HELIX PR K165.2 – 2 Way 6.5″ Component Speakers
£259.99
Description
HELIX Ci3 K165.2FM-S2
HELIX COMPOSE. The perfect speaker for any composition.
This system is built to meet the increasing requirements of modern car audio setups. It combines durable materials and thoughtful engineering to deliver efficient performance, clear sound, and reliable installation across a wide range of vehicles.
Performance highlight
The i3 component setup provides detailed and balanced sound. Each part is designed to work smoothly with HELIX and MATCH amplifiers, ensuring consistent output and easy installation. The system supports secure wiring, simplified mounting, and compatibility with a variety of vehicles.
High efficiency
It features a 2-Ohm design that pairs effectively with compatible amplifiers to produce improved sound pressure levels and higher performance without additional load. Some models are also offered in 3-Ohm configurations for specific setups.
Cenosphere paper cone
The cone uses a Cenosphere-coated paper structure with microscopic hollow spheres inside a polyamide layer. This design improves rigidity and damping while keeping the cone lightweight, ensuring precise sound reproduction.
High-tech polymer basket
The basket is made from a reinforced polymer composite mixed with glass particles, reducing resonance and improving stability under temperature variations. The compact size also makes installation easier in tight spaces.
Clean highs and consistent stability
The 0.75” / 20 mm titanium dome tweeter is engineered for high rigidity and controlled movement. It produces clear high frequencies with minimal distortion and high durability.
Crossover
The Ci3 FX-UNI.2 crossover is designed for reliable sound separation between tweeter and midbass. It features 6-stage tweeter adjustment, a 12 dB slope, and built-in protection for the tweeter. Compact dimensions allow installation in smaller areas, and it supports COMPOSE Connect and WireKit systems for safe connections.
COMPOSE Connect
This plug-in connector system makes installation faster and safer, following automotive connection standards and ensuring polarity-safe wiring without soldering.
FlexMount20 & FlexMount165 – Universal meets car-specific
The FlexMount system uses adjustable adapter rings to fit a wide range of vehicles. It allows mounting in factory speaker positions while maintaining good acoustic alignment.
WireKits – Plug & Play integration
WireKits provide direct connection between the HELIX COMPOSE system and the vehicle’s original wiring harness. These connectors are built to automotive standards and are durable under common vehicle conditions.
Features
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2-way component speaker system for clear, accurate sound
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2-Ohm design for improved amplifier performance
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Automotive-grade connectors for secure installation (COMPOSE Connect & ProConnect)
Tweeter
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0.75” / 20 mm titanium dome tweeter for detailed treble
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Neodymium magnet for efficient performance
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Compact design with flush and angled mounting options
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Mounting pods included
Midbass
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6.5″ / 165 mm driver with Cenosphere-coated paper cone for accurate midrange
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Reinforced polymer basket for reduced vibration
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Powerful magnet system for better dynamics
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Polyurethane dustcap for balanced response
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Includes universal mounting ring and grille
Crossover
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Compact crossover for simple installation
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6-stage tweeter adjustment with protection circuit
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12 dB slope for smooth sound separation
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Compatible with optional WireKits and FlexMount adaptors
Technical data
| Power handling RMS / Max. | P | 100 / 150 Watts |
| Frequency response | 60 Hz – 25,000 Hz | |
| Impedance | Z | 2 Ω |
| Sensitivity | SPL | 94 dB @ 2.83V / 1m 88 dB @ 1W / 1m |
| Outer diameter | ø | Tweeter: 32.0 mm / 1.26” Midbass: 165.0 mm / 6.50” |
| Installation diameter | ø | Tweeter: 32.0 mm / 1.26” Midbass: 142.0 mm / 5.59” |
| Installation depth | Tweeter: 9.8 mm / 0.39” Midbass: 60.7 mm / 2.39” |
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| Dimensions crossover | 103.3 x 50.4 x 25.0 mm / 4.07 x 1.98 x 0.98” |
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| Midbass | ||
| Impedance | Z | 2 Ω |
| DC resistance | Re | 1.8 Ω |
| Resonance frequency | Fs | 74 Hz |
| Mechanical Q factor | Qms | 3.92 |
| Electrical Q factor | Qes | 0.92 |
| Total Q factor | Qts | 0.74 |
| Compliance | Cms | 370 μm/N |
| Equivalent air volume | Vas | 8.8 L |
| Force factor | B*l | 3.4 Tm |
| Cone area | Sd | 133 cm2 |
| Moving mass | Mms | 12.5 g |
| Mechanical resistance | Rms | 1.48 kg/s |
| Voice coil diameter | ø | 25 mm |
| Voice coil winding height | 11.3 mm | |
| Max. linear excursion | Xmax | +/- 3.7 mm |
| Tweeter | ||
| Impedance | Z | 4 Ω |
| Resonance frequency | Fs | 1800 Hz |
| Voice coil diameter | ø | 20 mm |
| Features | ||
| Tweeter | Ultra compact, titanium dome, neodymium magnet and FlexMount20 | |
| Midbass | Paper with Cenosphere coating, ProConnect terminal and FlexMount165 | |
| Crossover | Tweeter: 12 dB highpass, protection and level adjustment Midbass: 6 dB lowpass |
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Compatibility
- FlexMount20
- FlexMount165
- WireKits





