Helix Ci7 W200FM-S3 Installer-Package – 200 mm high-end woofer in 3 Ω technology
The Ci7 W200FM-S3 is the 8″ woofer of the HELIX COMPOSE i7 series, the high-end line of the COMPOSE platform, made in Germany and influenced by the sister brand BRAX. It is intended for universal as well as vehicle-specific installations where a 200 mm driver reproduces the bass and lower midrange.
Installer Package – Scope of Delivery
This multi-unit installer package is aimed at professional installers and workshops who fit the same model in several vehicles. The package contains:
- 8 x High-end woofer HELIX Ci7 W200FM-S3
The 3 Ω impedance is matched to HELIX and MATCH amplifiers for higher efficiency. A handmade UHD (Ultra High Damping) paper cone, a glass-reinforced polymer basket and a large 37 mm voice coil give clean impulse response and high power handling, while a compact outer diameter keeps the cone area of a standard 200 mm woofer. Car-specific FlexMount200 rings and WireKits connected to the ProConnect terminal allow non-destructive fitting.
Key Features
- 3 Ω technology: higher efficiency and more amplifier output.
- UHD paper cone: Ultra High Damping crafted paper for impulse and frequency response.
- Reinforced polymer basket: glass-bead composite for rigidity and reduced ringing.
- Rubber surround: specially shaped for high linear excursion.
- Polyurethane dustcap: tuned for the upper midrange.
- 37 mm voice coil: low thermal compression and high power handling.
- Compact outer diameter: same cone area as typical 200 mm woofers.
- ProConnect terminal: automotive-grade, works with standard speaker cable or WireKits.
- Powerful magnet system: high efficiency and low distortion.
- FlexMount200 / WireKits: designed for optional car-specific adaptors and plug-and-play cables.
- Made in Germany.
Drivers & Construction
200 mm woofer with UHD crafted paper cone (201 cm² cone area), shaped rubber surround, polyurethane dustcap, 37 mm voice coil with 13.8 mm winding height and glass-bead-reinforced polymer basket.
Acoustic Performance
Power handling 150 W RMS / 225 W max, impedance 3 Ω (Re 3.0 Ω), frequency response 35–2,500 Hz, sensitivity 92 dB at 2.83 V/1 m (88 dB at 1 W/1 m). Thiele-Small data: Fs 52 Hz, Qms 6.04, Qes 0.78, Qts 0.69, Cms 370 µm/N, Vas 20.8 l, BL 5.6 Tm, Mms 25.6 g, Rms 1.40 kg/s, Xmax ±3.9 mm.
Installation Notes
Outer diameter 195 mm (7.68″), installation diameter 173.5 mm (6.83″), installation depth 65.8 mm (2.59″). Car-specific FlexMount200 adaptors and WireKits are available separately.
Technical Specifications
| Power handling RMS / Max. | P |
150 / 225 Watts |
| Impedance | Z | 3 Ω |
| DC resistance | Re | 3.0 Ω |
| Frequency response | 35 Hz – 2,500 Hz | |
| Resonance frequency | Fs | 52 Hz |
| Mechanical Q factor | Qms | 6.04 |
| Electrical Q factor | Qes | 0.78 |
| Total Q factor | Qts | 0.69 |
| Compliance | Cms | 370 µm/N |
| Equivalent air volume | Vas | 20.8 L |
| Force factor | B*I | 5.6 Tm |
| Sensitivity | SPL | 92 dB @ 2.83 V / 1m 88 dB @ 1W / 1m |
| Cone area | Sd | 201 cm² |
| Moving mass | Mms | 25.6 g |
| Cone material | Ultra high damping (UHD) crafted paper cone | |
| Mechanical resistance | Rms | 1.40 kg/s |
| Voice coil diameter | ø | 37 mm |
| Voice coil winding height | 13.8 mm | |
| Max. linear excursion | Xmax | +/- 3.9 mm |
| Outer diameter | ø | 195 mm / 7.68″ |
| Outer diameter with universal mounting ring | ø | – |
| Installation diameter | ø | 173.5 mm / 6.83″ |
| Installation depth | 65.8 mm / 2.59″ | |
| Features | ProConnect terminal, FlexMount200 |
Scope of Delivery
8 x High-end woofer Ci7 W200FM-S3
