


"Fit perfectly and worked exactly as expected — support was excellent."
Hertz C 26 OE
Upgrade Your Vehicle With Confidence. This Is Built to Fit, Perform, and Last
Hertz C 26 OE | Cento Series 1" Component Tweeters
The Hertz C 26 OE (MFR #: C 26 OE) is a specialized high-performance tweeter set from the Cento series, specifically engineered for OEM (Original Equipment Manufacturer) integration. Unlike standard aftermarket tweeters that require custom modification, the C 26 OE features a optimized geometry designed to maximize acoustic performance when tucked away in factory locations. With its Tetolon® fiber dome and advanced motor structure, it delivers a natural, detailed sound that transforms standard factory audio systems into a high-fidelity experience.
Product Highlights
Tetolon® Fiber Dome: These 26 mm (1 in.) tweeters utilize a soft Tetolon® fiber diaphragm paired with a 20 mm (0.8 in.) voice coil. This combination provides an exceptionally natural timbre and a smooth, progressive roll-off, ensuring that musical nuances are reproduced with accuracy and without the harshness often found in metallic domes.
FEM Optimized Geometry: The faceplate and internal structure are refined using Finite Element Method (FEM) modeling. This advanced engineering technique optimizes the tweeter's dispersion characteristics for OEM placement, ensuring a linear frequency response even when the speakers are mounted off-axis or behind factory grilles.
High-Energy Neodymium Magnet: A high-density neodymium magnet provides the magnetic flux required for precise control and rapid response. This results in superior handling of high-energy dynamic transients, keeping the audio crisp and clear even during complex musical passages.
Seamless OEM Integration: Everything about the C 26 OE is built for a "stealth" upgrade. The included in-line crossovers are integrated directly into the cables to save space, making them a true plug-and-play solution for dashboards, pillars, or door sails where space is at a premium.
Key Features
6 dB/Octave High-Pass Filters: The system includes ultra-compact, dedicated in-line crossover networks. These filters protect the tweeters by blocking low frequencies while maintaining a compact profile that fits easily inside factory wiring channels.
High Sensitivity Design: With a sensitivity rating of 92 dB, these tweeters are highly efficient. They can provide a significant boost in volume and clarity even when powered by a low-output factory head unit.
Extended Frequency Range: While many factory tweeters struggle above 15 kHz, the C 26 OE extends smoothly up to 22.5 kHz, adding a sense of air and detail to your favorite tracks.
Broad Installation Accessories: Hertz includes a wide range of mounting accessories in the box, ensuring compatibility with the diverse mounting brackets found in modern vehicle interiors.
Technical Specifications
| Feature | Specification |
| Model Number | C 26 OE |
| Speaker Size | 26 mm (1 in.) |
| Power Handling (Peak) | 120 Watts (Hi-Pass @ 2.5kHz - 12dB/Oct) |
| Power Handling (RMS) | 60 Watts |
| Impedance | 4-Ohms |
| Frequency Response | 1,800 Hz – 22,500 Hz |
| Sensitivity | 92 dB SPL |
| Mounting Depth | 0.17 in (4.36 mm) |
What’s In The Box?
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(2) Hertz C 26 OE Tetolon Dome Tweeters
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(2) CCX 26 In-line 6 dB/Oct Crossovers
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(2) Mounting adapter brackets
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(2) Adhesive mounting pads
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Owner's Manual and Technical Data Sheet
- Ships within 1–3 business days from our warehouse
- Tracking included with every order
- Free 30-day returns if it doesn’t work for your setup
- 2-year manufacturer warranty
- Authorized dealer guarantee
- Real installer-backed support before and after purchase

Why This Upgrade Makes Daily Driving Better
Ease of Use & Safety
Expandable by Design
FITMENT & INSTALLATION MADE SIMPLE
WHAT VEHICLES IT WORKS WITH
We verify compatibility before you buy, no guesswork.
DIY FRIENDLY IF:
- You're comfortable with basic tools
- You follow provided instructions
PROFESSIONAL INSTALL RECOMMENDED IF:
- Your vehicle requires dash kits or wiring adapters
- You want a turnkey experience
INSTALLATION CREDIT & SUPPORT:
- $75 Installation Credit when purchased online
- Speak to real installers before you buy
- Bring it into one of our locations for install
Why Buying This Here Is Safer Than Anywhere Else
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Verified Vehicle Fit
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Installer Support
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Authorized Products
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Easy Returns
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Physical stores & real installers
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FREQUENTLY ASKED QUESTIONS
FREQUENTLY ASKED QUESTIONS
How do I know this stereo or speaker will fit my car?
Select your year, make, and model using the Vehicle Fit Guide at the top of the page. You’ll only see products that are compatible with your exact vehicle setup.
What happens if I order something that doesn’t fit?
You can return or exchange it within 30 days. We’ll help you identify the correct part for your vehicle so you don’t have to guess again.
Are these products brand new and covered by warranty?
Yes — all products are brand new, authentic, and sold as an authorized dealer, which means they include a full manufacturer warranty.
Can you install this for me, or do I need to do it myself?
You can do either. Install it yourself, or use your $75 installation credit at our shop and have it professionally installed by our team.
What if I don’t know what to choose for my car?
Tell us your vehicle and what you want to improve (sound, bass, CarPlay, etc.). We’ll recommend the exact products that fit your car and your budget.
