Helix S 6B – 6.5″ Mid-Woofer
£120.99
Description
HELIX S 6B
Precision Mid-Woofer for Maximum Sound Quality
The HELIX S 6B is a high-performance mid-woofer designed for clarity, accuracy, and powerful bass. Its cone is made from a basalt-fiber-paper compound, providing the ideal balance of low weight, high stiffness, and internal damping. This ensures precise, distortion-free sound reproduction across the full frequency range, even at high volumes.
Optimized System Integration
Pair the S 6B with the S 1T tweeter for complete frequency coverage. When used with an Audiotec Fischer power amplifier, the S series delivers peak performance, forming the foundation for professional-grade automotive sound systems.
Features
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6.5” / 165 mm mid-woofer with basalt-fiber-paper compound cone for lightweight rigidity and precise sound
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Specially shaped rubber surround for increased cone excursion and effective area
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Custom HELIX basket with ventilation holes for improved voice coil cooling and high power handling
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Rugged rubber magnet boot with HELIX logo
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Gold-plated terminals for secure and reliable connections
Technical data
Power RMS / max. P 100 / 200 Watts Impedance Z 4 Ω DC resistance Re 3.4 Ω Frequency response 45 Hz – 4,000 Hz Resonance frequency Fs 67 Hz Mechanical Q factor Qms 3.87 Electrical Q factor Qes 0.96 Total Q factor Qts 0.77 Compliance Cms 370 μm/N Equivalent air volume Vas 10.3 L Force factor B*I 4.8 Tm Sensitivity 1 W / 1 m SPL 90 dB Cone area Sd 141 cm² Moving mass Mms 14.8 g Cone material Basalt-fiber-paper compound Mechanical resistance Rms 1.64 kg/s Voice coil diameter ø 25 mm Voice coil winding height 12 mm Max. linear excursion Xmax +/- 3 mm Outer diameter ø 165 mm / 6.50″ Installation diameter ø 143 mm / 5.63″ Installation depth 65 mm / 2.56″ Recommended enclosure volumes Sealed box Net volume 9 L Lower limiting frequency (-3dB) 75 Hz Scope of delivery
2 x Mid-woofer HELIX S 6B
1 x Mounting material
1 x Data sheet
1 x Mounting pattern
