Description
HELIX COMPOSE Ci3 W130-S3 – 5.25″ Performance Midbass Car Speakers | 135W Peak Power
The HELIX COMPOSE Ci3 W130-S3 is a premium 5.25-inch (130 mm) performance midbass speaker from the HELIX COMPOSE i3 Series, designed to deliver powerful bass, detailed midrange, and excellent efficiency in modern car audio systems.
Developed with technology inspired by HELIX’s high-end i7 series, the Ci3 W130-S3 combines advanced materials, smart engineering, and vehicle-friendly installation features to provide outstanding sound quality and performance. It is an ideal choice for drivers looking to upgrade factory audio systems or build a high-performance component sound system.
Featuring a unique Cenosphere-coated paper cone, 3 Ω high-efficiency technology, and a rigid glass-reinforced polymer basket, the Ci3 W130-S3 delivers precise sound reproduction, excellent dynamics, and powerful midbass response while maintaining low distortion.
Key Features
- Premium 5.25″ (130 mm) performance midbass speaker
- 135 W Peak Power / 90 W RMS
- 3 Ω technology for increased amplifier efficiency
- Innovative Cenosphere-coated paper cone
- Lightweight and rigid cone construction for precise sound reproduction
- Glass-reinforced high-tech polymer basket
- Specially designed rubber surround for high linear excursion
- 25 mm (1″) voice coil for excellent power handling
- Polyurethane dust cap for improved upper midrange response
- Powerful magnet system for high efficiency and fast impulse response
- Automotive-grade ProConnect terminal
- Compatible with HELIX WireKits for plug-and-play installation
Advanced Cenosphere Cone Technology
The heart of the HELIX Ci3 W130-S3 is its innovative Cenosphere-coated paper cone. Hollow microspheres are integrated into a polyamide coating applied to the cone surface, increasing stiffness while improving internal damping.
This results in a lightweight yet extremely stable diaphragm capable of reproducing music with excellent precision, speed, and natural tonal balance.
Powerful and Controlled Midbass Performance
Designed as a dedicated midbass driver, the Ci3 W130-S3 focuses on delivering strong, accurate low and mid frequencies. The optimized cone structure and powerful motor system provide fast transient response, controlled bass impact, and detailed vocal reproduction.
The specially shaped rubber surround allows increased linear cone movement, reducing distortion during demanding playback.
Efficient 3 Ω Technology
The 3 Ω impedance design allows HELIX and MATCH amplifiers to deliver higher output power compared to traditional 4 Ω speakers. This results in improved efficiency, higher sound pressure levels, and greater dynamics without sacrificing sound quality.
The rigid polymer composite basket, reinforced with glass spheres, minimizes unwanted resonance and ensures maximum mechanical stability.
Professional Installation Features
The integrated ProConnect terminal provides a secure automotive-grade connection, supporting both traditional speaker cables and optional HELIX WireKits. This allows a clean, reliable installation without damaging factory wiring.
Technical Specifications
| Specification | Value |
|---|---|
| Speaker Type | Midbass |
| Speaker Size | 5.25″ (130 mm) |
| Peak Power | 135 W |
| RMS Power | 90 W |
| Impedance | 3 Ω |
| Frequency Response | 80 Hz – 4 kHz |
| Sensitivity | 91 dB @ 2.83V / 1m (87 dB @ 1W / 1m) |
| Cone Material | Paper with Cenosphere Coating |
| Voice Coil Diameter | 25 mm |
| Maximum Linear Excursion (Xmax) | ±3.2 mm |
| Magnet System | High Efficiency Motor |
| Outer Diameter | 130 mm |
| Installation Diameter | 116.5 mm |
| Mounting Depth | 55.4 mm |
| Connector | ProConnect |
Package Contents
- 2 × HELIX COMPOSE Ci3 W130-S3 Midbass Speakers
- Mounting Hardware
Why Choose the HELIX COMPOSE Ci3 W130-S3?
The HELIX COMPOSE Ci3 W130-S3 is an excellent choice for anyone seeking high-quality midbass performance without stepping into the flagship price range. Combining HELIX engineering, Cenosphere-coated cone technology, efficient 3 Ω design, and premium construction, it delivers powerful bass, accurate vocals, and impressive dynamics for advanced OEM upgrades and custom car audio systems.

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