Helix Compose CB C690.2-S3 – 6″x9″ Coaxial Speakers

HELIX CB C690.2-S3

Overview
HELIX COMPOSE speakers are designed to deliver outstanding sound quality for any setup. Built with advanced materials and engineering, these speakers balance high efficiency, clarity, and durability, ensuring they perform well in all vehicle types.

Essential Sound Quality
The BASIC series provides everything needed for a powerful and clean listening experience. Each component works seamlessly with HELIX and MATCH amplifiers to ensure stable performance and clear output at every level.

High Efficiency
This model uses efficient 3 Ohm technology, allowing better compatibility with most amplifiers while maximizing sound pressure and performance. Select variants may also support 2 Ohm configurations for enhanced output.

Deep and Controlled Bass
The midbass driver combines strength and lightness with its polypropylene cone for accurate sound reproduction. A well-ventilated basket design keeps the system cool under heavy loads, while the optimized magnet and dustcap improve midrange balance.

Detailed High Frequencies
The tweeter uses a coated silk dome and a neodymium magnet to deliver crisp, natural highs with excellent detail and balance.

Features

• 2-way coaxial speaker system combining efficiency and clarity

• 3 Ohm technology for improved amplifier output

• Compact design for easy installation in limited spaces

Tweeter

• 1” / 25 mm silk dome tweeter for precise high-frequency response

• Neodymium magnet for consistent magnetic performance

Woofer

• 6 x 9” / 160 x 230 mm polypropylene cone for balanced and dynamic sound

• Sturdy steel basket with ventilation holes for better cooling and higher power handling

• Optimized magnet system for fast and accurate bass response

Crossover

• Integrated with a 6 dB slope

  Technical data

  Power handling RMS / Max.	P	100 / 150 Watts
  Frequency response		50 Hz – 22,000 Hz
  Impedance	Z	3 Ω
  Sensitivity	SPL	94 dB @ 2.83V / 1m 90 dB @ 1W / 1m
  Outer diameter	ø	235.0 x 164.0 mm / 9.25 x 6.46”
  Installation diameter	ø	218.4 x 150.6 mm / 8.60 x 5.93”
  Installation depth		74.8 mm / 2.95”
  Woofer
  Impedance	Z	3 Ω
  DC resistance	Re	3.1 Ω
  Resonance frequency	Fs	56 Hz
  Mechanical Q factor	Qms	3.73
  Electrical Q factor	Qes	0.63
  Total Q factor	Qts	0.54
  Compliance	Cms	420 μm/N
  Equivalent air volume	Vas	24.7 L
  Force factor	B*l	5.7 Tm
  Cone area	Sd	205 cm2
  Moving mass	Mms	19.1 g
  Mechanical resistance	Rms	1.81 kg/s
  Voice coil diameter	ø	25 mm
  Voice coil winding height		9.0 mm
  Max. linear excursion	Xmax	+/- 2.0 mm
  Tweeter
  Voice coil diameter	ø	25 mm
  Features
  Tweeter		Silk dome and neodymium magnet
  Midbass		Injected polypropylene cone
  Crossover		Integrated, 6 dB highpass