Helix Compose Ci3 W165FM-S2 – 2 Ohms 6.5″ Woofers

Description

HELIX Ci3 W165FM-S2

HELIX COMPOSE. Premium sound for any setup.
Engineered to meet the demands of modern vehicles, this series represents a refined redesign of universal speaker systems. The HELIX COMPOSE platform combines advanced materials, modern acoustic engineering, and practical design to deliver high efficiency, clear sound, and dynamic performance suitable for any vehicle.

Price-Performance Highlight
The i3 series is designed to offer excellent sound quality at a competitive price. High-quality components and practical engineering ensure reliable performance. All speaker impedances are optimized for use with HELIX and MATCH amplifiers, providing maximum output and consistency.

High Efficiency
This system uses 3 Ohm technology for high efficiency and improved sound pressure. Optional 2 Ohm variants are available to maximize performance with compatible amplifiers.

Cenosphere Paper Cone
The cone is coated with hollow spheres embedded in a polyamide layer, increasing stiffness and internal damping. This produces a lightweight, stable cone for precise and detailed sound reproduction.

High-Tech Polymer Basket
The polymer composite basket is reinforced with glass beads, providing rigidity with minimal resonance. It reduces distortion, resists thermal influences, and allows compact installation in tight spaces.

FlexMount165 – Universal Meets Car-Specific
The FlexMount system uses adapter rings to allow installation in a wide range of vehicles. Universal speakers can be installed in the factory mounting positions while optimizing acoustics with the corresponding adapter.

ProConnect Terminal
The ProConnect terminal offers a reliable, secure connection for standard speaker cables or flat plugs via WireKits. Connections are interlocked, reverse-polarity protected, and able to withstand mechanical and electrical stress.

WireKits – Plug & Play
WireKits allow quick connection to the vehicle’s original wiring harness or crossover. Built to automotive standards, they ensure a durable and convenient installation in harsh vehicle environments.

Features

• 6.5” / 165 mm midbass driver with versatile installation options

• 2 Ohm technology for maximum amplifier output

• Cenosphere-coated paper cone for accurate sound reproduction

• Reinforced polymer basket for rigidity and low resonance

• Rubber surround for linear cone movement

• Polyurethane dustcap for improved midrange clarity

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

• ProConnect terminal for fast, secure, and flexible wiring

• Powerful magnet system for high efficiency and precise impulse response

• Compatible with optional FlexMount165 adapters for optimized installation

• Supports optional car-specific WireKits for non-destructive integration

  Technical data

  Power handling RMS / max.	P	100 / 150 Watts
  Impedance	Z	2 Ω
  DC resistance	Re	1.8 Ω
  Frequency response		60 Hz – 3,500 Hz
  Resonance frequency	Fs	74 Hz
  Mechanical Q factor	Qms	3.92
  Electrical Q factor	Qes	0.92
  Total Q factor	Qts	0.74
  Compliance	Cms	370 µm/N
  Equivalent air volume	Vas	8.8 L
  Force factor	B*I	3.5 Tm
  Sensitivity	SPL	94 dB @ 2.83 V / 1m 88 dB @ 1W / 1m
  Cone area	Sd	133 cm²
  Moving mass	Mms	12.5 g
  Cone material		Paper with Cenosphere coating
  Mechanical resistance	Rms	1.48 kg/s
  Voice coil diameter	ø	25 mm
  Voice coil winding height		11.3 mm
  Max. linear excursion	Xmax	+/- 3.7 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