Product overview
50 mm / 2 inch advanced wideband with 3 Ω impedance, FlexMount50 technology and unique silicon coated paper cone
Key features
- 2” / 50 mm advanced wideband speaker with exceptional sound performance and versatile physical integration options
- High efficiency and 3 Ohms technology for maximized power output of the amplifier
- Silicon coated paper cone for excellent impulse response and unmatched frequency response
- Maximized cone area and an aluminum dust-cap directly coupled to the voice coil, achieving a wide frequency response of 300 – 20,000 Hz
- High-tech polymer composite basket reinforced with glass beads for enormous rigidity and minimized ringing
- Special rubber surround and optimized magnet system for large linear cone excursion
- Dedicated surround manufacturing allows for a smaller installation diameter and a maximized effective cone area compared to typical 50 mm speakers
- Powerful push-pull neodymium magnet system for highest efficiency and extremely low distortion
- Universal FlexMount50 mounting ring for car-specific adaption (e.g. Audi, Ford, Mercedes etc.) or universal use included in delivery
- Universal mounting ring with grille included in delivery
Technical specifications
| Power handling RMS / Max. | P / | 70 / 100 Watts |
|---|---|
| Impedance | 3 Ω |
| DC resistance | 3.1 Ω |
| Frequency response | 300 Hz – 20,000 Hz |
| Resonance frequency | 240 Hz |
| Mechanical Q factor | 3.09 |
| Electrical Q factor | 0.80 |
| Total Q factor | 0.68 |
| Compliance | 300 µm/N |
| Equivalent air volume | 0.16 L |
| Force factor | B*I | 2.8 Tm |
| Sensitivity | 89 dB @ 2.83 V / 1m / 85 dB @ 1W / 1m |
| Cone area | 19.6 cm² |
| Moving mass | 1.43 g |
| Cone material | Silicon coated paper cone |
| Mechanical resistance | 0.71 kg/s |
| Voice coil diameter | 20 mm |
| Voice coil winding height | 7 mm |
| Max. linear excursion | Xlin | +/- 2.5 mm |
| Max. mechanical excursion | +/- 3.5 mm |
| Outer diameter | 59.8 mm / 2.34" |
| Outer diameter with universal mounting ring | 70.0 mm / 2.75" |
| Installation diameter | 50.9 mm / 2.00" |
| Installation depth | 25.2 mm / 0.99" |
| Features | Powerful push-pull neodymium magnet system, / FlexMount50 |
What you are ordering
The exact HELIX model shown above, APEX catalogue SKU CI21200. Review the listed inputs, outputs, impedance and system requirements before ordering.
Technical information verified against the official Audiotec Fischer product page.
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