Helix Compose Ci3 W165FM-S3 – 3 Ohms 6.5″ Woofers

Description

HELIX Ci3 W165FM-S3

A speaker system designed for excellent compatibility and clarity. The HELIX COMPOSE platform combines the flexibility of universal speakers with the convenience of vehicle-specific systems. Built with modern materials and precise engineering, it ensures strong dynamics, clear audio, and reliable performance in a wide range of vehicles.

Value and Performance

The HELIX COMPOSE i3 series delivers impressive sound quality with well-balanced design and durable materials. Each speaker is tuned for optimal performance when paired with HELIX and MATCH amplifiers, ensuring consistent results and efficient power use.

High Efficiency

These speakers use 3-Ohm technology for better power handling and higher efficiency. The system provides more volume and better dynamics without straining the amplifier. Select versions are also available in 2-Ohm configuration for even more output when matched with compatible amplifiers.

Cenosphere Paper Cone

The cone design uses a special lightweight coating that improves stiffness and internal damping. This structure results in a clear, accurate sound with strong detail and stability even at higher volumes.

High-Tech Polymer Basket

Made with a durable composite reinforced with glass fibers, the basket offers rigidity and resists unwanted vibrations or heat effects. The compact build supports easy installation even in tighter spaces.

FlexMount165 – Universal Meets Vehicle-Specific

The FlexMount system allows the same speaker to fit a variety of vehicles through optional adaptor rings. This makes installation easier while maintaining optimal acoustic alignment in the factory speaker position.

ProConnect – Secure and Reliable Connection

The ProConnect terminal allows the use of standard speaker wires or optional quick-connect cables. It provides a firm, polarity-safe connection built for durability and consistent signal transfer.

WireKits – Simple Plug & Play Setup

Optional WireKits let you connect components directly to the vehicle’s factory wiring or crossovers with ease. These adaptor cables meet automotive-grade standards for safety, flexibility, and reliability.

Features

• 6.5” / 165 mm performance midbass with precise, detailed sound

• High efficiency and 3-Ohm impedance for maximum amplifier power output

• Cenosphere-coated paper cone for accurate and balanced sound reproduction

• Rigid polymer composite basket reinforced with glass fibers for minimal resonance

• Rubber surround designed for extended linear cone movement

• Polyurethane dust cap for improved midrange performance

• 1” / 25 mm voice coil for solid power handling

• ProConnect terminal for secure connection or use with optional WireKits

• Strong magnet system for efficient, responsive sound

• Compatible with FlexMount165 adaptors for easy, optimized vehicle integration

• Works with optional WireKits for non-destructive installation

  Technical data

  Power handling RMS / max.	P	100 / 150 Watts
  Impedance	Z	3 Ω
  DC resistance	Re	3.0 Ω
  Frequency response		60 Hz – 3,500 Hz
  Resonance frequency	Fs	70 Hz
  Mechanical Q factor	Qms	4.17
  Electrical Q factor	Qes	1.05
  Total Q factor	Qts	0.84
  Compliance	Cms	454 µm/N
  Equivalent air volume	Vas	11.2 L
  Force factor	B*I	4.0 Tm
  Sensitivity	SPL	92 dB @ 2.83 V / 1m 88 dB @ 1W / 1m
  Cone area	Sd	133 cm²
  Moving mass	Mms	11.3 g
  Cone material		Paper with Cenosphere coating
  Mechanical resistance	Rms	1.18 kg/s
  Voice coil diameter	ø	25 mm
  Voice coil winding height		10.5 mm
  Max. linear excursion	Xmax	+/- 3.2 mm
  Outer diameter	ø	165 mm / 6.5″
  Installation diameter	ø	142 mm / 5.59″
  Installation depth		60.7 mm / 2.39″
  Features		ProConnect terminal, FlexMount165

  Compatibility

  • FlexMount165
  • WireKits