Description

HELIX COMPOSE Ci5 S200FM-D2 – 8″ Dual Voice Coil Hybrid Flat Subwoofers (200W RMS, 400W Peak, 2×2Ω)

The HELIX COMPOSE Ci5 S200FM-D2 – 8″ Hybrid Flat Subwoofers (200W RMS, 400W Peak, 2×2Ω) combine the performance of a powerful subwoofer with the precision of a high-quality mid-woofer. Developed for demanding car audio enthusiasts, these 200 mm woofers deliver deep, controlled bass, exceptional dynamics, and flexible amplifier compatibility thanks to their dual voice coil 2×2 Ohm design.

With an ultra-shallow 47 mm installation depth, advanced HELIX engineering, and FlexMount200 compatibility, the Ci5 S200FM-D2 is an ideal solution for BMW under-seat installations, Mercedes front subwoofer applications, and custom compact audio builds.

HELIX COMPOSE – Premium Sound Meets Smart Installation

The HELIX COMPOSE platform was created to combine universal speaker performance with vehicle-specific integration. Innovative materials, advanced engineering, and practical installation solutions make the Ci5 S200FM-D2 a perfect choice for modern vehicle audio upgrades.

Hybrid Woofer Concept – Subwoofer and Mid-Woofer Combined

The Ci5 S200FM-D2 offers the advantages of both a subwoofer and a mid-woofer in one compact design.

With a frequency range of 25 Hz – 500 Hz, it provides:

• Deep and powerful low frequencies
• Fast midbass response
• High output capability
• Excellent musical accuracy
• Controlled performance at high volume levels

Dual Voice Coil 2×2 Ohm Design

The 2×2 Ohm dual voice coil configuration provides maximum flexibility when designing a car audio system.

Benefits include:

• Easy matching with different amplifiers
• Flexible wiring configurations
• Maximum amplifier performance
• Suitable for mono, 2-channel, and multi-channel systems

This makes the Ci5 S200FM-D2 an excellent choice for advanced custom installations.

Exceptional Bass Performance

Thanks to its impressive ±7.5 mm linear excursion, the Ci5 S200FM-D2 can move large amounts of air while maintaining control and low distortion.

Advantages:

• Higher sound pressure levels
• Stronger bass impact
• Improved dynamics
• Cleaner low-frequency reproduction

Lightweight Polypropylene Cone

The injected polypropylene cone provides the perfect balance between stiffness and low weight.

This construction ensures:

• Accurate bass response
• Excellent durability
• Reduced distortion
• Fast transient response

High-Tech Polymer Composite Basket

HELIX uses a reinforced polymer basket with glass spheres to achieve maximum rigidity and reduced unwanted resonance.

Benefits:

• High structural stability
• Minimal ringing
• Improved acoustic performance
• Compact dimensions for difficult installations

Ultra-Shallow Installation Design

With only 47 mm installation depth, the Ci5 S200FM-D2 is designed for vehicles where space is extremely limited.

Ideal applications:

• BMW under-seat subwoofer upgrades
• Mercedes front subwoofer locations
• Compact custom enclosures
• OEM audio system improvements

FlexMount200 Compatibility

The FlexMount200 system allows professional integration into original vehicle mounting positions using dedicated adapters.

Benefits:

• OEM-style installation
• Improved acoustic positioning
• Secure mounting solution
• No unnecessary modifications

Key Features

• 8″ (200 mm) Hybrid Flat Subwoofer
• 200 Watts RMS / 400 Watts Peak
• Dual Voice Coil 2×2 Ohm Design
• Frequency Response: 25 Hz – 500 Hz
• High ±7.5 mm Linear Excursion
• Ultra-Shallow 47 mm Mounting Depth
• Lightweight Injected Polypropylene Cone
• Glass-Reinforced High-Tech Polymer Basket
• Powerful Magnet System
• Excellent Efficiency and Dynamics
• FlexMount200 Compatible
• Designed for BMW and Mercedes Applications

Technical Specifications

Package Includes

• 2 × HELIX COMPOSE Ci5 S200FM-D2 Hybrid Flat Subwoofers
• Mounting Hardware

Why Choose HELIX COMPOSE Ci5 S200FM-D2?

The HELIX COMPOSE Ci5 S200FM-D2 is designed for enthusiasts who demand powerful bass, flexible amplifier configuration, and premium sound quality in a compact package. Its dual voice coil design, shallow mounting depth, high excursion capability, and HELIX FlexMount200 compatibility make it an excellent upgrade for BMW, Mercedes, and custom high-performance car audio systems.

Price includes 2 speakers (pair).