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INFINITY ALPHA 403F - New Gen Alpha Series 4″ 2-Way Coaxial Speakers
INFINITY ALPHA 403F - New Gen Alpha Series 4″ 2-Way Coaxial Speakers
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Infinity Alpha 403F | 4″ Coaxial Car Speaker System | 40 W RMS | 88 dB SPL
The Infinity Alpha 403F is a compact yet powerful 4″ coaxial car speaker system, expertly engineered for clean mids and sparkling highs in space-constrained applications. Its advanced Plus One™ woofer cone architecture and PEI balanced dome tweeter deliver rich, full-spectrum sound with minimal distortion—perfect for upgrading stock systems in smaller doors, dashboards, or rear factory locations.
With 40 W RMS (320 W peak) power handling, a 4 Ω nominal impedance, and 88 dB sensitivity (@2.83V), the Alpha 403F is optimized for strong output from both stock and aftermarket head units. Designed to bring Infinity’s signature sound to tighter installation environments, this speaker delivers surprisingly full-bodied audio in a highly space-efficient format.
Product Highlights:
4″ (100 mm) coaxial car speaker system optimized for compact locations
Plus One™ polypropylene woofer cone for increased cone area and better bass
PEI balanced dome tweeter for crisp, detailed treble with low distortion
High-efficiency 88 dB sensitivity ideal for use with factory or low-power systems
Smooth frequency response from 80 Hz to 20 kHz for a natural listening experience
Easy-fit design for factory replacements or custom compact installs
Tech Specs:
Model: Alpha 403F
Type: 2-Way Coaxial Car Speaker System
Woofer: 100 mm (4″) Plus One™ polypropylene cone
Tweeter: PEI balanced dome tweeter
Power: 40 W RMS / 320 W peak
Sensitivity: 88 dB (@2.83V)
Impedance: 4 Ω
Frequency Response: 80 Hz – 20 kHz
Applications: Dash, door, or rear fill in compact vehicles; OEM upgrade or retrofit where space is limited
Infinity Quality in a Compact Form
Like the rest of the Alpha series, the 403F features Infinity’s acclaimed sound engineering and tuning, with performance that punches above its size. Whether you’re enhancing your vehicle’s factory system or building a discreet custom install, the Alpha 403F ensures clean, balanced audio—Infinity sound, scaled down, but never compromised.
Shipping
Shipping
Hi there, you can choose delivery or self-pick up at our store in Ara Damansara. Contact +6019-269 6609 to pick up or more professional car audio advice!
Free Shipping within West Malaysia. We will bubble wrap to protect your goods before shipping.
We will ship out the product within the same working day. If fall on the weekends, we will ship out on Monday.
Need Professional Car Audio Advice? (FREE)
Need Professional Car Audio Advice? (FREE)
+6019-269 6609
Call or Whatsapp us for professional car audio advice, we don't bite :D
If you want to listen to the live demo of this product, kindly contact us.
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