More about the product
The Hertz SP4.500 is a compact four-channel amplifier designed for high-performance car audio systems. It belongs to the SPL Show range, which focuses on delivering strong output and clean sound for enthusiasts who want reliable power in a small footprint. This model combines advanced technology with practical features to suit modern installations.
The SP4.500 uses an Advanced D-Class Output Stage for maximum efficiency and stable performance. This design reduces heat and power loss, allowing the amplifier to deliver consistent output even during extended use. The compact chassis makes it easy to install in vehicles with limited space while maintaining excellent reliability.
Each of the four channels is engineered to provide clear and dynamic sound for midrange and high-frequency speakers. The amplifier includes flexible tuning options such as adjustable high-pass and low-pass filters, enabling precise control over crossover points. This allows installers to tailor the sound to match the system configuration and achieve a balanced audio experience.
The SP4.500 features a robust power supply and advanced protection circuits for thermal, overload, and short-circuit safety. These safeguards ensure long-term durability and protect connected components. Despite its small size, the amplifier offers strong performance suitable for driving multiple speakers in a high-output setup.
Connectivity is straightforward, with high-level and low-level inputs for easy integration with factory or aftermarket head units. This makes the SP4.500 ideal for upgrading existing systems without replacing the source unit. A compact design and efficient cooling system further simplify installation in tight spaces.
While the SP4.500 excels at powering midrange and tweeters, it is not intended for subwoofer applications. For deep bass, pairing it with a dedicated mono amplifier is recommended. Its strength lies in delivering clean, controlled sound for the upper frequency range in multi-speaker systems.
The Hertz SP4.500 is a practical choice for enthusiasts who want reliable power, advanced efficiency, and flexible tuning in a compact package. It combines performance and convenience for modern car audio upgrades.
Technical details
- Brand
- Hertz
- Channels
- 4/3/2002
- Impedance
- @ 2 Ch: 4 Ω|@ 3 Ch: 2 Ω + 2 Ω + 4 Ω|@ 4 Ch: 2 Ω
- Output Power
- 2 Ch: 300 W x 2 (4Ω)|3 Ch: 145 W x 2 (2Ω) + 300 W x 1 (4Ω)|3 Ch: 80 W x 2 (4Ω) + 330 W x 1 (4Ω)|4 Ch: 150 W x 4 (2Ω)|4 Ch: 90 W x 4 (4Ω)
- Size
- 7.58 x 4.18 x 1.9 inches
- Total Power
- 600W
- Weight
- 2.15kg
Look out for Bankstown Sound Recommendations
The Hertz SP4.500 suits those building multi-speaker systems that require clean, controlled power for midrange and tweeters. It is ideal for enthusiasts upgrading factory systems or creating custom setups where space is limited. Compared to entry-level amplifiers, it offers better efficiency and tuning flexibility. However, it is not designed for subwoofers, so pairing with a dedicated mono amp is recommended for full-range performance. This model is perfect for compact installations that demand reliability and precision.
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.