ESB 3.WB6 Tremila Series 6.5 Inch Active Ported Subwoofer Enclosure 250w RMS
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The ESB 3.WB6 is a 6.5 inch (165 mm) active ported subwoofer from ESB Audio's Tremila Series, with a built-in high-current Class D amplifier delivering 250W RMS (500W max) in an MDF enclosure just 15 cm deep. A remote control is included.
Key specifications
- Driver: 6.5 inch / 165 mm, fibreglass/paper cone, ferrite magnet
- Amplifier: built-in high-current Class D
- Power: 250W RMS / 500W max
- Speaker impedance: 0.40 ohm
- Sensitivity: 88 dB
- Depth: 15 cm
- Controls: gain, low pass filter 50 Hz to 200 Hz, bass boost 0 to 12 dB, phase 0° to 180°
- Turn-on: auto power-on (REM, DC offset, auto)
- Enclosure: ported MDF, remote control included
3.WB6 6.5"/165 mm Active Ported Subwoofer
ESB's 3.WB6 packs a 6.5 inch active subwoofer into a slim 15 cm deep ported enclosure — a practical bass upgrade where space is limited. It uses a low impedance, high-efficiency driver design suited to electric vehicles, paired with an amplifier that omits the switching power supply stage to reduce noise.
Main Features
- Ultra-compact installation depth: 15 cm
- High-current Class D digital amplifier
- Power: 250W RMS / 500W max
- Speaker impedance: 0.40 ohm
- Driver: fibreglass/paper cone, ferrite magnet
- Variable gain control, low pass filter (50 Hz to 200 Hz), variable bass boost (0 to 12 dB), phase control (0° to 180°)
- Auto power-on (REM, DC offset, auto)
- Remote control included
- Enclosure material: MDF
Explore the full range in ESB Tremila Series.
Specification
| Speaker Impedance | 0.40 Ohm |
|---|---|
| Nominal Power Handling | 250 W |
| Peak Power (Max) | 500 W |
| Sensitivity | 88 dB |
What's Included
- 3.WB6
- Remote control
ESB Audio
About the ESB Audio 3.WB6
From our tech experts at CEN
An ESB Tremila Series 6.5 inch subwoofer, handling 250w RMS.
Who it suits
Drivers building a sound-quality system where the bass has to integrate with a capable front stage rather than dominate it. ESB is an Italian brand with a following among people who care more about how a system images than how loud it goes.
Our tech experts advise
Enclosure volume and tuning decide most of what you hear, and a driver like this deserves a box built to suit it rather than something off a shelf. We build enclosures at our Beeston workshop. 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
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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: 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: Does the ESB 3.WB6 need a separate amplifier?
A: No. The 3.WB6 is an active subwoofer with a built-in high-current Class D amplifier rated at 250W RMS (500W max).
Q: How deep is the ESB 3.WB6?
A: The enclosure is only 15 cm deep, so it suits installs where space is tight.
Q: Does the ESB 3.WB6 come with a remote control?
A: Yes, a remote control is included. The subwoofer also has variable gain, a 50 Hz to 200 Hz low pass filter, 0 to 12 dB bass boost and 0° to 180° phase control.
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