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The ESB HR 6 US P is a 6.5 inch (165 mm) active underseat subwoofer from ESB Audio's Harmony range, rated at 250W RMS (500W max) via a built-in Class D amplifier, in a compact 220 x 190 x 76 mm enclosure.
This listing is the 6.5 inch model. The ESB Harmony underseat subwoofer range is also available as the ESB HR 10 US 10 inch 130W RMS.
Key specifications
- Size: 6.5 inch / 165 mm
- Type: active (powered) underseat subwoofer
- Power: 250W RMS, 500W max (Class D)
- Speaker impedance: 0.45 ohm
- Frequency response: 20 Hz to 150 Hz
- Sensitivity: 92 dB (1W/1m)
- Dimensions: 220 x 190 x 76 mm (L x W x H)
- Inputs: low-level RCA and high-level (speaker)
- Low-pass filter: 50 to 150 Hz; bass boost 0 to 6 dB
HR 6 US P 6.5"/165 mm active underseat subwoofer
The HR 6 US P delivers improved acoustic quality and rated power in a ready-to-use amplified subwoofer. Its extremely compact 22 x 19 x 7.6 cm footprint means it can be fitted under most car seats without modification.
Power is provided by a Class D amplifier section rated at 250W RMS and up to 500W maximum, aided by a very low speaker impedance of 0.45 ohm.
The control panel gives access to input gain, LP filter, bass boost and phase settings. Both low-level RCA and high-level speaker inputs are included for maximum installation flexibility.
- Easy underseat installation.
- Low-level RCA 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
| Power | 500 W (Max), 250 W (RMS) |
|---|---|
| Speaker Impedance | 0.45 Ohm |
| Frequency Response | 20 Hz ~ 150 Hz |
| Sensitivity | 92 dB 1W/1m |
| Dim. (mm) | 220 (L) x 190 (W) x 76 (H) |
| THD | 0.05% |
| Output Impedance | 0.4 Ohm |
| Voltage | 14.4V (10V - 16V) |
| Audio | In Sens. RCA Input: 150mV - 6V Speaker Input: 1V - 8V |
| Low-Pass Filter | 50Hz - 150Hz |
| Bass Boost | 0 - 6dB |
| Phase Switch | 0 - 180° |
| Magnet | Type Ferrite |
| Enclosure Housing | Aluminum |
| Remote Control | Wired |
What's Included
- ESB HR 6 US P
ESB Audio
About the ESB Audio HR 6 US P
From our tech experts at CEN
An ESB 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: 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 HR 6 US P need a separate amplifier?
A: No. It is an active subwoofer with a built-in Class D amplifier rated at 250W RMS (500W max).
Q: Will the HR 6 US P work with my factory stereo?
A: Yes. It accepts high-level (speaker) inputs (1V to 8V) as well as low-level RCA inputs (150mV to 6V), so it works with factory and aftermarket head units.
Q: How big is the HR 6 US P?
A: It measures 220 mm (L) x 190 mm (W) x 76 mm (H), small enough to fit under most seats or in other tight spaces.
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