Helix Compose Basic CB K130.2-S3 FlexMount Speaker Kit 5 Inch 13cm 70w RMS Pair

The Helix CB K130.2-S3 is a 5.25 inch (130 mm) two-way component speaker kit from the Helix Compose Basic range, rated at 70W RMS with 3 ohm impedance. It pairs a polypropylene cone midbass with a 20 mm coated silk dome tweeter and separate crossovers, supplied as a pair.

This listing is the 5.25 inch kit. The Compose Basic range is also available in a 4 inch component kit.

Key specifications

• Type: 2-way component speaker kit, supplied as a pair
• Midbass: 5.25" / 130 mm, lightweight polypropylene cone, steel basket
• Tweeter: 0.75" / 20 mm coated silk dome, neodymium magnet
• Power handling: 70W RMS
• Impedance: 3 ohm
• Crossover: separate, 4-stage tweeter level adjustment, integrated tweeter protection, 12 dB slope for tweeter
• Tweeter mounting: flush and angle-mount pods included, FlexMount20 adaptors optional

5.25 inch / 130 mm speaker kit with 3 ohm impedance and FlexMount20 silk dome tweeter

The CB K130.2-S3 combines a 5.25 inch / 130 mm midbass with 3 Ω impedance and a silk dome tweeter with FlexMount20 technology.

Helix Compose — universal speakers evolved

The Helix Compose platform was developed in response to the demands of modern vehicle integration. It combines classic universal speaker design with the advantages of vehicle-specific systems — delivering high efficiency, strong dynamics and sound quality that fits any installation.

The essentials for an exceptional sound experience

The Compose Basic component systems are the entry point into the Helix Compose range. All components are voiced to work together and are optimised for use with Helix and MATCH amplifiers for maximum performance and output.

The Basic tweeter is engineered with smart mechanical design and secure connection technology, making professional integration straightforward.

High efficiency

Compose Basic uses 3 ohm technology, which works in harmony with Helix and MATCH amplifiers to deliver a clear gain in efficiency and maximum sound pressure. Select models are also available as optional 2 ohm variants for maximum power output with a compatible amplifier.

Powerful bass — always on point

The Compose bass-midrange driver combines high efficiency with quality sound reproduction. Key features include:

• Lightweight polypropylene diaphragm for responsive, accurate bass
• Sturdy steel basket with ventilation holes for improved cooling
• Powerful magnet system for ideal impulse response
• Soft polyurethane dustcap for optimised upper midrange frequency response
• Compact build suited to tight installation spaces

High-frequency reproduction with unique dynamics

The Basic tweeter uses a coated silk dome and a highly efficient neodymium magnet, delivering precise, dynamic high-frequency reproduction and clear, detailed sound.

FlexMount20 — universal meets car-specific

FlexMount is a mounting system using specially developed adaptor rings. It allows Compose FlexMount tweeters to be installed in a wide range of vehicles in their original tweeter position. The optional FlexMount20 adaptor ring makes installation acoustically optimised and straightforward.