More about the product
The Hertz DCX100.3 Dieci 4-Inch Coaxial Speakers are designed to deliver clear and balanced sound in compact spaces. Built for car audio enthusiasts who want reliable performance without complex installation, these speakers combine quality materials with practical design. The DCX100.3 features a 4-inch woofer paired with a coaxial tweeter, ensuring full-range sound reproduction from a single unit. This makes it ideal for upgrading factory speakers in vehicles with limited mounting depth.
The woofer cone is made from high-quality materials that provide rigidity and responsiveness, helping to produce accurate midrange and bass tones. The integrated tweeter handles high frequencies with precision, creating a smooth and natural sound profile. Hertz has engineered the crossover network internally, so there is no need for external components, simplifying installation and reducing clutter.
The DCX100.3 uses a compact design that fits easily into most standard 4-inch speaker locations. Its shallow mounting depth makes it suitable for doors, dashboards, or other tight spaces where larger speakers cannot fit. The frame and magnet structure are optimised for durability and stability, ensuring consistent performance over time.
While these speakers offer excellent clarity and tonal balance, they are best paired with a quality head unit or amplifier for optimal results. They are not intended for extreme bass output, so users seeking heavy low-end performance may prefer adding a subwoofer to their system. However, for everyday listening and a noticeable improvement over factory speakers, the DCX100.3 delivers impressive results.
The Dieci series is known for combining affordability with quality, and the DCX100.3 continues that tradition. It provides a straightforward upgrade path for those who want better sound without major modifications. With Hertz’s reputation for precision engineering, these speakers offer reliability and performance in a compact package.
Technical details
- Brand
- Hertz
- Cone
- Water repellent pressed paper
- Continuous Power Handling
- 30WRMS
- Dome
- PEI
- Frequency Response
- 70Hz ÷ 21kHz
- Impedance
- 4Ω
- Mounting Depth
- 43mm
- Peak Power
- 60W
- Size
- 4 inches
- Tweeter Magnet
- Neodymium
- Woofer Magnet
- High density flux ferrite
Look out for Bankstown Sound Recommendations
The Hertz DCX100.3 is recommended for drivers who want a simple, high-quality upgrade from factory speakers without major modifications. It suits vehicles with limited space and works well for everyday music listening. While it delivers clear mids and highs, it is not designed for heavy bass, so those seeking deep low-end should consider adding a subwoofer. Compared to cheaper alternatives, the DCX100.3 offers better clarity and build quality, while remaining more affordable than premium component systems.
Why Choose Bankstown Sound for Your Car Audio & Tech Upgrades
At our Bankstown Sound store and workshop in Sydney, our team ensures every car and auto audio installation and upgrade starts with an understanding of how you use your car. Our team works with you to understand your driving habits, the features you rely on, and the problems you’re trying to solve.
Most factory setups are built to broad standards and often lack the clarity or seamless connectivity required for how people actually drive. That’s why we focus on modernising your dashboard and audio performance based on how you use your vehicle.



