ESB 3.65 Tremila Series 2.5 Inch Component Cone Wide Range 60w RMS Pair
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The ESB 3.65 is a 2.5 inch (65 mm) wide range cone speaker from ESB Audio's Tremila Series, rated at 60W RMS (120W transient) at 4 ohms. Sold as a pair, it is designed for use in a 3-way system alongside a woofer and tweeter, or in a 2-way system as a tweeter replacement.
Key specifications
- Size: 2.5 inch / 65 mm wide range
- Power handling: 60W RMS / 120W transient
- Impedance: 4 ohm
- Frequency response: 130 Hz to 22 kHz
- Sensitivity: 86 dB (2.83V/1m)
- Voice coil: 20 mm, aluminium support, double layer winding
- Magnet: neodymium N42
- Centre plug: CNC aluminium
3.65 2.5"/65 mm Cone Widerange
The 3.65 wide range speaker works in a 3-way system with a woofer and tweeter, or in a 2-way system as a tweeter replacement. Purpose-built from the ground up, it delivers exceptional transient response and strong linearity for clear, natural midrange reproduction. Dynamic motor and suspension behaviour have been carefully optimised to minimise distortion and non-linearities.
The CNC aluminium centre plug controls and linearises high-frequency extension. Its precisely calculated sharp edges create refraction that widens the reproducible frequency spectrum. The 20 mm voice coil provides good power handling, and its low mass allows the driver to operate well beyond 20 kHz.
The ABS basket is reinforced with fibreglass, engineered for maximum torsional rigidity while keeping air-passage resistance to a minimum.
The pressed paper cone has a waterproof treatment. Paper cones offer an ideal balance of lightness, stiffness, and the ability to damp unwanted vibration.
The high-damping single-wave Perbunan® rubber surround is significantly more temperature-stable than standard rubber. The 20 mm voice coil uses an aluminium support with double layer copper-wire winding over an aluminium core.
The neodymium N42 magnet delivers considerably higher performance than standard magnet types. If you need a mid-woofer to partner the 3.65 in a 3-way build, see the ESB 4.165 4000 Series 6.5 inch component mid-woofer.
Explore the full range in ESB Tremila Series.
Specification
| - Nominal Impedance | 4 Ohm |
|---|---|
| - Nominal Power Handling | 60 Watt |
| - Transient Power | 120 Watt |
| - Frequency Response | 130 Hz ~ 22 KHz |
| - Sensitivity | 86 dB 2.83v/1m |
What's Included
- ESB 3.65
ESB Audio
About the ESB Audio 3.65
From our tech experts at CEN
The ESB 3.65 is a pair of 2.5 inch (65mm) wide range cone drivers from ESB's Tremila Series, not a component set with tweeters. Each handles 60w RMS and 120w transient at 4 ohm, with a 130 Hz to 22 kHz range and 86 dB sensitivity. A neodymium N42 magnet and CNC aluminium centre plug help it extend well into the treble.
Who it suits
Sound-quality builds that want a small driver in the dash or A-pillar covering midrange and treble. It can sit in a 3-way system between a woofer and tweeter, or replace the tweeter in a 2-way system. Pair it with a mid-woofer such as the 3.165.
Our tech experts advise
Its 86 dB sensitivity is lower than most door woofers, so level matching on a processor or amplifier is important. High-pass it at or above 130 Hz. Installation is priced per vehicle, so get in touch with your make, model and year.
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.
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Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
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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: Can the ESB 3.65 replace a tweeter?
A: Yes. The 3.65 is designed to work in a 3-way system alongside a woofer and tweeter, or in a 2-way system where it replaces the tweeter. Its response extends to 22 kHz.
Q: What size is the ESB 3.65?
A: It is a 2.5 inch (65 mm) cone wide range speaker.
Q: What is the power rating of the ESB 3.65?
A: 60W RMS with 120W transient power, at a nominal impedance of 4 ohms, and a sensitivity of 86 dB (2.83V/1m).
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