Product overview
80 mm / 3.15 inch advanced midrange with 3 Ω impedance, FlexMount80 technology and unique silicon coated paper cone
Key features
- 3.15” / 80 mm advanced midrange 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
- 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 80 mm speakers
- Aluminum dustcap for optimized frequency response in the upper midrange area
- Automotive grade FlexConnect terminal for fast, secure and fail-safe connection
- Powerful push-pull neodymium magnet system for highest efficiency and extremely low distortion
- Two universal FlexMount80 mounting rings for car-specific adaption (e.g. Mercedes, Porsche, Tesla etc.) or universal use included in delivery
- Optionally available: CFM80-100 adaptor ring that enables the use of optionally available car-specific FlexMount100 adaptors for an acoustically optimized and professional integration into the vehicle’s original mounting location
- Universal mounting ring with grille included in delivery
- Designed for optionally available, car-specific WireKits which allow a non-destructive integration
Technical specifications
| Power handling RMS / Max. | P / | 90 / 135 Watts |
|---|---|
| Impedance | 3 Ω |
| DC resistance | 3.1 Ω |
| Frequency response | 200 Hz – 6,000 Hz |
| Resonance frequency | 156 Hz |
| Mechanical Q factor | 3.68 |
| Electrical Q factor | 0.75 |
| Total Q factor | 0.63 |
| Compliance | 407 µm/N |
| Equivalent air volume | 0.7 L |
| Force factor | B*I | 3.2 Tm |
| Sensitivity | 92 dB @ 2.83 V / 1m / 88 dB @ 1W / 1m |
| Cone area | 36 cm² |
| Moving mass | 2.6 g |
| Cone material | Silicon coated paper cone |
| Mechanical resistance | 0.68 kg/s |
| Voice coil diameter | 20 mm |
| Voice coil winding height | 7 mm |
| Max. linear excursion | Xlin | +/- 2.5 mm |
| Max. mechanical excursion | +/- 4.5 mm |
| Outer diameter | 78.5 mm / 3.09" |
| Outer diameter with universal mounting ring | 88.9 mm / 3.50" |
| Installation diameter | 69.5 mm / 2.74" |
| Installation depth | 30.2 mm / 1.19" |
| Features | FlexConnect terminal, powerful push-pull neodymium magnet system, / FlexMount80 |
What you are ordering
The exact HELIX model shown above, APEX catalogue SKU CI21300. 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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