Product overview
6.5 inch / 165 mm high-end midbass with 3 Ω impedance, FlexMount165 technology and novel UHD paper cone
Key features
- 6.5” / 165 mm high-end midbass which combines outstanding sound performance with versatile physical integration options
- High efficiency and 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
- 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
- Made in Germany
Technical specifications
| Power handling RMS / Max. | P / | 150 / 225 Watts |
|---|---|
| Impedance | 3 Ω |
| DC resistance | 2.9 Ω |
| Frequency response | 50 Hz – 3,500 Hz |
| Resonance frequency | 60 Hz |
| Mechanical Q factor | 3.00 |
| Electrical Q factor | 0.68 |
| Total Q factor | 0.55 |
| Compliance | 480 µm/N |
| Equivalent air volume | 11.6 L |
| Force factor | B*I | 4.8 Tm |
| Sensitivity | 92 dB @ 2.83 V / 1m / 88 dB @ 1W / 1m |
| Cone area | 131 cm² |
| Moving mass | 14.8 g |
| Cone material | Ultra high damping (UHD) crafted paper cone |
| Mechanical resistance | 1.83 kg/s |
| Voice coil diameter | 37 mm |
| Voice coil winding height | 13.4 mm |
| Max. linear excursion | +/- 3.7 mm |
| Outer diameter | 165 mm / 6.5" |
| Installation diameter | 142 mm / 5.59" |
| Installation depth | 65.8 mm / 2.59" |
| Features | ProConnect terminal, / FlexMount165 |
What you are ordering
The exact HELIX model shown above, APEX catalogue SKU CI21602. 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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