

ESB HR 6C 6.5 Inch 2 Way Coaxial Car Speakers 50w RMS Pair
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ESB HR 6C 6.5"/165 mm coaxial
The HR 6C sits within ESB's Harmony range, designed to deliver accurate, full-spectrum sound at a sensible price point. The 50W RMS rating makes it a practical match for most factory head units and modest aftermarket amplifiers.
Features
- Pressed paper cone with rubber surround woofer.
- Mylar dome tweeter.
- 25 mm (woofer), 13 mm (tweeter) voice coil.
- 9.1 oz ferrite (woofer), neodymium (tweeter) magnet.
If you prefer a separate tweeter and crossover, the ESB HB1.6K2X 2-way component speaker system is worth considering.
About ESB Harmony
The Harmony brand launched in the 1980s alongside ESB's first home loudspeakers, with car speaker production following in the 1990s. The range combines solid performance with a lower price point than ESB's core line, without compromising on accurate, full-spectrum sound reproduction.
Explore the full range in ESB Harmony Series.
Specification
| Type | 2-Way Coaxial |
|---|---|
| Tweeter | 0.51”/13 mm |
| Woofer | 6.5”/165 mm |
| Impedance | 4 Ohm |
| RMS Power | 50W |
| MAX Power | 100W |
| Sensitivity | (2.83v/1m) 88dB |
| Frequency Response | 65Hz - 18KHz |
| Tweeter Dome | Mylar |
| Tweeter Magnet | Neodymium |
| Tweeter Voice Coil | 0.51”/13 mm |
| Woofer Cone | Pressed Paper |
| Woofer Magnet | 9.1 Oz Ferrite |
| Woofer Voice Coil | 1”/25 mm |
| Voice Coil | Resistance (Re) 3.3 Ohms |
| Voice Coil | Inductance @1KHz (Le) 0.2 mH |
| Free Air Resonance (Fs) | 71.2 Hz |
| Electrical “Q” (Qes) | 1.97 |
| Mechanical “Q” (Qms) | 4.95 |
| Total Speaker “Q” (Qts) | 1.41 |
| Moving Mass (Mms) | 12.9 g |
| Mech. Compliance (Cms) | 0.39 mm/N |
| Magnetic Strength (N/A) | 3.3 |
| Equivalent Compliance (Vas) | 10.4 lt |
| Effective Piston Area (Sd) | 137 sq. cm |
What's Included
- ESB HR 6C
ESB Audio
About the ESB Audio HR 6C
From our tech experts at CEN
ESB 6.5 inch coaxial speakers, with the tweeter in the centre of the woofer, rated at 50w 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
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 5C?
A: It is a 5 inch (130 mm) 2-way coaxial speaker with a 13 mm (0.51 inch) Mylar dome tweeter.
Q: How much power can the HR 5C handle?
A: It is rated at 50W RMS and 100W max, with a 4 ohm impedance and 88 dB sensitivity (2.83V/1m).
Q: Do the ESB HR 5C speakers come as a pair?
A: Yes, the HR 5C 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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