ESB 3.WB8 Tremila Series 8 Inch Active Ported Subwoofer Enclosure 300w RMS
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The ESB 3.WB8 is an 8 inch (200 mm) active ported subwoofer from ESB Audio's Tremila Series, featuring a built-in high-current Class D amplifier delivering 300W RMS (600W max) in an MDF enclosure just 15 cm deep.
This listing is the 8 inch model. The Tremila Series active ported subwoofer is also available as the ESB 3.WB6 in 6.5 inch with 250W RMS.
Key specifications
- Driver: 8 inch / 200 mm, fibreglass/paper cone, ferrite magnet
- Amplifier: built-in high-current Class D
- Power: 300W RMS / 600W max
- Speaker impedance: 0.25 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.WB8 8"/200 mm Active Ported Subwoofer
A compact, self-contained subwoofer that fits where full-size boxes won't, without sacrificing bass output.
The 3.WB8 combines a ported MDF enclosure with a built-in Class D amplifier in a unit just 15 cm deep. Its 0.25 ohm speaker impedance allows the amplifier to run without a switching power supply, reducing noise and improving efficiency — a setup particularly well suited to electric and hybrid vehicles.
Main Features
- Ultra-compact build at only 15 cm depth, easy to install
- High-current Class D digital amplifier
- Power: 300W RMS / 600W max
- Speaker impedance: 0.25 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 | 0.25 Ohm |
|---|---|
| Nominal Power Handling | 300 W |
| Peak Power (Max) | 600 W |
| Sensitivity | 88 dB |
What's Included
- 3.WB8
- Remote control
ESB Audio
About the ESB Audio 3.WB8
From our tech experts at CEN
An ESB Tremila Series 8 inch subwoofer, handling 300w 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.WB8 need a separate amplifier?
A: No. The 3.WB8 is an active subwoofer with a built-in high-current Class D amplifier rated at 300W RMS (600W max).
Q: How deep is the ESB 3.WB8?
A: The enclosure is just 15 cm deep, so it fits where full-size subwoofer boxes will not.
Q: Is the ESB 3.WB8 suitable for electric or hybrid vehicles?
A: Yes. Its 0.25 ohm speaker allows the amplifier to run without a switching power supply, reducing noise, which ESB describes as well suited to electric and hybrid vehicles.
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