Helix Compose i5 Ci5 W165FM-S3 Midbass Woofer 6.5 Inch FlexMount 125w RMS
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The HELIX Ci5 W165FM-S3 is a 6.5-inch midbass FlexMount woofer from the COMPOSE i5 series. It handles 125W RMS.
Developed Inside the Vehicle
COMPOSE is HELIX’s answer to modern car design. Developed “inside the vehicle, for the vehicle”, it blends universal speakers with the advantages of vehicle-specific systems.
3 Ohm Efficiency
Smart 3-ohm technology raises efficiency and maximum sound pressure. Impedances are matched to HELIX and MATCH amplifiers, so the pairing always delivers full performance.
FlexMount Fitting
The i5 series uses HELIX’s FlexMount system, simplifying installation across a wide range of vehicles and factory speaker positions.
Specification
| Power handling | RMS / Max. P |
|---|---|
| Impedance | Z 3 Ω |
| Frequency response | 50 Hz - 5,000 Hz |
| Sensitivity | SPL 92 dB @ 2.83 V / 1m |
| Cone | area Sd 131 cm² |
| Cone | material Silicon coated paper cone |
| Voice coil | diameter ø 37 mm |
| Voice coil | winding height 13.7 mm |
More specs
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What's Included
- 2x Ci5 W165FM-S3
- 2x Mounting material
About the brand
Helix
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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.
