Helix SPXL 12 SPL Subwoofer

SPXL 12

12" / 300 mm high end SPL subwoofer with aluminum diecast basket and Kevlar / paper sandwich cone, optimized for use in vented enclosures

The most powerful subwoofer that HELIX has ever made. This deep bass giant is able to convert up to 3000 watts of amp power into amazing sound, even at the lowest frequencies without any compression. It’s no wonder, because its extremely long-excursion driver system can move incredible volumes of air. It’s exactly the same as for cars: there’s absolutely nothing that can replace cubic capacity.

Yet for all this sound power, the SPXL 12 is also the master of exceptionally fine dynamics, able to delight the most audiophile listener. This outstanding talent finds its ideal sparring partner in the HELIX SPXL 1000, which rises to the challenge of providing the power needed to drive the system with ease.

  • Concave PP dustcap with embossed HELIX logo
  • Extremely stable Kevlar / paper sandwich cone
  • Machined aluminium mounting ring for fixing the rubber surround
  • Huge 100 mm flat wire voice coil with incredible 57.5 mm winding height on black aluminium former
  • Rugged butyl magnet cover with HELIX lettering for perfect magnet protection
  • Long-excursion rubber surround with double stitching for highest mechanical rating
  • Torsion-free aluminum diecast basket with diamond cut
  • Double nomex spider avoids non-linearities of the cone suspension
  • Massive triple magnet system 3 x 3 x 100 oz (8,505 g) with chrome-plated machined pole plates
  • Magnet size: Ø 220 x 75 mm
Power handling RMS / Max 1500 / 3000 Watts
Impedance 2 x 2 Ohms
Voice coil diameter 100 mm
Voice coil winding height 57.5 mm
Max. linear excursion +/- 23 mm
Cone area 520 cm²
Moving mass 241 g
DC resistance 2 x 1.6 Ohms
Resonance frequency 31 Hz
Mechanical Q factor 2.92
Electrical Q factor 0.57
Total Q factor 0.47
Equivalent air volume 38 L
Voice coil inductance 1.97 mH
Force factor 18.5 Tm
Efficiency 1 W / 1 m 85 dB
Outer diameter 322 mm / 12.68“
Cutout diameter 287 mm / 11.30“
Mounting depth 209 mm / 8.23“
   
Recommended enclosure  
Sealed box  
Sealed net volume 45 L
   
Ported box  
Vented net volume 70 L
Port diameter 10 cm
Port area: 80 cm²
Port length 35 cm
Port tuning frequency 32 Hz
Speakers & Subs
  • Subwoofers
Subwoofer
  • 12" (30cm)

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Helix SPXL 12 SPL Subwoofer

  • Brands Helix
  • Product Code: SPXL12
  • Availability: Available
  • £599.99