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The ESB HR 4C is a 4 inch (100 mm) 2-way coaxial car speaker pair from the ESB Harmony range, rated at 45W RMS (90W max). It features a pressed paper cone woofer and a 13 mm Mylar dome tweeter, making it a straightforward factory speaker upgrade.
Key specifications
- Size: 4 inch / 100 mm
- Type: 2-way coaxial
- Power handling: 45W RMS, 90W max
- Impedance: 4 ohm
- Sensitivity: 87 dB (2.83V/1m)
- Frequency response: 80 Hz – 18 kHz
- Tweeter: 13 mm Mylar dome, neodymium magnet
- Woofer: pressed paper cone, 6.4 oz ferrite magnet
ESB HR 4C 4"/100 mm coaxial
Features
- Pressed paper cone woofer with rubber surround.
- Mylar dome tweeter.
- 20 mm (woofer), 13 mm (tweeter) voice coil.
- 6.4 oz ferrite (woofer), neodymium (tweeter) magnet.
Prefer a separate tweeter and crossover? The ESB HB1.6K2X 2-way component speaker system is an alternative from the ESB range with a 12 dB tweeter crossover.
About ESB Harmony
The Harmony brand was launched in the 1980s alongside ESB's first home loudspeakers.
Harmony car speakers followed in the 1990s, combining high-quality performance at a lower price than ESB's own speakers, with a focus on high-fidelity reproduction across the full sound spectrum.
Explore the full range in ESB Harmony Series.
Specification
| Type | 2-Way System |
|---|---|
| Tweeter | 0.51”/13 mm |
| Woofer | 4”/100 mm |
| Impedance | 4 Ohm |
| RMS Power | 45W |
| Max Power | 90W |
| Sensitivity | (2.83v/1m) 87dB |
| Frequency Response | 80Hz - 18KHz |
| Tweeter Dome | Mylar |
| Tweeter Magnet | Neodymium |
| Tweeter Voice Coil | 0.51”/13 mm |
| Woofer Cone | Pressed Paper |
| Woofer Magnet | 6.4 Oz Ferrite |
| Woofer Voice Coil | 0.8”/20 mm |
What's Included
- ESB HR 4C
ESB Audio
About the ESB Audio HR 4C
From our tech experts at CEN
ESB 4 inch coaxial speakers, with the tweeter in the centre of the woofer, rated at 45w RMS.
Who it suits
Drivers replacing tired factory speakers who want a clear improvement without relocating tweeters.
Our tech experts advise
Sizes, adapter rings and harnesses vary by vehicle, year and trim, so we confirm what your car takes before ordering rather than guessing. Door treatment matters as much as the speaker, and these repay both amplification and tuning. 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: How do I choose the right amplifier for my speakers or subwoofer?
A: Match the amplifier's RMS output per channel to the RMS handling of your speakers or subwoofer at the same impedance. The Specification tab lists the power figures. If in doubt, contact CEN with your setup and we will recommend a match.
Q: What size is the ESB HR 4C?
A: It is a 4 inch (100 mm) 2-way coaxial speaker with a 13 mm (0.51 inch) Mylar dome tweeter.
Q: How much power can the HR 4C handle?
A: It is rated at 45W RMS and 90W max, with a 4 ohm impedance and 87 dB sensitivity (2.83V/1m).
Q: Do the ESB HR 4C speakers come as a pair?
A: Yes, the HR 4C is sold as a pair.
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.
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