive tweeter ensures natural reproduction of high frequencies without unpleasant sharpness. With a power of 90 W RMS (max. 720 W) and a frequency range of 60 Hz - 20 kHz, these speakers cover a wide sound spectrum, which is ideal for your favorite music genre.

Advanced Sound Technology and Sensitivity

The patented Plus One polypropylene cone increases the effective area of ​​the woofer, delivering stronger and deeper bass compared to conventional 6.5" speakers. This, combined with a sensitivity of 90 dB at 2.83 V, allows you to achieve high volume even when using less powerful amplifiers or car stereos. The silk dome tweeter eliminates harsh tones and ensures a smooth transition between mid and high frequencies.

Universal compatibility and durability

With a nominal impedance of 4 Ω, the speakers are compatible with most standard car stereos and external amplifiers. The polypropylene cone construction ensures resistance to moisture and temperature fluctuations, which is key for use in the harsh conditions of the automotive environment.

Technical specifications

• Type: 2-way car speaker with grille
• Diameter: 6-1/2" (165 mm)
• Power handling: 90 W RMS (720 W max.)
• Sensitivity: 90 dB (at 2.83 V)
• Frequency range: 60 Hz - 20 kHz
• Impedance: 4 Ω
• Tweeter: 0.75", direct edge-driven silk dome
• Woofer cone: Polypropylene, Plus One architecture

Package contents

• 2 speakers
• 2 grilles
• 2 0.75" tweeters
• 2 threaded adapters for flush mounting
• 2 plastic lock nuts
• 2 frequency crossovers
• 8 screws
• 8 flat connectors
• 2 foam gaskets
• Quick start guide