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The ESB 3.6C is a 6.5 inch (165 mm) 2-way coaxial car speaker from ESB Audio's Tremila Series, rated at 80W RMS (160W transient) at 4 ohms with a frequency response of 65 Hz to 25 kHz. Sold as a pair.
Other ESB 6.5 inch coaxials: the 1000 Series 1.6C (90W RMS) and the 4000 Series 4.6C (100W RMS).
Key specifications
- Size: 6.5 inch / 165 mm coaxial
- Power handling: 80W RMS / 160W transient
- Impedance: 4 ohm
- Frequency response: 65 Hz to 25 kHz
- Sensitivity: 91.5 dB (2.83V/1m)
- Woofer: waterproofed pressed paper cone, 25 mm voice coil, high-grade ferrite magnet
- Tweeter magnet: N35 neodymium
- Basket: ABS reinforced with fibreglass
3.6C 6.5"/165 mm Coaxial
A well-engineered 6.5 inch coaxial built for clean, accurate sound using quality materials throughout.
The basket is ABS reinforced with fibreglass, maximising torsional rigidity while keeping airflow resistance to a minimum.
The woofer cone is pressed paper with a waterproof treatment — a material well regarded for its balance of lightness, stiffness and natural damping, reducing unwanted vibration and distortion.
The single wave rubber surround offers high damping and greater stability across temperature changes than standard rubber surrounds.
The 25 mm voice coil uses an aluminium former with a double layer winding of copper wire around an aluminium core.
The woofer uses a high-grade ferrite magnet; the tweeter uses an N35 neodymium magnet. If you're also looking to add bass, ESB's HR 10 US underseat subwoofer pairs well with a coaxial upgrade.
Explore the full range in ESB Tremila Series.
Specification
| Nominal Impedance | 4 Ohm |
|---|---|
| Nominal Power Handling | 80 Watt |
| Transient Power | 160 Watt |
| Frequency Response | 65 Hz ~ 25 KHz |
| Sensitivity | 91.5 dB 2.83v/1m |
What's Included
- 3.6C
ESB Audio
About the ESB Audio 3.6C
From our tech experts at CEN
ESB 6.5 inch coaxial speakers, with the tweeter in the centre of the woofer, rated at 80w RMS.
Who it suits
Drivers replacing tired factory speakers who want a clear improvement without relocating tweeters.
Our tech experts advise
Sizes, adapter rings and harnesses vary by vehicle, year and trim, so we confirm what your car takes before ordering rather than guessing. Door treatment matters as much as the speaker, and these repay both amplification and tuning. Installation is priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.
Explore the full ESB Audio range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all ESB Audio
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Have it Fitted By Our Team
Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.
- 1
Tell us your vehicle
Make, model and year, and what you'd like fitted.
- 2
We confirm the parts
Fascia, wiring and interfaces checked for your car, with a fitted price.
- 3
Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
More from ESB Audio
More options from the same range, in stock and ready to go
ESB 3.65 Tremila Series 2.5 Inch Component Cone Wide Range 60w RMS Pair
£99.99
View product
ESB 3.6K3 Tremila Series 3 Way Component Speaker System with Midrange and Tweeters
£299.99
ESB 3.28 Tremila Series 1.1 Inch Dome Tweeter 90w RMS Pair
£79.99
ESB 3.WB6 Tremila Series 6.5 Inch Active Ported Subwoofer Enclosure 250w RMS
£299.99
ESB 3.10D4 3000 Series 10" Dual 4 Ohm Subwoofer 300w RMS
£199.99
Frequently Asked Questions
Q: Will these speakers fit my car?
A: Most car speakers are standard sizes, but mounting depth and fitting rings vary by vehicle. Check the size in the Specification tab against your vehicle, or contact CEN with your registration and we will confirm fitment and any adapters or fitting kits you need.
Q: Do I need an amplifier to run these speakers?
A: Not always. Most speakers will run from a standard head unit, but a dedicated amplifier lets them perform at their best, particularly for component sets and higher power handling models. The RMS figure in the Specification tab is the guide to how much clean power they can use.
Q: What is the difference between coaxial and component speakers?
A: Coaxial speakers combine the tweeter and woofer in one unit for a simple like-for-like upgrade. Component sets separate the tweeter and woofer with a crossover for better imaging and detail, and suit installs where sound quality is the priority.
Q: Do these come as a pair?
A: Unless stated otherwise, car speakers are sold in pairs. Check the product title and What's Included tab, which lists exactly what is in the box.
Q: Can CEN fit these speakers for me?
A: Yes. CEN offers professional installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.
Q: What is the power rating of the ESB 3.6C?
A: 80W RMS with 160W transient power, at a nominal impedance of 4 ohms.
Q: What frequency range does the ESB 3.6C cover?
A: 65 Hz to 25 kHz, with a sensitivity of 91.5 dB (2.83V/1m).
Q: What size is the ESB 3.6C?
A: It is a 6.5 inch (165 mm) 2-way coaxial speaker.
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