Helix Compose Ci3 C130.2-S3 – 5.25″ 3 Ohm Coaxial Speakers

HELIX Ci3 C130.2-S3

Overview

A 2-way coaxial speaker system designed for modern vehicles. The HELIX COMPOSE series combines compact design, strong materials, and vehicle-friendly installation for reliable sound performance with impressive dynamics and clarity.

Performance highlight

The i3 coaxial system provides clear and balanced sound through refined materials and efficient design, making installation easier in most cars. Each component works seamlessly with HELIX and MATCH amplifiers to ensure consistent output and performance. The new connection technology improves safety and compatibility for easier integration into any vehicle system.

High efficiency

The COMPOSE series uses advanced 3 Ohm technology for improved performance. It pairs well with HELIX and MATCH amplifiers, delivering strong output and higher sound levels with minimal power loss.

Cenosphere paper cone

A special Cenosphere coating enhances the cone’s stiffness while keeping it lightweight. This provides more accurate sound reproduction and better internal damping for precise audio across all frequencies.

High-tech polymer basket

The basket is built from a high-tech polymer composite reinforced with glass fibers. This increases durability, minimizes unwanted resonance, and resists heat distortion. The compact design also allows easier installation in tight spaces.

Stunning highs and stability

The 0.75” (20 mm) titanium dome tweeter ensures clear, detailed high frequencies with excellent stability and heat resistance, resulting in distortion-free treble performance.

ProConnect terminal

The ProConnect terminal allows secure, professional-level cable connections. It supports both standard speaker cables and quick-connect WireKits, offering flexibility, reverse polarity protection, and long-term mechanical reliability.

WireKits – Plug & Play connectivity

WireKits provide a simple, secure way to connect HELIX COMPOSE speakers to a vehicle’s original wiring harness. Built to automotive standards, they ensure a clean, non-destructive, and reliable installation.

Features

• 2-way coaxial speaker system combining efficiency and sound quality

• 3 Ohm impedance for maximum amplifier performance

• Automotive-grade ProConnect terminal supports both conventional cables and WireKit connections

Tweeter

• 0.75” / 20 mm titanium dome tweeter for crisp, accurate treble

• Neodymium magnet for strong, linear magnetic performance

Midbass

• 5.25” / 130 mm midbass with Cenosphere-coated paper cone for detailed sound

• High-tech polymer basket reinforced with glass fibers for rigidity and low resonance

• Powerful magnet system for fast and efficient response

Crossover

• Integrated with 6 dB slope

• Compatible with optional car-specific WireKits for clean, non-destructive setup

  Technical data

  Power handling RMS / Max.	P	90 / 135 Watts
  Frequency response		80 Hz – 25,000 Hz
  Impedance	Z	3 Ω
  Sensitivity	SPL	92 dB @ 2.83V / 1m 88 dB @ 1W / 1m
  Outer diameter	ø	130.0 mm / 5.12”
  Installation diameter	ø	116.5 mm / 4.59”
  Installation depth		55.4 mm / 2.18”
  Midbass
  Impedance	Z	3 Ω
  DC resistance	Re	3.0 Ω
  Resonance frequency	Fs	92 Hz
  Mechanical Q factor	Qms	2.76
  Electrical Q factor	Qes	0.90
  Total Q factor	Qts	0.68
  Compliance	Cms	374 μm/N
  Equivalent air volume	Vas	4.9 L
  Force factor	B*l	3.8 Tm
  Cone area	Sd	97 cm2
  Moving mass	Mms	7.6 g
  Mechanical resistance	Rms	1.60 kg/s
  Voice coil diameter	ø	25 mm
  Voice coil winding height		10.5 mm
  Max. linear excursion	Xmax	+/- 3.2 mm
  Tweeter
  Voice coil diameter	ø	20 mm
  Features
  Tweeter		Titanium dome and neodymium magnet
  Midbass		Paper with Cenosphere coating and ProConnect terminal
  Crossover		Integrated, 6 dB highpass

  Compatibility

  • WireKits