Product overview
165 mm / 6.5 inch advanced midbass with 3 Ω impedance, FlexMount165 technology and unique silicon coated paper cone with phase plug
Key features
- 6.5” / 165 mm advanced midbass 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
- Integrated phase plug for improved upper midrange reproduction, reduced compression effects, and increased thermal power handling of the voice coil
- Engineered for maximum flexibility – delivers impressive depth and stunning dynamics in both 2-way and 3-way system configurations
- High-tech polymer composite basket reinforced with glass beads for enormous rigidity and minimized ringing
- Specially shaped rubber surround for high linear cone excursion
- Large 1.46” / 37 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 the optionally available car-specific FlexMount165 adaptors which allow an acoustically optimized and professional integration in the original mounting location of the vehicle
- Designed for optionally available, car-specific WireKits which allow a non-destructive integration
Technical specifications
| Power handling RMS / Max. | P / | 125 / 175 Watts |
|---|---|
| Impedance | 3 Ω |
| DC resistance | 3.1 Ω |
| Frequency response | 50 Hz – 5,000 Hz |
| Resonance frequency | 50 Hz |
| Mechanical Q factor | 2.38 |
| Electrical Q factor | 0.50 |
| Total Q factor | 0.41 |
| Compliance | 742 µm/N |
| Equivalent air volume | 17.9 L |
| Force factor | B*I | 5.2 Tm |
| Sensitivity | 92 dB @ 2.83 V / 1m / 88 dB @ 1W / 1m |
| Cone area | 131 cm² |
| Moving mass | 14.0 g |
| Cone material | Silicon coated paper cone |
| Mechanical resistance | 1.83 kg/s |
| Voice coil diameter | 37 mm |
| Voice coil winding height | 13.7 mm |
| Max. linear excursion | +/- 3.9 mm |
| Outer diameter | 165 mm / 6.5" |
| Installation diameter | 142 mm / 5.59" |
| Installation depth | 66.8 mm / 2.63" |
| Features | ProConnect terminal, / FlexMount165 |
What you are ordering
The exact HELIX model shown above, APEX catalogue SKU CI21604. 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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