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Infinity  |  Bar code: 1200130019913

Infinity, Alpha 403F, 10 cm 2-way coaxial speakers

Infinity ALPHA 403F – 4" (100 mm) 2-way Coaxial Car SpeakersInfinity ALPHA 403F are compact 4" (100 mm) 2-way coaxial car speakers from the Infinity Alpha series, designed to deliver clear, balanced, and detailed sound in small mounting locations.
€43.00 EUR

▪️ Do you have questions about this product?❓We can consult by phone +370 683 90000 or come to our salon Armatūrinininkų St. 1, Kaunas.

Free delivery in Lithuania from € 100

In Lithuania, Venipak courier delivery is available via 1-2 business days.
Delivery outside Lithuania within 4-10 business days.

Pick up the goods in the store for € 0

Armatūrinininkų St. 1, Kaunas
Working hours: Thursday 9:00-18:00

INFORMACIJA

Infinity ALPHA 403F – 4" (100 mm) 2-way Coaxial Car Speakers

Infinity ALPHA 403F are compact 4" (100 mm) 2-way coaxial car speakers from the Infinity Alpha series, designed to deliver clear, balanced, and detailed sound in small mounting locations. They are an ideal solution for upgrading OEM audio systems.

More information: official product page

Key Features

  • 4" (100 mm) 2-way coaxial speakers
  • Power: 40 W RMS / 320 W MAX
  • 4 Ω impedance
  • High sensitivity: 88 dB
  • Frequency response: 80 Hz – 20 kHz
  • Plus One™ woofer technology for enhanced bass efficiency
  • PEI balanced dome tweeter for clear highs
  • Compact design for easy installation
  • Optimized for OEM locations (doors, dashboards, rear deck)

Compact, yet Powerful Sound

ALPHA 403F is designed to provide full-range sound even in extremely small mounting spaces. The Plus One™ woofer design increases the cone surface area, improving bass reproduction and providing richer sound.

The PEI balanced tweeter ensures clear and crisp highs, allowing you to hear more musical details without distortion.

Effective OEM Audio System Upgrade

With 88 dB sensitivity, these speakers easily work with factory head units without an additional amplifier. This allows for a simple improvement of your car's sound without complex modifications.

The versatile 4" size allows them to be mounted in many OEM locations – in doors, dashboards, or the rear of the car.

Technical Specifications

  • Type: 2-way coaxial speakers
  • Size: 4" (100 mm)
  • Power (RMS): 40 W
  • Impedance: 4 Ω
  • Sensitivity: 88 dB
  • Frequency Response: 80 Hz – 20 kHz

Compatibility

Infinity ALPHA 403F are perfect for small OEM speaker replacements where easy installation and clearer, fuller sound are desired.

Why Choose Infinity ALPHA 403F?

  • Compact 4" size – versatile installation
  • Clear and balanced Infinity sound
  • Plus One™ woofer – better bass
  • PEI tweeter – clear highs
  • Simple OEM system upgrade

Infinity ALPHA 403F is an efficient and compact solution designed to improve the car's audio quality even in small mounting spaces.
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