Helix Compose i5 Ci5 W200FM-S3 Woofers 8 Inch FlexMount 125w Pair
The Helix Compose i5 Ci5 W200FM-S3 is an 8-inch (200 mm) advanced woofer rated at 125w, with 3 Ω impedance and FlexMount200 compatibility, from the Helix Compose i5 range.
200 mm / 8 inch advanced woofer with 3 Ω impedance, FlexMount200 technology and silicon-coated paper cone
Key specifications
- Size: 8 inch / 200 mm
- Power handling: 125w
- Impedance: 3 Ω
- Voice coil: 1.38" / 35 mm
- Cone material: Silicon-coated paper
- Compatible with FlexMount200 adaptors and optional WireKits
Features
- 8" / 200 mm advanced woofer with versatile physical integration options
- High efficiency and 3 Ω technology for maximised amplifier power output
- Silicon-coated paper cone combines wideband performance with deep, controlled bass reproduction
- Suits both 2-way (midbass) and 3-way (dedicated woofer) system configurations
- High-tech polymer composite basket reinforced with glass beads for rigidity and minimised ringing
- Specially shaped rubber surround for high linear cone excursion
- Aluminium dust cap reduces cone breakup at the centre and optimises frequency response in the upper midrange
- Large 1.38" / 35 mm voice coil for minimum thermal compression and high power handling
- Compact outer diameter achieves the same cone area as typical 200 mm chassis
- Automotive-grade ProConnect terminal supports conventional speaker cables or optional WireKits for a fast, secure, fail-safe connection
- Powerful magnet system with low resonance frequency for strong bass and high SPL
- Measured and verified using the KLIPPEL® Analyzer System
- Designed for optionally available car-specific FlexMount200 adaptors for acoustically optimised integration in the vehicle's original mounting location
- Compatible with optionally available car-specific WireKits for non-destructive installation
The Ci5 W200FM-S3's silicon-coated paper cone is stiff yet lightweight, with high damping to suppress unwanted resonances — the foundation of its wide midrange response. An aluminium dust cap reduces partial vibrations at the centre of the cone and refines frequency response in the upper midrange. A 35 mm voice coil handles high power levels while keeping thermal compression to a minimum.
Despite its compact outer diameter, the Ci5 W200FM-S3 achieves the same cone area as typical 8-inch drivers. Its magnet system delivers exceptional linear excursion for high SPL and strong bass power handling, while the driver still reaches well into the upper midrange. All performance data is measured and verified using the KLIPPEL® Analyzer System. If your build also requires a compact midrange driver, the Helix Compose i5 Ci5 M80FM-S3 3-inch midrange is designed for the same FlexMount system.
Specification:
| Power handling | RMS / Max 125 / 175 Watts |
|---|---|
| Impedance | 3 Ω |
| DC resistance | 3.2 Ω |
| Frequency response | 30 Hz - 8,450 Hz |
| Resonance frequency | 57.1 Hz |
| Mechanical Q factor | 3.74 |
| Electrical Q factor | 0.84 |
| Total Q factor | 0.68 |
| Compliance | 344 µm/N |
| Equivalent air volume | 21.7 L |
| Force factor | 5.6 Tm |
| Sensitivity | 93 dB @ 2.83 V / 1m 89 dB @ 1W / 1m |
| Cone | area 211 cm² |
| Moving mass | 22.7 g |
| Cone | material: Silicon-coated paper cone |
| Mechanical resistance | 2.16 kg/s |
| Voice coil | diameter 35 mm |
| Voice coil | winding height 15.6 mm |
| Max. linear excursion (82 % BL) | +/- 5.5 mm |
| Max. mechanical excursion | +/- 12.7 mm |
| Outer diameter | 195 mm / 7.68" |
| Installation diameter | 173.5 mm / 6.83" |
| Installation depth | 65.8 mm / 2.59" |
| Features | ProConnect terminal, FlexMount200 |
What's Included
- 2 x Ci5 W200FM-S3
- 2 x Mounting Material
