Description
Helix Ci5 W165FM-S3
6.5″ midbass drivers
Features
- 6.5” / 165 mm advanced midbass with exceptional sound performance and versatile physical integration options
- High efficiency and 3 Ohms technology for maximised 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 minimised 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
- Powerful magnet system for highest efficiency and extremely low distortion
Technical data
| Power handling RMS / Max. | P |
125 / 175 Watts |
| Impedance | Z | 3 Ω |
| DC resistance | Re | 3.1 Ω |
| Frequency response | 50 Hz – 5,000 Hz | |
| Resonance frequency | Fs | 50 Hz |
| Mechanical Q factor | Qms | 2.38 |
| Electrical Q factor | Qes | 0.50 |
| Total Q factor | Qts | 0.41 |
| Compliance | Cms | 742 µm/N |
| Equivalent air volume | Vas | 17.9 L |
| Force factor | B*I | 5.2 Tm |
| Sensitivity | SPL | 92 dB @ 2.83 V / 1m 88 dB @ 1W / 1m |
| Cone area | Sd | 131 cm² |
| Moving mass | Mms | 14.0 g |
| Cone material | Silicon coated paper cone | |
| Mechanical resistance | Rms | 1.83 kg/s |
| Voice coil diameter | ø | 37 mm |
| Voice coil winding height | 13.7 mm | |
| Max. linear excursion | Xmax | +/- 3.9 mm |
| Outer diameter | ø | 165 mm / 6.5″ |
| Installation diameter | ø | 142 mm / 5.59″ |
| Installation depth | 66.8 mm / 2.63″ |
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