Helix Compose Basic CB K165.2-S3 FlexMount Speaker Kit 6.5 Inch 17cm 80w RMS Pair

The Helix CB K165.2-S3 is a 6.5 inch (165 mm) two-way component speaker kit from the Helix Compose Basic range, rated at 80W RMS with 3 ohm impedance, supplied as a pair. It comprises a polypropylene cone midbass, a 20 mm coated silk dome tweeter with neodymium magnet, and separate crossovers with four-stage tweeter level adjustment.

This listing is the 6.5 inch CB K165.2-S3. The Compose Basic range is also available in a 4 inch FlexMount component kit.

Key specifications

• Type: 2-way component speaker kit, supplied as a pair
• Midbass: 6.5" / 165 mm, lightweight polypropylene cone, steel basket
• Tweeter: 0.75" / 20 mm coated silk dome, neodymium magnet
• Power handling: 80W 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

6.5 inch / 165 mm speaker kit with 3 ohm impedance and FlexMount20 silk dome tweeter

The CB K165.2-S3 pairs a 6.5 inch / 165 mm midbass at 3 Ω impedance with a silk dome tweeter featuring FlexMount20 compatibility.

HELIX COMPOSE — universal speakers evolved

The Helix Compose platform was designed to combine the flexibility of universal speakers with the fit and acoustic advantages of vehicle-specific systems. The result is high efficiency, strong dynamics and sound quality that works in virtually any vehicle.

The essentials for an exceptional sound experience

The Compose Basic component systems are the entry point into the Helix Compose range. All components are tuned to work together and are optimised for use with Helix and MATCH amplifiers. The Basic tweeter also features smart mechanical engineering focused on safe, clean connection during installation.

High efficiency

Compose uses 3 ohm technology, engineered to work with Helix and MATCH amplifiers for improved efficiency and maximum sound pressure. Select models are also available as optional 2 ohm variants for even greater output with compatible amplifiers.

Powerful bass — always on point

The Compose Basic midbass driver uses a lightweight polypropylene diaphragm for strong sound performance, with a vented steel basket for improved cooling. A powerful magnet system delivers precise impulse response, and a soft polyurethane dustcap optimises frequency response in the upper midrange. The compact build suits tight installation spaces.

High frequency reproduction with unique dynamics

The Basic tweeter uses a coated silk dome and a high-efficiency neodymium magnet, delivering clear, dynamic high-frequency reproduction.

FlexMount20 — universal meets car-specific

FlexMount is a mounting system using specially developed adaptor rings. The optional FlexMount20 adaptor ring allows the universal tweeter to be installed in the vehicle's original tweeter position, giving a clean, acoustically optimised fit across a wide range of vehicles.