Helix S 6B - 6.5" Mid-Woofer


Price:
$144

Description

Elegant designed mid-woofer trimmed for maximum sound quality.
The extremely rigid cone consists of a novel basalt-fiber-paper compound – the perfect combination to guarantee clear and straight sound even at high volume levels. Beside a powerful bass reproduction and peerlessly neutral mids, the S 6B impresses with exceptionally low distortion.

A dream team is the combination with the S 1T tweeter that ideally complements the frequency range. Together with an Audiotec Fischer power amplifier, the S loudspeakers strike up to top form and provide the perfect basis for absolute top sound systems!

  • 6.5” / 165 mm mid-woofer with novel basalt-fiber-paper compound cone – a perfect combination of lowest weight, high stiffness and inner damping
  • Specially shaped rubber surround for larger effective cone area and increased maximum excursion
  • Individual HELIX basket with additional ventilation holes for better voice coil cooling and high power handling
  • Rugged rubber magnet boot with HELIX-logo
  • Gold-plated terminals
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
Efficiency 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

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