Product overview
5.25 inch / 130 mm high-end midbass with 3 Ω impedance and novel UHD paper cone
Key features
- 5.25” / 130 mm high-end midbass which combines high efficiency with outstanding sound performance
- 3 Ohms technology for maximized power output of the amplifier
- Ultra High Damping (UHD) crafted paper cone for outstanding impulse response and unmatched frequency response
- High-tech polymer composite basket reinforced with glass beads for enormous rigidity and minimized ringing
- Specially shaped rubber surround for high linear cone excursion
- Polyurethane dustcap for optimized frequency response in the upper midrange area
- 1” / 25 mm voice coil ensures minimum thermal compression and high power handling
- Automotive grade ProConnect connection terminal allows the use of conventional speaker cables or a fast, secure and fail-safe connection via optionally available WireKits
- Powerful magnet system for highest efficiency and extremely low distortion
- Designed for optionally available, car-specific WireKits which allow a non-destructive integration
- Made in Germany
Technical specifications
| Power handling RMS / M ax. | 120 / 180 Watts |
|---|---|
| Impedance | 3 Ω |
| DC resistance | 2.9 Ω |
| Frequency response | 70 Hz – 4,000 Hz |
| Resonance frequency | 73 Hz |
| Mechanical Q factor | 2.38 |
| Electrical Q factor | 0.50 |
| Total Q factor | 0.41 |
| Compliance | 420 µm/N |
| Equivalent air volume | 4.3 L |
| Force factor | B*I | 5.5 Tm |
| Sensitivity | 92 dB @ 2.83 V / 1m / 88 dB @ 1W / 1m |
| Cone area | 85 cm² |
| Moving mass | 11.1 g |
| Cone material | Ultra high damping (UHD) crafted paper cone |
| Mechanical resistance | 2.15 kg/s |
| Voice coil diameter | 25 mm |
| Voice coil winding height | 12.8 mm |
| Max. linear excursion | +/- 3.4 mm |
| Outer diameter | 130 mm / 5.12" |
| Installation diameter | 116.5 mm / 4.59" |
| Installation depth | 58.5 mm / 2.31" |
| Features | ProConnect terminal |
What you are ordering
The exact HELIX model shown above, APEX catalogue SKU CI21501. 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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