Helix Ci3 W130-S3 – 5.25″ / 130 mm performance 3 Ω midbass
The Ci3 W130-S3 is a 130 mm midbass from the COMPOSE i3 series, the value-for-money line of the HELIX COMPOSE platform, which redesigns proven universal speakers to suit modern vehicles. Its 3 Ω design is matched to HELIX and MATCH amplifiers for higher efficiency and maximum sound pressure.
A Cenosphere-coated paper cone – hollow spheres in a polyamide layer – provides stiffness and internal damping while staying light and precise. The glass-bead reinforced polymer basket resists self-resonance and heat, and the automotive-grade ProConnect terminal accepts conventional speaker wire or the optional car-specific WireKits for a non-destructive installation.
Key Features
- 5.25″ performance midbass: 130 mm driver combining high efficiency with strong sound quality
- 3 Ω technology: designed to maximise 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
- Shaped rubber surround: specially contoured to allow high linear cone excursion
- Polyurethane dust cap: tuned to optimise the upper-midrange response
- 25 mm voice coil: 1″ voice coil for high power handling
- Powerful magnet system: for 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
- 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, 10.5 mm winding height
- Basket: polymer composite reinforced with glass beads
- Surround: specially shaped rubber surround
- Terminal: ProConnect
- Delivered as: pair (2 × Ci3 W130-S3, 2 × mounting material)
Acoustic Performance
- Power handling: 90 W RMS / 135 W max
- Impedance: 3 Ω (DC resistance 3.1 Ω)
- Sensitivity: 91 dB @ 2.83 V / 1 m; 87 dB @ 1 W / 1 m
- Frequency response: 80 Hz – 4,000 Hz
- Thiele/Small: Fs 89 Hz, Qms 3.11, Qes 0.97, Qts 0.74, Vas 4.6 l, Cms 350 µm/N, Bl 4.0 Tm, Sd 98 cm², Mms 9.1 g, Rms 1.65 kg/s
- Xmax: ±3.2 mm
Installation Notes
- Outer diameter: 130 mm / 5.12″
- Installation diameter: 116.5 mm / 4.59″
- Installation depth: 55.4 mm / 2.18″
- Accessories named: WireKit CWK TES1.W-225PC and Ci3 FX-WLP.2
Technical Specifications
| Power handling RMS / max. | P | 90 / 135 Watts |
| Impedance | Z | 3 Ω |
| DC resistance | Re | 3.1 Ω |
| Frequency response | 80 Hz – 4,000 Hz | |
| Resonance frequency | Fs | 89 Hz |
| Mechanical Q factor | Qms | 3.11 |
| Electrical Q factor | Qes | 0.97 |
| Total Q factor | Qts | 0.74 |
| Compliance | Cms | 350 µm/N |
| Equivalent air volume | Vas | 4.6 L |
| Force factor | B*I | 4.0 Tm |
| Sensitivity | SPL | 91 dB @ 2.83 V / 1m 87 dB @ 1W / 1m |
| Cone area | Sd | 98 cm² |
| Moving mass | Mms | 9.1 g |
| Cone material | Paper with Cenosphere coating | |
| Mechanical resistance | Rms | 1.65 kg/s |
| Voice coil diameter | ø | 25 mm |
| Voice coil winding height | 10.5 mm | |
| Max. linear excursion | Xmax | +/- 3.2 mm |
| Outer diameter | ø | 130 mm / 5.12″ |
| Installation diameter | ø | 116.5 mm / 4.59″ |
| Installation depth | 55.4 mm / 2.18″ | |
| Features | ProConnect terminal |
Scope of Delivery
2 x Ci3 W130-S3
2 x Mounting material
