Focal ACX 165 S Auditor Series 2 Way 6.5" Slim Car Coaxial Speakers 55w RMS
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The Focal ACX 165 S is a slim 2-way 6.5" (16.5cm) coaxial car speaker pair from the Auditor Series, rated at 55W RMS with a shallow mounting depth of 48.5mm.
Key specifications
- Size: 6.5" (16.5cm)
- Type: 2-way compact coaxial, sold as a pair
- Power handling: 55W RMS (110W peak)
- Sensitivity: 91 dB
- Frequency response: 60Hz – 21kHz
- Impedance: 4 ohms
- Mounting depth: 48.5mm (1 7/8")
- Woofer: polypropylene cone with butyl surround
- Tweeter: adjustable inverted dome mylar
Focal Auditor ACX 165 S: 6.5" (16.5cm) 2-way compact coaxial kit
Focal technologies
The ACX 165 S delivers neutral, dynamic sound with precise treble and an improved soundstage. The 6.5" (16.5cm) polypropylene cone woofer and adjustable inverted dome mylar tweeter are hallmarks of the Focal Auditor range. At just 1 7/8" (4.8cm) deep, it fits easily into shallow door cavities where full-depth speakers won't go.
The ACX 165 S works directly off a factory head unit or OEM amplifier. Its 91 dB sensitivity means it performs well without needing high power, making it a straightforward first step into a Focal system. All Auditor speakers draw on Focal's core technologies: mylar inverted dome tweeter, polypropylene cone, butyl surround, and ferrite magnet.
If you need a 6.5" Focal upgrade with separate component speakers rather than a coaxial fit, the Focal 165 AS Access Series is a 2-way component option at 60W RMS.
Explore the full range in Focal Auditor.
Specification
| frequency response | 60-21,000 Hz |
|---|---|
| sensitivity | 91 dB |
| impedance | 4 ohms |
| mounting depth | 1-7/8" (48.5mm) |
More specs
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What's Included
- Two 2-way speakers
- Eight 1-3/8" Screws
- 8 Speed clips
- Owner's manual
Focal
About the Focal ACX 165 S
From our tech experts at CEN
Focal Auditor Series 6.5 inch coaxial speakers, with the tweeter mounted in the centre of the woofer, rated at 60w RMS.
Who it suits
Drivers replacing tired factory speakers who want a clear improvement without relocating tweeters. Auditor sits above Access, with more output and better detail for a modest step up. The slim version suits doors where mounting depth is tight.
Our tech experts advise
Sizes, adapter rings and harnesses vary by vehicle, year and trim, so we confirm what your car takes before ordering. Door treatment matters as much as the speaker, and Focal drivers repay an amplifier. 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 Focal range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Focal
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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
Focal Car Audio
To combine the pleasure of driving with the love of sound, make sure your car is fitted with quality hi-fi equipment. Focal high-fidelity sound promises sensational musical emotions to enhance every journey.
Speaker Kits
With Focal's dedicated car speakers, take advantage of a wide choice of models to compose your own customized audio system, according to your vehicle and your desires. From the Focal discovery with the Universal range to the Utopia M excellence, listening in the car takes on a whole new dimension
Subwoofer
Choose one of Focal's subwoofers (passive, active, bass-reflex, ultra-flat...) and bring powerful, deep bass. Offering a variety of models in different formats, our range meets every installation need and is the ideal audio complement.
DSP & Amplifiers
To optimize the sound quality of your installation and enhance in-car listening, we offer a range of amplifiers and DSPs to match your loudspeakers. These Focal electronics let you experience the sensations of precise, controlled and stable sound.
Accessories & Cables
Discover Focal's range of amplifiers and cables for a complete solution. As a complement to your installation, amplifiers let you experience the sensations of precise, controlled sound, and cables answer questions linked to amplification and connections between components.
Focal Car Audio
Deliver exceptional sound clarity and precision for your vehicle
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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: Do I need an amplifier to run these speakers?
A: Not always. Most speakers will run from a standard head unit, but a dedicated amplifier lets them perform at their best, particularly for component sets and higher power handling models. The RMS figure in the Specification tab is the guide to how much clean power they can use.
Q: What is the difference between coaxial and component speakers?
A: Coaxial speakers combine the tweeter and woofer in one unit for a simple like-for-like upgrade. Component sets separate the tweeter and woofer with a crossover for better imaging and detail, and suit installs where sound quality is the priority.
Q: Do these come as a pair?
A: Unless stated otherwise, car speakers are sold in pairs. Check the product title and What's Included tab, which lists exactly what is in the box.
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: How deep are the Focal ACX 165 S speakers?
A: The ACX 165 S has a mounting depth of 48.5mm (1 7/8 inches), which makes it a good choice for doors with limited space behind the speaker opening.
Q: How much power can the Focal ACX 165 S handle?
A: Focal rates the ACX 165 S at 55W RMS (110W peak) at 4 ohms, with 91 dB sensitivity. Its high sensitivity means it can run from the vehicle's original amplifier or a head unit, or from an external amplifier.
Q: What's in the box with the Focal ACX 165 S?
A: Two 2-way coaxial speakers, eight 1-3/8 inch screws, 8 speed clips and the owner's manual. Mesh/ABS grilles are included.
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