Hertz CX 100
Cento Series 4" 2-way car speakers
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Hertz CX 100 | Cento Series 4" 2-Way Coaxial Speakers
The Hertz CX 100 is a masterpiece of compact engineering, designed to bring high-fidelity audio to even the smallest factory mounting locations. While 4-inch speakers often struggle with harshness or lack of detail, the Cento series solves this using a Tetolon® dome tweeter and a specialized Mica-reinforced cone. These materials allow the CX 100 to produce a "big" sound with refined musicality that belies its small footprint.
Product Highlights
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Tetolon® Fiber Soft Dome: The 24 mm (0.9 in.) tweeter uses a soft fiber material to deliver a smooth, natural high-frequency response—avoiding the metallic "ringing" typical of budget speakers.
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Mica-Reinforced Woofer (SPP-M): The Semi Pressed Paper-Mica cone provides the perfect balance of lightweight agility and rigid damping for clear, punchy midrange.
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Optimized for Real-World Cabinets: Engineered specifically for the "unfavorable" placements found in many cars (like dashboards), ensuring a balanced soundstage even when off-axis.
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High Efficiency: With a 92 dB sensitivity, these 4-inch drivers can get plenty loud while running off a standard factory radio or a small aftermarket amp.
Key Features
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Rotatable Logo: The Hertz logo on the tweeter can be rotated to match the orientation of your installation for a professional look.
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Neodymium Tweeter Magnet: Provides high magnetic flux in a tiny package, allowing the tweeter to remain compact while delivering superior detail.
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Large 1" Woofer Voice Coil: A 25 mm voice coil provides better thermal management and power handling than standard 4-inch drivers.
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High-Density Flux Ferrite Magnet: Ensures the motor has the "muscle" required to move the cone accurately for linear, distortion-free sound.
Technical Specifications
| Feature | Specification |
| Speaker Size | 100 mm (4 in.) |
| Design | 2-Way Coaxial |
| Power Handling (Continuous) | 40 Watts RMS |
| Power Handling (Peak) | 120 Watts |
| Impedance | 4-Ohms |
| Frequency Response | 80 Hz – 22,000 Hz |
| Sensitivity | 92 dB SPL |
| Mounting Depth | 1.71 in (43.5 mm) |
What’s In The Box?
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(2) Hertz CX 100 4" Coaxial Speakers
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(2) Integrated 24 mm Tetolon® Tweeters
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(8) Mounting screws and speed clips
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Owner’s manual
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Warranty documentation
What Others Are Saying
Eddie was great - SDCS installed a new head unit in my 2019 4Runner. He was honest in his opinions regarding the options I was considering. Pricing was also good - he was able to reuse some of my existing installation kit so I saved a bit of $$.Installation was clean and fast and he took the time to walk through the features before I left. Highly recommend!!
I had a great time at this shop! The staff really knows their stuff and took the time to explain the different options without pressure. Installation was quick, clean and professional. Everything looks factory and sounds amazing. The prices were fair and customer service was above and beyond. I highly recommend this place if you're looking for quality car audio and excellent service.
Those guys are really professional! I had a new Alpine floating head unit installed in my 2008 Mercedes, and it feels like a brand-new car. The installation was super clean. At first, the sound wasn’t the same as the factory stereo, but Kevin tuned it to be just as good—if not better—without adding any new amps. They even used my factory GPS antenna so I don’t have extra wires hanging out. On top of that, they matched the online price. Big thanks to Kevin and Eddie—highly recommended!
Kevin was awesome, he took his time and explained everything to me. I went in initially for a dash cam install and then decided to get a sub and amp installed as well. Both turned out great and will be returning if I need more work done.
Came In not knowing what to expect when suddenly my stereo stopped working. Spoke with Kevin in the front and after a VERY fast diagnosing they discovered my wiring was incorrect. After only about 45 minutes total being in the store I was on my way to the beach with a working stereo again! Thank you so much SDCARSTEREO
Highly recommend Kevin and the team at San Diego Car Stereo for any issues with aftermarket stereos. I bought a car with an aftermarket stereo and AC unit that wasn’t working properly—specifically, the heat wasn’t functioning due to an improper setup. I had several people look at it with no luck, and even the dealership basically refused to help because it was an aftermarket install. I came to Kevin and his team over the holidays feeling pretty defeated, but he was confident he could get the heat working before I headed back to a Colorado winter. Sure enough, he got it done.
FAQ
Do products purchased from San Diego Car Stereo come with a warranty?
Yes, all products come with a 1-year manufacturer warranty unless otherwise stated. This covers any defects excluding physical damage.
Are these products brand new?
Yes, every product we sell is 100% brand new, unused, and comes in original manufacturer packaging unless clearly marked otherwise.
Do you offer installation services?
Yes, we offer professional installation services at both of our San Diego Car Stereo locations. Our expert technicians have over 50 years of combined experience to install all of your car, marine, or offroad audio needs. Stop by or give us a call to schedule an appointment to get a quote in person.