ESB HR 11 SW Harmony Series 11 Inch Car Spare Wheel Active Subwoofer 200w RMS
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The ESB HR 11 SW is an 11-inch (260 mm) active spare wheel subwoofer from ESB Audio's Harmony Series, with a built-in Class D amplifier rated at 200W RMS (400W max). It fits inside the rim of your spare tyre, keeping your boot space free while adding serious bass.
Key specifications
- Size: 11 inch / 260 mm
- Type: active spare wheel subwoofer, dual voice coil speaker
- Amplifier: Class D, 200W RMS / 400W max
- Frequency response: 30 Hz to 160 Hz
- Sensitivity: 92 dB (1W/1m)
- Dimensions: 360 x 360 x 126 mm (L x W x H)
- Crossover (low-pass): 50 to 150 Hz
- Bass boost: up to 12 dB
HR 11 SW 11"/260 mm active spare tyre subwoofer
A space-saving active subwoofer designed to sit inside the rim of your spare tyre, so you get serious bass without sacrificing boot space.
The HR 11 SW uses a dual voice coil speaker and a 200W Class D digital amplifier, housed in a die-cast aluminium case. Installation is straightforward, and the included remote lets you fine-tune the sound from your seat — adjusting volume, switching phase between non-inverted and inverted, setting the crossover frequency between 50 and 150 Hz, and adding up to 12 dB of bass boost. If a spare wheel fitment isn't what you're after, ESB Audio also offer the HR 10 US underseat active subwoofer as an alternative compact option.
- Easy spare wheel installation.
- Low-level and high-level inputs.
- Variable gain control, LP filter, bass boost, phase control.
- Remote control included.
Explore the full range in ESB Harmony Series.
Specification
| Amplifier Class | D |
|---|---|
| Power | 400 W (Max), 200 W (RMS) |
| Frequency Response | 30 Hz ~ 160 Hz |
| Sensitivity | 92 dB 1W/1m |
| Dim. (mm) | 360 (L) x 360 (W) x 126 (H) |
What's Included
- ESB HR 11 SW
ESB Audio
About the ESB Audio HR 11 SW
From our tech experts at CEN
An ESB 11 inch subwoofer, handling 200w 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
More from ESB Audio
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Frequently Asked Questions
Q: Do I need an amplifier for this subwoofer?
A: Yes, unless it is an active (powered) subwoofer with a built-in amplifier. Passive subwoofers need an external amplifier matched to the RMS power and impedance shown in the Specification tab.
Q: What does RMS power mean?
A: RMS is the continuous power a subwoofer can handle, and it is the number that matters when matching an amplifier. Peak or max figures describe short bursts only. Match your amplifier output to the RMS rating in the Specification tab.
Q: Can CEN build or supply an enclosure and fit everything?
A: Yes. CEN supplies enclosures and offers professional installation from our Nottingham premises, including amplifier wiring. Contact us to discuss your build.
Q: How does the ESB HR 11 SW fit in my car?
A: It is designed to sit inside the rim of your spare tyre. It measures 360 x 360 x 126 mm, so check your spare wheel well before ordering, or ask CEN to confirm fitment.
Q: Will the HR 11 SW work with my factory stereo?
A: Yes. It has both low-level and high-level (speaker) inputs, so it can connect to factory and aftermarket head units.
Q: What can I adjust with the HR 11 SW remote?
A: The included remote adjusts volume, switches phase between non-inverted and inverted, sets the crossover between 50 and 150 Hz and adds up to 12 dB of bass boost.
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