Hertz CX 100 – 4″ 2-Way Coaxial Car Speakers | 120W Peak Power

The Hertz CX 100 from the Cento Series is a premium 4-inch (4″) 2-way coaxial car speaker designed to deliver detailed highs, natural vocals, and dynamic midrange performance. Engineered for OEM replacement and aftermarket upgrades, the CX 100 provides impressive sound quality while fitting into compact factory speaker locations.

Equipped with a 24 mm (0.9″) Tetolon® soft dome tweeter, the CX 100 produces smooth, detailed high frequencies with excellent off-axis performance. The SPP-M (Semi-Pressed Paper + Mica) woofer cone combines lightweight construction with outstanding damping characteristics, ensuring accurate and balanced sound reproduction.

Key Features

• Premium 4″ (100 mm) 2-way coaxial car speakers
• 120 W Peak Power / 40 W RMS
• 24 mm (0.9″) Tetolon® soft dome tweeter with ferrofluid cooling
• RHFC™ adjustable tweeter for improved off-axis listening
• SPP-M (Semi-Pressed Paper + Mica) woofer cone for natural and balanced sound
• 1″ (25 mm) aluminum voice coil for increased power handling
• High-density ferrite woofer magnet
• Neodymium tweeter magnet
• Optimized basket design to reduce unwanted vibrations
• Excellent upgrade for factory car audio systems

Designed for Outstanding Sound Quality

The Hertz CX 100 has been developed to overcome the acoustic limitations of factory speaker locations. Using advanced engineering and FEM simulations, Hertz optimized the tweeter geometry for exceptional off-axis performance, ensuring a balanced soundstage regardless of installation position.

The RHFC™ (Rotary High Frequency Contour) tweeter can be angled toward the listener, providing more accurate high-frequency response and a wider listening experience.

Natural and Detailed Audio Reproduction

The lightweight SPP-M woofer cone reinforced with mica delivers clean midrange frequencies, punchy mid-bass, and controlled damping. Combined with the smooth Tetolon® tweeter, the CX 100 produces rich vocals, crisp instrument detail, and enjoyable everyday listening.

Built for Long-Term Reliability

A rigid three-spoke basket, high-density ferrite magnet, aluminum voice coil former, and premium materials ensure excellent durability while minimizing unwanted resonance and distortion, even at higher listening volumes.

Technical Specifications

Why Choose the Hertz CX 100?

The Hertz CX 100 is an excellent choice for anyone looking to upgrade factory speakers with a compact yet powerful 4-inch coaxial speaker. Offering natural sound, detailed highs, durable construction, and Hertz’s renowned engineering, it delivers a noticeable improvement in overall audio performance while maintaining easy installation.