Hertz CK 165 F
Cento Series 6-1/2" flat-profile component speaker system
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Hertz C 165 F | Cento Series 6.5" Flat Profile Woofer
The Hertz C 165 F is a specialized 165 mm (6.5") shallow-mount woofer designed to solve the most common challenge in modern car audio: limited mounting depth. Part of the Cento series, the C 165 F features a super-slim basket that allows for high-fidelity sound in problematic OEM locations where standard speakers simply won't fit. Despite its compact profile, it delivers the signature "Hertz Sound Experience" with a punchy mid-bass response and impressive efficiency.
Product Highlights
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Super Slim Profile: With a mounting depth of only 43.5 mm (1.71 in.), this woofer is specifically engineered for new-generation vehicles with extremely shallow door cavities, eliminating the need for bulky spacers or custom door modifications.
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SPP-M (Semi-Pressed Paper-Mica) Cone: The C 165 F utilizes a specialized cone material that blends paper with Mica powder. This results in a diaphragm that is both lightweight and rigid, providing the perfect balance between high efficiency and a natural, uncolored sound.
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High-Density Ferrite Magnet: Even with its reduced size, the motor assembly features a high-flux ferrite magnet. This ensures the 25 mm (1") voice coil maintains excellent control and thermal stability, even during demanding musical passages.
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Optimized Excursion: The Hertz R&D team redesigned the dustcap and cone geometry specifically for this flat profile. This optimization allows the mobile group to maintain significant linear excursion, ensuring punchy mid-bass that defies the speaker's slim dimensions.
Key Features
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Enhanced Dispersion: The geometry of the C 165 F is tuned to provide a wide off-axis response. This is critical in car environments where the woofer is often placed low in the door, ensuring the midrange frequencies reach the listener’s ears clearly.
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Durable Construction: The low-profile basket is finished with a resistant coating to protect against humidity and temperature fluctuations found inside vehicle doors, ensuring long-term reliability.
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Easy Integration: Designed as a dedicated woofer, it integrates seamlessly into active systems or can be paired with Cento series tweeters (like the C 26) to create a high-end custom component set.
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High Sensitivity: A 93 dB SPL rating makes these woofers incredibly easy to drive, allowing them to provide a significant volume increase and improved clarity even when used with standard factory head units.
Technical Specifications
| Feature | Specification |
| Speaker Size | 165 mm (6.5 in.) |
| Component Type | Flat Profile Woofer |
| Power Handling (Continuous) | 70 Watts RMS (140W per pair) |
| Power Handling (Peak) | 180 Watts (360W per pair) |
| Impedance | 4-Ohm |
| Frequency Response | 65 Hz – 4,500 Hz |
| Sensitivity | 93 dB SPL |
| Woofer Mounting Depth | 1.71 in (43.5 mm) |
What’s In The Box?
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(2) Hertz Cento C 165 F Flat Profile Woofers
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(8) Mounting screws
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(8) Speed clips
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Owner's manual
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.