Helix Ci3 W200FM-S2

Helix Ci3 W200FM-S2 – 8″ / 200 mm performance 2 Ω woofer

The Ci3 W200FM-S2 is a 200 mm woofer from the COMPOSE i3 series. The COMPOSE i3 line is the price-performance series of the HELIX COMPOSE platform, a redesign of proven universal speakers that aims to combine the strengths of universal drivers with those of vehicle-specific systems. According to HELIX, the i3 series adopts mechanical technologies derived from the i7 series, and its impedances are matched to HELIX and MATCH amplifiers. This version uses a 2 Ω impedance to extract maximum power from a suitable amplifier.

Its paper cone is coated with Cenospheres – hollow spheres in a polyamide layer – for added stiffness and internal damping at low weight, and it sits in a glass-bead reinforced polymer basket that resists self-resonance and heat. The chassis keeps a compact outer diameter while offering the cone area of a typical 200 mm driver, and a universal mounting ring with grille is included. The automotive-grade ProConnect terminal and readiness for car-specific FlexMount200 adaptors and WireKits allow a clean, non-destructive installation in the original mounting location.

Key Features

• 8″ performance woofer: 200 mm driver combining sound quality with flexible installation options
• 2 Ω technology: high efficiency and 2 Ω impedance for maximum amplifier power output
• Cenosphere-coated paper cone: hollow micro-spheres embedded in a polyamide layer stiffen the paper cone and raise its internal damping, keeping it light yet stable for precise, detailed reproduction
• Glass-bead reinforced polymer basket: a high-tech polymer composite that is rigid, rings less, avoids flux modulation, copes well with heat and allows a more compact basket
• 25 mm voice coil: 1″ voice coil for high power handling
• Compact chassis, full cone area: compact outer diameter with the same cone area as typical 200 mm drivers
• Powerful magnet system: for high efficiency and good impulse response
• ProConnect terminal: automotive-grade, interlocking terminal with reverse-polarity protection; accepts standard speaker cable or flat plugs via the optional WireKits and withstands high electrical and mechanical stress
• Klippel-verified development: driver development verified with the Klippel Analyzer System
• Universal mounting ring with grille: supplied in the box for universal installation
• FlexMount200 ready: designed for optional car-specific FlexMount200 adaptor rings for acoustically optimised installation in the original mounting position
• WireKit ready: designed for optional car-specific WireKits – adaptor cables built to automotive standards that connect the speaker to the factory harness or an optional crossover without cutting the original wiring

Drivers & Construction

• Cone: paper with Cenosphere coating, polyurethane dust cap
• Voice coil: 25 mm diameter, 11.9 mm winding height
• Basket: polymer composite reinforced with glass beads
• Surround: specially shaped rubber surround
• Terminal: ProConnect
• Delivered as: pair: 2 × Ci3 W200FM-S2, 2 × universal mounting ring with grille, 2 × mounting material

Acoustic Performance

• Power handling: 100 W RMS / 150 W max
• Impedance: 2 Ω (DC resistance 1.8 Ω)
• Sensitivity: 96 dB @ 2.83 V / 1 m; 90 dB @ 1 W / 1 m
• Frequency response: 50 Hz – 3,000 Hz
• Thiele/Small: Fs 72 Hz, Qms 4.56, Qes 1.09, Qts 0.88, Vas 14.5 l, Cms 230 µm/N, Bl 4.0 Tm, Sd 214 cm², Mms 20.8 g, Rms 2.07 kg/s
• Xmax: ±4.0 mm

Installation Notes

• Outer diameter: 195 mm / 7.68″ (208.9 mm / 8.22″ with universal mounting ring)
• Installation diameter: 173.5 mm / 6.83″
• Installation depth: 63.7 mm / 2.51″
• FlexMount200: car-specific adaptor rings listed as accessories: CFMK200 POR.1, POR.5, POR.6, TES.1, TES.2, AUD.1, AUD.2
• Other accessories named: WireKits CWK FX.W-550CC and CWK TES1.W-225PC, CiA FR200.10

Technical Specifications

Scope of Delivery

2 x Ci3 W200FM-S2
2 x Universal mounting ring with grille
2 x Mounting material