ESB 3.165 Tremila Series 6.5 Inch Component Mid Woofer 120w RMS Pair
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The ESB 3.165 is a 6.5 inch (165 mm) component mid-woofer from ESB Audio's Tremila Series, rated at 120W RMS (240W transient) at 4 ohms and sold as a pair.
The 3.165 is also the mid-woofer supplied in ESB's 3.6K2X 2-way and 3.6K3 3-way component systems. Matching Tremila tweeters are the 3.25 (1 inch) and 3.28 (1.1 inch). If you need a step-up 6.5 inch option, ESB also offer the 4.165 from the 4000 Series at 150W RMS.
Key specifications
- Size: 6.5 inch / 165 mm
- Power handling: 120W RMS / 240W transient
- Impedance: 4 ohm
- Frequency response: 65 Hz to 9 kHz
- Sensitivity: 91.5 dB (2.83V/1m)
- Cone: pressed paper with waterproof treatment
- Voice coil: 25 mm, aluminium former, double-layer winding
- Magnet: high-grade ferrite
- Basket: ABS reinforced with fibreglass
- Sold as a pair
3.165 6.5"/165 mm Mid-Woofer
A well-engineered 6.5 inch mid-woofer built for clarity and durability, sold as a pair.
The ABS basket is reinforced with fibreglass for maximum torsional rigidity while keeping airflow resistance low, so the driver stays stable under load without choking itself.
The pressed paper cone uses a waterproof treatment. Paper cones balance lightness, stiffness and natural damping to keep distortion in check.
The surround is a high-damping, single-wave Perbunan® rubber edge. It handles temperature changes more consistently than standard rubber, keeping performance predictable in a car environment.
The 25 mm voice coil sits on an aluminium former with a double-layer winding of copper wire on an aluminium core, driven by a high-grade ferrite magnet for efficient, consistent output.
Explore the full range in ESB Tremila Series.
Specification
| Nominal Impedance | 4 Ohm |
|---|---|
| Nominal Power Handling | 120 Watt |
| Transient Power | 240 Watt |
| Frequency Response | 65 Hz ~ 9 KHz |
| Sensitivity | 91.5 dB 2.83v/1m |
What's Included
- ESB 3.165
ESB Audio
About the ESB Audio 3.165
From our tech experts at CEN
The ESB 3.165 is a pair of 6.5 inch (165mm) mid-woofers from ESB's Tremila Series, sold without tweeters. Each handles 120w RMS and 240w transient at 4 ohm, with 91.5 dB sensitivity and a 65 Hz to 9 kHz range. It has a waterproofed pressed paper cone, a Perbunan rubber surround and a fibreglass-reinforced ABS basket.
Who it suits
Builders creating their own component set, or replacing the woofers in an existing Tremila system. It is the mid-woofer used in the 3.6K2X and 3.6K3 systems. Match it with the Tremila 3.25 or 3.28 tweeters, or step up to the 150w RMS 4.165.
Our tech experts advise
Run it from an amplifier through a passive crossover or a processor so it is not asked to play high treble. A solid baffle and door treatment matter as much as the driver. 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.
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ESB 3.28 Tremila Series 1.1 Inch Dome Tweeter 90w RMS Pair
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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: What frequency range does the ESB 3.165 cover?
A: 65 Hz to 9 kHz, with a sensitivity of 91.5 dB (2.83V/1m). As a mid-woofer it is designed to work with a separate tweeter in a component system.
Q: What is the power rating of the ESB 3.165?
A: 120W RMS with 240W transient power, at a nominal impedance of 4 ohms.
Q: Is the 3.165 the same woofer used in the ESB 3.6K2X and 3.6K3?
A: Yes. The 3.165 mid-woofer is supplied in both the 3.6K2X 2-way and 3.6K3 3-way Tremila component systems.
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