Helix Compose CB K100.2-S3 – 4″ Component Set

HELIX CB K100.2-S3

The HELIX COMPOSE series is designed to meet the demands of modern automotive audio systems through efficient engineering and practical design. It combines the performance of universal speakers with the adaptability of vehicle-specific systems, offering excellent sound quality, high efficiency, and compact construction suitable for any car.

Sound Quality and Performance

The BASIC component systems of the HELIX COMPOSE line provide everything needed for an enhanced in-car audio experience. The components are optimized for use with HELIX and MATCH amplifiers, ensuring balanced power output and reliable performance. The system’s design also prioritizes safety and ease of installation.

Efficiency

The 3-Ohm speaker technology improves amplifier compatibility and efficiency, providing stronger output and increased sound pressure. Optional 2-Ohm versions are available for maximum performance with compatible amplifiers.

Bass and Midrange

The midrange driver combines a lightweight polypropylene diaphragm with a stable basket that includes additional ventilation holes for better cooling. The strong magnet system ensures fast response, while the polyurethane dustcap provides balanced sound reproduction in the midrange frequencies. Its compact design allows easy installation even in limited space.

High Frequencies

The tweeter uses a coated silk dome and neodymium magnet for dynamic and precise high-frequency response. It delivers clear, detailed treble and supports multiple mounting options.

Crossover

The included crossover features a 4-stage tweeter level adjustment with a 12 dB slope and built-in tweeter protection. The compact design allows easy installation, and fine-tuning ensures even frequency distribution and a smooth sound profile.

Mounting System

The FlexMount20 system allows the tweeter to be adapted for a wide range of vehicles through specialized mounting rings. This system makes it possible to achieve a factory-fit appearance while maintaining optimal acoustic performance.

Features

• 2-way component speaker system with high efficiency and excellent sound clarity

• 3 Ohm technology for improved amplifier performance

• Compact structure suitable for installation in tight spaces

Tweeter:

• 0.75” (20 mm) silk dome tweeter with neodymium magnet

• Multiple mounting options, including flush and angle mounts

• Compatible with optional FlexMount20 adaptors for car-specific fitting

Midrange:

• 4” (100 mm) polypropylene cone for rigidity and accurate sound

• Steel basket with extra ventilation holes for cooling

• Powerful magnet for responsive performance

• Polyurethane dustcap for smooth midrange output

Crossover:

• Compact, high-quality design

• 4-stage tweeter level control with integrated protection

• 12 dB slope for precise frequency management

Technical Specifications

Power Handling:

• RMS: 60 W

• Max: 90 W

Frequency Response: 100 Hz – 22,000 Hz
Impedance: 3 Ω
Sensitivity:

• 88 dB @ 2.83V / 1m

• 84 dB @ 1W / 1m

Dimensions:

• Tweeter: 32 mm (outer), 9.8 mm (depth)

• Midrange: 99.2 mm (outer), 48.9 mm (depth), 89.5 mm (cutout)

• Crossover: 103.3 x 50.4 x 25.0 mm

Midrange Parameters

• Impedance: 3 Ω

• DC Resistance: 3.1 Ω

• Resonance Frequency: 116 Hz

• Mechanical Q (Qms): 5.05

• Electrical Q (Qes): 0.97

• Total Q (Qts): 0.81

• Compliance (Cms): 250 μm/N

• Equivalent Volume (Vas): 0.9 L

• Force Factor (B*l): 4.2 Tm

• Cone Area (Sd): 50 cm²

• Moving Mass (Mms): 7.5 g

• Mechanical Resistance (Rms): 1.09 kg/s

• Voice Coil Diameter: 25 mm

• Voice Coil Height: 8.9 mm

• Max Linear Excursion (Xmax): ±2.5 mm

Tweeter Parameters

• Impedance: 4 Ω

• Resonance Frequency: 2000 Hz

• Voice Coil Diameter: 20 mm

Component Summary

Tweeter: Compact silk dome with neodymium magnet and FlexMount20 compatibility
Midrange: Injected polypropylene cone for stability and clarity
Crossover: 12 dB high-pass filter with protection and level adjustment